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Silicon Laboratories Inc (SLAB 2.17%)
Q3Â 2018 Earnings Conference Call
Oct. 24, 2018, 8:30 a.m. ET
Contents:
- Prepared Remarks
- Questions and Answers
- Call Participants
Prepared Remarks:
Operator
Good morning. My name is Mariama, and I will be your conference operator today. At this time, I'd like to welcome everyone to Silicon Labs Third Quarter Fiscal 2018 Earnings Conference Call. After the speakers' remarks, there will be a question-and-answer session. All lines have been placed on mute to prevent any background noise. (Operator Instructions) Thank you.
I would now like to turn the call over to Jalene Hoover, Director of Investor Relations and International Finance. Jalene, please go ahead.
Jalene Hoover -- Director of Investor Relations and International Finance
Thank you, Mariama and good morning, everyone. Tyson Tuttle, Chief Executive Officer and John Hollister, Chief Financial Officer are on today's call. We will discuss our financial performance and review our business activities for the third quarter. After our prepared comments, we will take questions. Our earnings press release and the accompanying financial tables are available in the Investor Relations section of our website at www.silabs.com. This call is also being webcast and a replay will be available for four weeks.
Our comments today will include forward-looking statements subject to risks and uncertainties. We base these forward-looking statements on information available to us as of the date of this conference call and assume no obligation to update these statements in the future. We encourage you to review our SEC filings, which include and identify important risk factors that could cause actual results to differ materially from those contained in any forward-looking statements.
Additionally, during our call today, we will refer to certain non-GAAP financial information. A reconciliation of our GAAP to non-GAAP results is included in the Company's earnings press release and also in the Investor Relations section of Silicon Labs website.
I would now like to turn the call over to Silicon Labs' Chief Financial Officer, John Hollister.
John Hollister -- Chief Financial Officer
Thanks, Jalene. I'm pleased to report that we achieved record revenue of $230 million in the third quarter, up 16% year-on-year and just above the high-end of our guidance range. Our IoT products generated a new all-time record of $125 million for the quarter or 25% growth year-on-year. In Q3, we saw year-on-year increases in all major IoT product lines, including 8-bit and 32-bit MCUs, Bluetooth, 15.4 Wireless, Proprietary Wireless and Sensors. We also shift our first full quarter of Z-Wave products.
We continue to see solid growth in the smart home and broad industrial market segments. Smart metering delivered sequential growth in Q3, although, it is still down year-on-year. Our infrastructure products delivered another record quarter with third quarter revenue ending at $53 million, representing year-on-year growth of 35%. Isolation achieved record design wins and established record revenue with strength in automotive and industrial end markets. Timing declined slightly in the quarter with growth in 100-gig, offset by declines in 10-gig optical transport markets.
As expected, broadcast increased sequentially in quarter to $36 million with both consumer and automotive up. However, auto was down year-on-year due to softness in Europe resulting from production delays related to new emission standards. Year-on-year, Broadcast was down 16%.
Access surpassed expectations in Q3 increasing sequentially to $16 million on strength in SLICs and Power over Ethernet products. Year-on-year, access was down 4%. Third quarter distribution revenue was 72% of total sales. Our top 10 customers represented less than 20% of total year-to-date revenue with no customer greater than 5% of our revenue.
Looking at revenue by end market, industrial was up in Q3, driven by growth in IoT. Our participation in the industrial end market now represents just over half of our revenue. We also saw overall sequential growth in automotive from broadcast isolation and 8-bit MCUs. The communications end market also increased on timing, 8-bit MCUs and Power over Ethernet products.
And finally, consumer was up for the quarter led by a seasonal peak in broadcast TV tuner revenue. Looking at geography, revenue was up in APAC and the Americas in the quarter. Sales into Europe were down.
Third quarter non-GAAP gross margins were slightly higher than we expected at 60.8%, though down slightly sequentially due to product mix with broadcast consumer revenues seasonally high. Non-GAAP operating expenses ended at $87 million. Non-GAAP R&D expenses were $47 million, roughly flat to Q2 with an increase in headcount offset by lower travel and fringe. Non-GAAP SG&A expenses were $40 million, down $1 million, due to reduced travel and variable compensation offset by an increase in headcount.
Third quarter non-GAAP operating margin ended strong at 23%, which is 120 basis points higher than in Q3 2017. I'm pleased to report record non-GAAP operating profit in the third quarter, surpassing the $50 million mark for the first time and ending at $53 million.
