Good afternoon, and welcome to Diodes Incorporated Third Quarter 2019 Financial Results Conference Call. At this time, all participants are in a listen-only mode. At the conclusion of today's conference call, instructions will be given for the question and answer session. If anyone needs assistance at any time during the conference call, please press the star key followed by the zero on your touch-tone phone. As a reminder, this conference call is being recorded today, Monday, November fourth, 2019. I would now like to turn the call over to Leanne Sievers of Shelton Group Investor Relations. Leanne, please go ahead.
Good afternoon, and welcome to Diodes Third Quarter 2019 Financial Results Conference Call. I'm Leanne Sievers, President of Shelton Group, Diodes investor relations firm. Joining us today from Taiwan are Diodes President and CEO, Dr. Keh-Shew Lu, Chief Financial Officer, Brett Whitmire, Vice President of Worldwide Sales and Marketing, Emily Yang, and Director of Investor Relations, Laura Murrell. Before I turn the call over to Dr. Lu, I'd like to remind our listeners that the results announced today are preliminary, as they are subject to the company finalizing the closing procedures and customary quarterly review by the company's independent registered public accounting firm. As such, these results are unaudited and subject to revision until the company files its Form 10-Q for its third quarter 2019.
In addition, management's prepared remarks contain forward-looking statements, which are subject to risks and uncertainties, and management may make additional forward-looking statements in response to your questions. Therefore, the company claims the protection of the safe harbor for forward-looking statements that is contained in the Private Securities Litigation Reform Act of 1995. Actual results may differ from those discussed today, and therefore we refer you to a more detailed discussion of the risks and uncertainties in the company's filings with the Securities and Exchange Commission, including Forms 10-K and 10-Q. In addition, any projections as to the company's future performance represent management's estimates as of today, November 4th, 2019. Diodes assumes no obligation to update these projections in the future as market conditions may or may not change, except to the extent required by applicable law.
Additionally, the company's press release and management statements during this conference call will include discussions of certain measures in financial information in GAAP and non-GAAP terms. Included in the company's press release are definitions and reconciliations of GAAP to non-GAAP items, which provide additional details. Throughout the company's press release and management statements during this conference call, we refer to net income attributable to common stockholders as GAAP net income. For those of you unable to listen to the entire call at this time, a recording will be available via webcast for 90 days in the investor relations section of Diodes' website at www.diodes.com. Now, I'll turn the call over to Diodes' President and CEO, Dr. Keh-Shew Lu. Dr. Lu, please go ahead.
Thank you, Leanne. Welcome everyone, and thank you for joining us today. Diodes achieved another quarter of record financials, resulting increased profitability and cash flow from operation. Our nine-month revenue grew 5.4% over the same period last year, while earning increased over 30%. This growth is especially notable at the time during which our served market was down more than 6.5%. EBITDA also set a new quarterly record and represent the second consecutive quarter to exceed a $300 million annual run rate as it approached 25% of total revenue. Gross margin remained above 37% of revenue as product mix continues to benefit from record revenue in the automotive end market, which remained at 10% of total revenue, as well as our Pericom brand IC product.
I would also like to take this time to provide an update on our proposed acquisition of Lite-On Semiconductor. As recently announced, Lite-On Semiconductor shareholders approved the proposed acquisition at a special meeting of shareholders on October 25th. Diodes has also made a necessary regular filing in the U.S., Taiwan, and China. In China especially, we are awaiting feedback from the government and at this time are not aware of any issues that would delay the closing past the expected date in April 2020. To conclude, I'm very pleased with our year-to-date performance as we carefully navigate the seasonal softness and the inventory adjustment that are typical of our industry as we approach year-end.
Long-term, I believe Diodes remain well-positioned to continue delivering constant profitability growth with an ongoing content gains in high-growth areas such as connected car, high-end servers and storage, 5G, as well as IoT. With that, let me now turn the call over to Brett to discuss our third quarter financial results and our fourth quarter 2019 guidance in more detail.
Thanks, Dr. Lu, and good afternoon, everyone. As part of my financial review today, I will focus my comments on the sequential change for each of the line items and would refer you to our press release for a more detailed review of our results, as well as the year-over-year comparisons. Revenue for the third quarter 2019 was a record $323.7 million, compared to $322 million in the second quarter of 2019. Gross profit for the third quarter remained a record $122 million, or 37.7% of revenue, compared to the prior quarter of $122 million, or 37.9% of revenue. GAAP operating expenses for the third quarter 2019 were $73.3 million, or 22.7% of revenue, and $68.8 million, or 21.3% of revenue on a non-GAAP basis, which excluded $4.5 million of amortization of acquisition-related intangible asset expenses.