During the third quarter, we made certain adjustments to our income tax accounting related to ongoing updates to transition tax regulations associated with the Tax Cuts and Jobs Act. We reversed a portion of the transition tax charge recorded in Q4 2017 and recorded a discrete GAAP tax benefit of $6 million. Based on the regulatory update, this transition tax item will now be recognized over a multi-year period for GAAP and tax purposes instead of being recorded as a one-time charge. Our non-GAAP tax rate increased to 15.6% for the quarter to provide for the year-to-date 2018 portion of this adjustment.
Looking forward, we estimate a steady state non-GAAP income tax rate of around 13%. Non-GAAP earnings per share ended at the high end of the guidance at $1.01, up 12% over the same period of the prior year. On a GAAP basis, third quarter gross margins were 58.9%, which reflects the impact of the $4 million fair market valuation adjustment for Z-Wave inventory recorded in Q2 and which fully turned around in Q3 consistent with our expectations.
Total Q3 GAAP operating expenses declined to $110 million with R&D expenses at $61 million and SG&A expenses at $49 million. Diluted GAAP EPS ended at $0.63 due to strong operating results combined with the aforementioned favorable GAAP tax adjustment. Stock compensation was $13 million with the amortization of intangible assets ending at $11 million both in line with expectations.
Turning now to the balance sheet. We ended the quarter with cash and investments of $608 million. Our accounts receivable balance declined to $75 million on 29 day sales outstanding and our inventory balance declined to $78 million on improved turns of about 4.9x. Year-to-date 2018 operating cash flow was $145 million with excellent cash flow realized in the third quarter. Our Board of Directors has increased our buyback authorization to $200 million and extended the term of the authorization to the end of fiscal 2019. Third quarter year-to-date, we have repurchased $24 million.
I will now cover guidance for the fourth quarter. We expect revenue to be in the range of $221 million to $227 million with IoT up and declines in Infrastructure, Broadcast and Access. By end market in Q4, we expect industrial to increase and we expect consumer, automotive and communications to decline. We expect non-GAAP gross margin to be between 60% and 60.5% and we expect non-GAAP OpEx for Q4 to be approximately $88 million. We expect our non-GAAP effective tax rate to be around 13% and we expect non-GAAP EPS to be in the range of $0.91 to $0.97.
On a GAAP basis, we expect gross margin to be approximately 60% and we expect GAAP OpEx to be around $111 million. We expect our GAAP effective tax rate to be approximately 10% and we expect GAAP EPS to be in the range of $0.39 to $0.45.
I will now turn the call over to Tyson.
Tyson Tuttle -- Chief Executive Officer
Thanks, John. We are delighted to report outstanding third quarter 2018 financial performance, including 16% year-on-year revenue growth. We saw sequential growth in all core business categories in Q3 and delivered record performance in IoT and infrastructure. We have delivered target operating model performance in top line revenue growth, non-GAAP gross margin, non-GAAP OpEx and non-GAAP operating margin for the past five quarters.
Year-to-date, our IoT products have delivered nearly 21% year-on-year growth, including more than $20 million from the acquired Z-Wave business. Industrial IoT revenue has more than doubled over the past 10 quarters, reflecting growth in target applications for key market segments including smart home, metering, lighting and industrial automation. While smart metering revenue was still down in the third quarter year-on-year, we were pleased to see some recovery in Q3 with the resumption of normal shipment volumes in the UK from the SMETS1 to SMETS2 transition expected in early 2019.
Simplicity is the key to scaling our IoT business. Our IoT opportunity funnel has grown to approximately $7 billion and our IoT design win lifetime revenue increased over 80% in Q3 year-on-year. The more we can do to make it easy to add connectivity to IoT devices, the more we accelerate IoT adoption and growth. During the quarter, we introduced new wireless express modules, enabling developers to move from product concept to prototype in a matter of hours instead of weeks. Silicon Labs Wireless Xpress provides a configuration-based development experience, with everything needed including certified Bluetooth Low Energy and Wi-Fi modules, integrated protocol stacks and easy-to-use tools. Bluetooth and Wi-Fi products based on Wireless Xpress can be remotely managed and updated using over the air native device management features. When Silicon Labs -- with Silicon Labs device management services, end users can easily install and update firmware, view real time device metrics and adjust product settings through the cloud and mobile applications. This type of product is well positioned to move through the channel and is rapidly gaining traction.
I'd like to share an example of one of the many interesting ways IoT adoption is improving lives, transforming industries and enabling smarter cities. Transportation studies show that drivers searching for parking spots have a substantial impact on urban traffic. To address this challenge during the quarter Q-Free and Silicon Labs announced an outdoor parking sensor solution designed to make it faster and easier for drivers in urban areas to locate open parking spots. Q-Free ParQSense is 99% accurate and determining whether a vehicle is taking up a parking space. The application transmits data to centralized base stations over long distances using Silicon Labs Wonder Gecko wireless MCU.
On the product development front, we're pleased with the progress of our first generation EFR32 Wireless Gecko IoT platform in 90 nanometer process technology, which consists of a portfolio of multi protocol and Multiband SoCs, modules, stacks and tools. We are seeing broad adoption of this platform across smart metering, smart home and industrial market segments addressing ZigBee, Thread, Bluetooth and proprietary protocols and we are now migrating Z-Wave under our first generation hardware.
Our focus and investment in software and security for the IoT continues to increase. We are very excited about our new second generation Wireless Gecko IoT platform in 40 nanometer process technology, which will deliver significantly lower power, improved range, superior multi protocol capabilities and advanced security based on an ARM Cortex-M33 core with TrustZone and embedded secure element technology. We are sampling the first product from our second generation platform now and have already secured several Tier 1 designings for residential and commercial connected lighting applications. While the lighting market has underperformed in 2018, we are well positioned for anticipated growth in 2019 and beyond. We expect to be in full production with our second generation platform next year and welcome the opportunity to continue to build out the portfolio and drive leadership, and connectivity, and security for the broad IoT market.
Moving on to infrastructure. Infrastructure has delivered especially strong performance this year with Q3 year-to-date growth of more than 35%. Our timing business has traditionally been strongest in the core optical networking market. This year we have seen strength in growing diversity in our customer base into industrial, data center and wireless infrastructure applications, which now represent almost 40% of timing revenue.
We continue to invest in these key growth products. During the quarter, we enhanced our any-frequency clock portfolio, which combines a clock IC and quartz crystal reference inside the same package, simplifying board layout and design, guaranteeing reliable start-up and operation over the lifetime of end products. Data center is the primary market for this new device and longer term we expected ease of use will drive adoption in other applications. As further evidence of our progress in the wireless infrastructure market, during the quarter, we secured key design wins in wireless timing applications with multiple Tier 1 communications customers in China. We are excited about the growing diversity of our timing portfolio, including opportunities in 4.5 and 5G wireless.
Our isolation portfolio represents a broad-based channel friendly set of products, which has grown to approximately 40% of infrastructure revenue. Our CMOS-based digital isolation solutions continue to replace traditional Optocouplers, offering longer lifetimes, significantly better stability over temperature and aging, faster switching and much higher noise immunity for designs requiring protection from high voltages. In Q3, isolation achieved record revenue and design win activity with strength across a broad range of applications including power supplies, solar, industrial and automotive.
We continue to gain traction in the automotive end market where we are the #1 supplier of digital isolation technology for electric and hybrid electric vehicles. During the quarter, we secured several significant design wins with a large European OEM, which we expect to drive revenue beginning in late 2019. We are further encouraged by longer term macro trends around the demand for electric vehicles. In fact, the International Energy Agency forecasts the number of electric vehicles on the road will grow to 125 million by 2030. And this presents a large opportunity for Silicon Labs. We offer an ideal solution and have captured leading market share where we are selling approximately $10 to $50 of isolation content per vehicle today.
Broadcast increased more than 5% sequentially with seasonally high consumer revenue and sequential growth in automotive. During the quarter, we secured a major automotive OEM design win with a multiyear lifetime revenue opportunity of approximately $100 million and expect to begin shipping in 2021. This win underscores the technical superiority and flexibility of our broadcast automotive portfolio and the growing penetration we are enjoying in the market. In broadcast consumer, this month we reached a tremendous milestone with 1 billion cumulative units of TV tuner shipped into the global flat panel TV and terrestrial set-top box markets since 2010 and where our share now exceed 70%. This accomplishment is a testament to the RF CMOS based tuner technology we developed and optimized over six generations of designs. We solved technical challenges which many other companies have tried and failed to deliver, ultimately replacing more than a 100 external components with a single 3x3 millimeter tuner IC.