This compares with GAAP operating expenses in the second quarter 2019 of $73.5 million, or 22.8% of revenue, and $69 million, or 21.4% of revenue on a non-GAAP basis. Total other income amounted to approximately $20,000 for the quarter, including $2.6 million of other income, $272,000 of interest income, largely offset by $2 million of interest expense, and $822,000 of foreign currency losses. Income before taxes and non-controlling interests in the third quarter 2019 was a record $48.7 million, compared to $47.9 million in the previous quarter. Turning to income taxes, our effective income tax rate for the third quarter was approximately 21.8%. GAAP net income for the third quarter 2019 was a record $38.1 million, or $0.73 per diluted share, compared to net income of $36.3 million, or $0.70 per diluted share in the second quarter of 2019.
The share count used to compute GAAP diluted EPS for the third quarter of 2019 was 51.9 million shares. non-GAAP adjusted net income in the third quarter was a record $41.9 million, or $0.81 per diluted share, which excluded net of tax $3.7 million of non-cash acquisition related intangible asset amortization costs. This compares to non-GAAP adjusted net income of $40 million, or $0.77 per diluted share in the second quarter of 2019. EBITDA for the third quarter was a record $78.3 million, or 24.2% of revenue, compared to $77.1 million, or 23.9% of revenue in the prior quarter. We have included in our earnings release a reconciliation of GAAP net income to non-GAAP adjusted net income and GAAP net income to EBITDA, which provides additional details. Cash flow generated from operations was $67.2 million for the third quarter 2019.
Free cash flow was $41.8 million, which included $25.4 million for capital expenditures. Net cash flow in the third quarter was a negative $17.1 million, which includes a paydown of $52.6 million of long-term debt. Turning to the balance sheet. At the end of the third quarter, cash and cash equivalents plus short-term investments totaled approximately $226 million. Working capital was $465 million, and long-term debt, including the current portion, was $119 million. In terms of inventory, at the end of the third quarter, total inventory days increased to 104 in the quarter, compared to 100 last quarter. Total inventory dollars amounted to approximately $230.8 million, which reflects a $5 million increase in raw materials, $2.8 million increase in finished goods, and $100,000 increase in work in process. Finished good inventory days was 27 in the quarter, compared to 26 in the second quarter 2019.
Capital expenditures on a cash basis for the third quarter 2019 were $25.4 million, or 7.9% of revenue, and within our target model of 5%-9% of revenue. Turning to our outlook. For the fourth quarter, we expect revenue to be approximately $300 million, ±2%, which at the midpoint represents an annual growth of 2.8% even in the overall weak market environment and continued outperformance of our served market. We expect GAAP gross margin to be 36.5%, ±1%. Non-GAAP operating expenses, which are GAAP operating expenses adjusted for amortization of acquisition-related intangible assets, are expected to be approximately 22% of revenue, ±1%. We expect net interest expense to be approximately $2 million.
Our income tax rate is expected to be 21% ±3%, and shares used to calculate diluted EPS for the fourth quarter are anticipated to be approximately 52.5 million. Please note that purchase accounting adjustments of $3.7 million after tax for Pericom and previous acquisitions are not included in these non-GAAP estimates. With that said, I will now turn the call over to Emily Yang.
Thank you, Brett. Good afternoon. Looking more closely at third quarter revenue, POS revenue was up, driven by strong demand in Asia. Distributor inventory in terms of weeks was down in the quarter and within our normal range of 11-14 weeks, which is where we expect it to remain near-term. Global sales for the third quarter, Asia represented 74% of revenue, Europe 17%, North America 9%. In terms of our end markets, industrial was once again our largest representative end market at 28% of revenue, consumer 24%, communication 22%, computing 16%, automotive 10% of revenue. Let me review the end markets in greater details. Starting with our automotive market, revenue reached another record as we continue to gain increasing traction and content in this key focus area for Diodes.
We also expanded our product portfolio by introducing exciting new products from multiple product lines, including MOSFETs, crystals, LED drivers, TVS, Zener diodes, protection products, bipolar junction transistors, SBR, and sensors. Diodes also recently released our XRQ family of crystal qualified to AEC-Q200 grade 1 requirements, targeting auto applications that demand frequency accuracy under harsh environments. Additionally, Diodes' leading PCI Express 4.0 solution and USB Type-C solutions for signal muxing and signal integrity continue to see growth in emerging automotive applications like instrument cluster, infotainment, and assisted driving information. In fact, PCI Express has become the interface of choice for the backbone transmission of engine control units, ADAS, navigation, telematic, and infotainment systems. Diodes is well-positioned to address this need with a variety of products designed to support the PCI Express protocol.
Diodes is the only supplier to offer PCI Express 4.0 clock generators and clock buffers with AEC-Q grade 2 105 degrees Celsius ambient temperature support. Also in the automotive market, we continue to see success with our proprietary SBR technology as well as MOSFET design wins. These products are suitable for a wide range of applications in connected driving, ADAS, telematics, and infotainment, powertrain covering conventional hybrid and electric vehicles, and battery management system. In addition, we saw new design wins for our gate driver ICs for in-car charging system for portable equipment such as phones and tablets. We also saw growth in our TVS product in cameras and ADAS system and for our multi-chip array products using engine diagnostic test systems. Diodes also have multiple design wins and revenue growth from our newly introduced LED driver in rear lights and air filter applications.
In our largest representative end market of industrial, our momentum continued with new design win activities across many applications such as metering, DC fans, power tools, and power supply, as well as home appliances, including e-lock applications. Our glass passivation process rectifier and bridge rectifier product experienced strong growth in applications including pumps, mixers, aeration system, and measurement system. In the third quarter, revenue increased for our linear mode discrete LED drivers in various commercial and industrial lighting applications. Bipolar transistors also continue to be in demand for industrial applications where they are often used for voltage regulation and driving the gates of power devices such as MOSFET and IGBT. Additionally, we continue to expand our market position in industrial PC by expanding design activities with our low-power PCI Express 2.0 packet switch. Our product's low-power performance gives Diodes a leading position in the small link count port expansion applications.
We are also seeing USB Type-C adoption into medical equipment with our HDMI over the Type-C crossbar switch designed in for transporting video image to monitor over a USB Type-C interface. Diodes also introduced during the quarter our universal high-speed crossbar switch that supports the latest protocols such as PCI Express 4.0, Thunderbolt 3, SuperSpeed USB 20 gigabit per second, and 10GBASE-KR. It provides an almost universal solution to routing high-speed signals up to 20 gigabit per second. Further, with the rapid adoption of high-speed interfaces across multiple end applications in the IoT industry, ESD protection is becoming more and more important for such data links. Multiple design wins in the third quarter confirmed Diodes' leading position in ESD protection devices. Turning to consumer, this market continues to be a strong area for Diodes' SBR Schottky and GPP rectifier, growing both sequentially and year-over-year.
We saw increased momentum for new applications like smart speakers, wireless chargers, gaming PC power, white goods, protection circuit modules for reverse polarity protection, and IP phone market. Low leakage CSP products are increasingly used in the battery pack for portable devices to boost battery life. Also in the quarter, Diodes' protection products continued to gain traction in various panel applications such as mobile panels, TV panels, monitor panels, and notebook panels. In the communication market, as reported last quarter, we continued to see design win expansion of our products in the 5G applications like CPE, small cell, base station, baseband units, and remote radio units for higher speed, increased bandwidth, and improved power density. We also saw additional design wins in 5G applications for discrete power management, clocks, and connectivity products, including USB redrivers and switches.
Power density is one of the key concerns for 5G smartphones, and Diodes has been actively engaging this market with our comprehensive small footprint DFN and CSP MOSFET portfolio. Also in the communication market, we continue to see revenue growth from mobile handset applications for our products like tight tolerance Zener diodes, high voltage fast-switching diodes, low leakage signal diodes, and fast recovering GPP rectifier. In addition, our protection products continue to be our key growth area, driven by USB Type-C adoption in mobile phone applications. Lastly, in the computing market, revenue grew in notebook PC applications for our TVS products, high current LDOs, tight tolerance Zener diodes, rectifiers, and small signal fast-switching diodes. Our signal integrity solutions continue to maintain a leadership position as they are well recognized by CPU partners.