Our TV tuner serve is a great example of what we can achieve when we focus and work together to drive cycles of learning and optimization. Our world class engineering team has made this possible through groundbreaking RF design in IT. Our operations teams continue to drive manufacturing efficiencies and our sales and marketing teams engage customers and keep winning sockets.
In conclusion, despite near term turbulence in macro and regulatory environments as well as end markets, we are keeping our eyes focused on the long term and are bullish about our ability to outperform the market. More than 80% of our products target long term diverse growth markets including IoT, communications, infrastructure, industrial applications, electric vehicles and automotive infotainment. Our opportunity pipeline is approaching $10 billion and we are focused on executing on our exciting product roadmaps and converting a rich pipeline of opportunities into wins.
Jalene, I'd like to turn the call back to you.
Jalene Hoover -- Director of Investor Relations and International Finance
Thank you, Tyson. Before we open the call for the question-and-answer session, I would like to announce our participation in Barclays Global Technology Media and Telecommunications Conference in San Francisco on December 5. We would now like to open the call up for your question. To accommodate as many people as possible before the market opens, we ask that you please limit your questions to one with one follow up.
Questions and Answers:
Operator
(Operator Instructions) Your first question comes from the line of Cody Acree with Loop Capital. Your line is open.
Cody Acree -- Loop Capital Markets -- Analyst
Good morning, guys. Thanks for taking my questions and congratulations on the progress. Tyson, you alluded to this maybe in the last sentence or so of your comments, but I assume you were able to take a look at TI's comments from last night about a broad slowing of demand, semi demand across most major markets. I guess, I'd like to get your comments, your thoughts on that? And maybe what's -- what drivers you are seeing? And then maybe as a follow up just, what are the plans if this is a period of slowdown in the markets, what is the plan to come out the other side better positioned? Thank you.
Tyson Tuttle -- Chief Executive Officer
Yes, thank you, Cody for the question. If we look -- I'm going to talk a little bit about IoT and I'll let John talk a little bit about the broadcast and infrastructure areas. We saw -- we are seeing growth in wireless, we're seeing IoT going to be up in Q4 and that's really driven by the growth we're seeing in Wireless with Z-Wave proprietary and Wi-Fi in particular having strength and really coming off of record design win quarter in Q3. So we see the traction on IoT heading into 2019. We do see some as we enter into Q4, the macro impacting a little bit of our 8-bit business in China. The 8-bit business is quite broad with a wide range of applications and is a good indicator of some slowdown in the communications and also the industrial area there in China. So we are seeing that. And then if you look at our other businesses in Infrastructure, and Broadcast, and Access, all of those will be down somewhat. I'll let John comment a little bit on that.
John Hollister -- Chief Financial Officer
Yes, Cody. So looking further at the Infrastructure business, we had strength in industrial on the first half and we also had some strength in China in some of the 10-gig business in China that in particular is down as we expect it to be in Q4 with relatively flat performance on the industrial side for timing. We also see a bit of macro weakness on the isolation side where -- and that's also an area where we've had just a long string of quarterly increases in the business. So that is settling back some. So overall, we're guiding infrastructure down. Looking further at broadcasts, consumer is seasonally high in the third quarter, which is not surprisingly forecasted to be down in Q4. And as I mentioned in my prepared comments, the automotive part of broadcast business is down really around some of the regulatory issues in Europe affecting the emissions, standards and production being impacted by adoption of that.
Operator
Your next question comes from Gary Mobley with Benchmark. Your line is open.
Gary Mobley -- Benchmark -- Analyst
Good morning, everyone. Thanks for taking my question. Want to ask about your long term gross margin outlook, I know you're going to shy away from giving any sort of commentary with respect to fiscal year 2019, but your long term target is 58% to 60%. You've been consistently running above that throughout all of 2018. And so all mix issues considered, how do you feel about the gross margin staying above the 60% level at least for the foreseeable future for fiscal year 2019?
Tyson Tuttle -- Chief Executive Officer
Yes, Gary. This is Tyson. In terms of the long term gross margin, if you look at the last few quarters we have been above our target range of 58% to 60%. And that's driven by a few things, one, our infrastructure business does tend to be at a higher gross margin than the corporate average and with the strength that we've seen there 35% year-on-year growth in Q3, that has tended to push up the gross margin, I mean as well as some of the weakness that we've seen in some areas of the IoT has some of that growth, has been a little bit below, we had a little bit of softness in the lighting market. We also had this pause in the smart metering market. So the -- overall, the mix has been favorable to gross margin. But at the same time, we've been driving costs very, very aggressively. We have a culture where we sell the value of our products and really look at how we can best extract the value in the market and we continue to drive innovation. So it's our goal to maintain a premium gross margin and we're looking in Q4 at 60% to 60.5%. So we still believe that we can continue to do that. I'll let John comment a little bit as well.
John Hollister -- Chief Financial Officer
Yes, Gary, I appreciate the question. I think it's a good indicator of what our engineering and operations teams are capable of doing around optimization of our cost structure. We're holding the 58% to 60%. We've seen some positive results this year. We do continue to be in growth mode and have our eye on the greater share gains. So looking-forward, we're holding the 58% to 60% model at this point.
Tyson Tuttle -- Chief Executive Officer
Yes, I would want to add one thing which was below the target gross margin was when we decided to go into modules, the modules had some third-party content intended to be a little bit below our corporate gross margin. We have been aggressively driving cost reductions into modules and as Z-Wave has come in, Z-Wave actually shipped mostly in modules that we've been able to achieve substantial cost reductions on the module manufacturing. They are both in manufacturing and in test. And so we just continue to hammer on this and we'll provide updates as we go forward.
Gary Mobley -- Benchmark -- Analyst
Okay. This is my follow up and speaking of IoT modules, can you share with us your thoughts on how the introduction as announced the other day of LTE-M impacts to your market. Has this open up new use cases for Silicon Labs?
Tyson Tuttle -- Chief Executive Officer
This is the -- the LTE-M is an area where we currently are partnering with other providers, in this case it was with Digi International and we have a reference design with them using our microcontrollers and have a number of activities in partnership with other manufacturers on the wide area network solutions. Currently we are focused on the local area network and the personal area network, areas of IoT for our organic development and continue to monitor the wide area network. It would be doing that internally, it would be an expansion of SAM, but also we have so much opportunity on the local and personal area network spaces we've decided to focus there and to partner on the wide area network stuff for the time being.
Gary Mobley -- Benchmark -- Analyst
All right. Thank you.
Operator
Your next question comes from Tore Svanberg with Stifel. Your line is open.
Tore Svanberg -- Stifel -- Analyst
Yes. Thank you and congratulations on the record results. I'm pretty intrigued by this Wireless Xpress technology, Tyson, maybe you could elaborate a bit more how that stacks up versus what's out there in the marketplace right now from a competition perspective. And when should we start to see sort of the benefits of this technology? How it shows up in numbers, or share gains, or any other share metric we may be able to track?
Tyson Tuttle -- Chief Executive Officer
Yes. So the whole purpose of Wireless Xpress is to make it easy for customers to get to market quickly without having to write a lot of code. And we've been working on -- we've been talking about simplicity being the key to scaling IoT for a long time and it's something that is -- is actually very difficult to do. You have such a wide variety of applications and a lot of different communication standards and it's our goal to try to abstract the complexity of that as much as possible so that our customers can get to market quickly and also our support costs can scale across that broad market. And so the Wireless Xpress is a key stepping stone to getting there. We have a lot of customer activity going on around that. It's very easy for our channel partners to support and that we believe that this is especially for the long tail of customers that you're going to see in IoT is really the key to -- the key to success. We believe that we have not only a best-in-class offering in terms of our protocol stacks and terms of our hardware, and modules, and development tools, but we believe that compared to the competition there's really, really nothing out there that is comparable to the ease of use and completeness of the solution that we've been able to bring. Currently, we've got this working on Wi-Fi and Bluetooth and we intend to extend this into other protocols and other types of development within IoT to make things easier. So I think that this is one of the cornerstones of our ability to grow and scale the IoT business over time.
Operator
Your next question comes from Rajvindra Gill with Needham and Company. Your line is open.
Rajvindra S. Gill -- Needham & Company -- Analyst
Yes. Thank you and I echo my congratulations on the IoT revenue. Tyson, a question on isolation, you mentioned that isolation now of 40% of infrastructure, which is significant improvement. But you mentioned some kind of near term headwinds. Can you kind of give us more of a long term view if we go into 2019 of how you think about isolation, should we continue to expect more diverse end markets driving isolation going forward?
Tyson Tuttle -- Chief Executive Officer
Well, isolation is very broadly penetrated into the markets and very channel friendly and its grown substantially this year. We've had very strong growth in isolation both in 2017 and 2018. If you look at the growth we've had close to 50% year-on-year growth rates in isolation this Q3 (ph) and that's a good indicator of the strength there. If you look across the end markets, you got power supplies going to data centers, there is a industrial equipment, you've got solar inverter, we talk about the traction in the automotive end market. So we feel very good about our penetration. As the business gets larger it's hard to maintain that kind of level of growth and coming off of such a fast growth. We do see this that the large numbers get difficult, but we still feel very good about the isolation products and our ability to grow those -- to going into 2019 based on our designing traction.
Rajvindra S. Gill -- Needham & Company -- Analyst
And my follow up the, IoT if you take out Z-Wave of 30 million (ph) or so, the growth was about 12% year-on-year, still some deceleration from previous year, but it's starting to stabilize. You mentioned UK Smart Metering starting to see some shipments, that's been a big driver of your IoT business in the past. How do we think about that as we go into 2019? When do you expect the UK government to fully transition to this SMETS2 platform and how that will affect your business positively in 2019?
Tyson Tuttle -- Chief Executive Officer
Right. So we've seen about $20 million of Z-Wave revenue cumulative throughout the partial shipment quarter in Q2 and then followed by a full quarter in Q3. If you pull that out, our IoT growth is somewhat below, it's still double digits, but below the 20% target. That's really isolated to two primary areas. We have seen the smart lighting market we have anticipated faster growth there and we have seen some softness into smart lighting market. We do have some nice design wins and do anticipate that coming back as we move into 2019. And then you look at the Smart Metering market, is actually been down. We saw a little bit of recovery in Q3 and if you just take those two -- those two factors, those account for a bit of the -- or most of the below target model performance. There we did have 26% year-on-year growth in IoT organically last year and we're a little bit below. So 20% is a long term target, hope we do see that in 2019, we got a number of things that are coming back with the Z-Wave portfolio now full year as well as the lighting market and just the overall, design win, we are 80% up on design win dollar in Q3 over last year. So we think we've got a lot in the pipeline, we just got to focus on converting that pipeline into wins and driving revenue growth.
Rajvindra S. Gill -- Needham & Company -- Analyst
Thank you.
Operator
Your next question comes from Craig Ellis with B Riley. Your line is open.
Craig Ellis -- B. Riley FBR -- Analyst
Thanks for taking the question and Tyson, congratulations on the strong IoT growth in the TV tuner shipment milestone. My first question is a follow up on isolation, you provided in your prepared comments, an example of very robust content in the automotive end market and the design win in Europe. Is this automotive yet a material part of isolation revenues and if not, when would you expect it would -- if we get to these something that was a material part of that sub-segment?
John Hollister -- Chief Financial Officer
Yes. Craig, this is John. So given the broad diversity of the isolation business, really no single application or opportunity represent a large component of it. But if you sort of order now around the relative significance of the -- actually the power supplies and the data center application is the largest opportunity. Automotive is right up there and we do expect robust growth coming from automotive in the future as the electric vehicle phenomenon beginning to take off.
Craig Ellis -- B. Riley FBR -- Analyst
Thanks helpful. And then the follow-up is on the cash position and the increase in the share buyback authorization, a very robust cash position that get little over $600 million share buyback authorization increase is the -- is the intent to continue these buy back to something really manage dilution with first priority for cash inorganic growth or given what we're seeing in the market, has there been any changes and how you expect to deploy cash? Thanks, guys.
John Hollister -- Chief Financial Officer
Yes, Craig. This is John, again. Really no major change in the Company's overall strategy in these areas. We are pleased as we expected to have seen strong third quarter operating cash flow coming off of what was a relatively light first half. So that's good. I think, the capital deployment strategy remains intact that we will focus on share repurchases on an opportunistic basis and we also continue to be mindful of inorganic opportunities to grow the business in areas that have -- make sense strategically for the Company.
Craig Ellis -- B. Riley FBR -- Analyst
Thank you.
Operator
Your next question comes from Blayne Curtis with Barclays. Your line is open.
Blayne Curtis -- Barclays -- Analyst
Good morning. Thanks for taking my question. I'm just curious and probably a little direct impact. So Just curious the impact of tariffs on downstream products and customers and if you've accounted for any of that in your outlook? And then maybe a related point with the slowdown here. Just curious if you've seen any change in inventory levels within the channel or your end customers? Thanks.
John Hollister -- Chief Financial Officer
Yes, Blayne, this is John. So on the tariff side, there's really not a significant material direct impact of the tariffs on us, as far as our ability to ship product to customers, there's a little bit of an impact on some consumables that we intake in the Company and our operations, but it's not material. We have heard some feedback from partners in China, in particular that they are beginning to see some effect of the tariffs overall on their ability to be out in the market. So we have concerned about that and we'll continue to monitor that. As far as the inventory levels, really we see a healthy amount of distribution inventory out there right now were below 45 days, which is roughly our target for distributor inventory and really have not seen an overaccumulation of just the inventory.
Blayne Curtis -- Barclays -- Analyst
Thanks.
Operator
(Operator Instructions) Your next question comes from Suji Desilva with ROTH Capital. Your line is open.
Suji Desilva -- ROTH Capital -- Analyst
Hi, Tyson. Hi, John. Congratulations on the IoT progress here. First question is on the timing segment. the non-optical was strong this quarter in the mix. What was it a year ago and which of the segments wireless infrastructure, data centers, industrial are strongest in the non-optical timing? And where do you expect that share to go a year or two from now as expected expand further?
John Hollister -- Chief Financial Officer
Yes, Suji, this is John. So I don't have the precise data right on hand, but we've seen growth in the non-comms piece of the business year-on-year and really looking forward wireless is an area that we're particularly excited about. We have to had good design win traction in 4.5G in the third quarter and continue to work on the portfolio to address the 5G opportunity. We expect data center and comms to also contribute and look forward to greater participation in the wireless market you're going forward.
Tyson Tuttle -- Chief Executive Officer
Yes, I would add that both the traditional comms business as well as the new areas all grew into this year. So the growth -- while the growth was really driven by these other areas, the core business has also been growing during that same time. So we're very excited about the growing diversity of the timing business and getting into these other areas.
Suji Desilva -- ROTH Capital -- Analyst
Okay. It's helpful color. And then my other question is on the Wi-Fi part of IoT, I believe you came into the market with the Zentri acquisition. And I'm curious, what end markets you're seeing adoption and you said that's a strong grower for you? And have you already cost optimize the products and power optimize the products or is there a roadmap for Wi-Fi that will continue to improve that opportunity for you?
John Hollister -- Chief Financial Officer
Yes. So we did bring in Wi-Fi both with Bluegiga and with Zentri and a lot of that as the software stack that runs -- that was coming in with third party Silicon. Earlier this year, we introduced the first member of our own organically developed Wi-Fi solutions the WF200 and we have modules associated with that and we continue to build out that hardware portfolio with a roadmap of additional functionality as we work on the second generation IoT solution. And we've been able to use all of that software expertise and drive, that's really the Wi-Fi Xpress a number of components that were both our internal silicon as well as the software that we've continued to developed and particular from the Zentri acquisition with device management features, and cloud connectivity, and security and such. If you look at the applications that that's going into, it's a pretty wide variety of applications, I mean everything from cameras to just very simple buttons, voice activated sorts of devices, controls there's a lot of stuff that wants to hook directly to a Wi-Fi network and we have a very nice low power solution as well as an easy-to-use software stack to be able to enable these devices. So it's still fairly early days in our deployment of the roadmap and in terms of our revenue progression, but we are happy to see the progression in the market and to see growth coming here into Q4 in Wi-Fi.
Suji Desilva -- ROTH Capital -- Analyst
Okay. Thanks, guys.
Operator
There are no further questions at this time. I would now like to hand the call back over to Jalene Hoover.
Jalene Hoover -- Director of Investor Relations and International Finance
Thank you, Mariama and thank you all for joining us this morning. This concludes today's call.
Operator
This concludes today's conference call. You may now disconnect.
Duration: 43 minutes
Call participants:
Jalene Hoover -- Director of Investor Relations and International Finance
John Hollister -- Chief Financial Officer
Tyson Tuttle -- Chief Executive Officer
Cody Acree -- Loop Capital Markets -- Analyst
Gary Mobley -- Benchmark -- Analyst
Tore Svanberg -- Stifel -- Analyst
Rajvindra S. Gill -- Needham & Company -- Analyst
Craig Ellis -- B. Riley FBR -- Analyst
Blayne Curtis -- Barclays -- Analyst
Suji Desilva -- ROTH Capital -- Analyst
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