With the adoption of USB Type-C in notebook and PC applications, we are seeing this area as the next big growth engine for protection and connectivity products from our Pericom product line. Speaking of our Pericom IC product line, as Dr. Lu mentioned in his comment, we once again achieved another quarter of record revenue from these products, which is a testament to Diodes' ability to leverage our global sales channel and cross-selling opportunities we have been able to achieve across our customer base. We also achieved strong revenue growth for load switches in PC and mobile applications, combined with increasing design wins for our high breakdown voltage product for our applications such as Power over Ethernet, server power, and data center.
In summary, our achievements of record results in the third quarter is a further testament to Diodes' consistent execution and the increasing benefit from our total solution sales approach and content expansion at key customers. Further, as indicated by our fourth quarter guidance, we expect full year revenue to grow 2.8% over 2018, which is further evidence of our continuous outperformance of our served markets. We look forward to the additional opportunities afforded by the proposed acquisition of Lite-On Semiconductor in terms of broadened product offering as well as wafer and packaging capacity to further support our future growth. With that, we are now open the floor to questions. Operator?
Thank you. To ask a question, you'll need to press star one on your telephone. To withdraw your question, press the pound key. Please stand by while we compile the Q&A roster. Our first question comes from Gary Mobley with Wells Fargo Securities. Your line is now open.
Hey, everyone. Thanks for taking my question. Wanted to start asking about the gross margin assumption for the fourth quarter with gross margin expected to decrease about 120 basis points quarter-over-quarter. I'm curious to know how much of that is underutilization of manufacturing versus pricing on a like-for-like basis for products.
Well, Gary, majority actually is coming from underutilizations. Right now, our model is 95% for AT, and we probably go down another 5% for utilization or for AP, and probably 5%-10% for wafer. Okay. Our ASP actually is quite stable. You remember we using the model as 1.5%-2% per quarter. ASP 1.5%-2% down per quarter. That's our models. We are looking at probably about the same kind of the rate. Basically, the reason, from ASP point of view, can be within the model, is really for commodity is down more. If I look at the automotive and telecom IC, in some quarter, they all have the record from automotive and from telecom ICs, and those is the high GP products.
We expect that kind of product area will continue, and therefore, commodity or deep commodity, yes, go down, but the higher GP product will going up. Therefore, our ASP is within the model.
Okay. As a follow-up question, I wanted to ask about seasonality for the first quarter. Typically, in the first calendar of any calendar and fiscal year, you see somewhere in the neighborhood of a 3% sequential revenue decline. Given what you know today about timing of Chinese New Year and maybe demand trends or whatnot, how would you call the seasonal trends in the first quarter relative to revenue? Then with respect to OpEx, one would think that you would show an increase in OpEx sequentially in the first quarter because of payroll taxes and whatnot, in recent years, you've basically trended flat in the first quarter on a sequential basis. How would you call the OpEx change as we look into Q1, Brett?
Okay, Gary. From seasonality point of view, our 1Q typically is 5%. Okay? We will expect this year similar to that kind of drop, but we are not sure yet. From the market point of view, what we can see, probably similar to that kind of drop. It's about 5%. Okay? From the operational cost point of view, actually, it going to be more coming from underloading cost, okay? Not from the That's the GP, okay? From the salary operational cost, salary, yes. We have two cost up point. One is in July, which is more for the indirect employee, like our engineer and our managers. That typically is up in the 1st of July. For the operator or operation point of view, manufacturing, it's in January or right within the Chinese New Year. They will be in 1Q.
Yes, that one operation will be down. Operation cost will be up slightly.
All right. Thank you for that.
Thank you. As a reminder, to ask a question, you will need to press star one on your telephone. Our next question comes from Shawn Harrison with Longbow Research. Your line is now open.
Hi, everybody, congratulations on the strong results.
Yeah. Thank you, Shawn.
If you look at the guidance in terms of the sequential change for the December quarter, are there any end market verticals that you would anticipate to perform better or worse, than the implied sequential decline?
Well, I still believe our telecom, IC, and our automotive is still going to be performed quite strong. Okay? We target 10% this year. So far we continue in 10%. We even have the record in third quarters. I still expect we'll continue very strong. I don't see a reason or a trend to going weaker in automotive and the power conversion.
Right. Let me just add a little bit more. Overall, automotive market is definitely not growing, and it's actually quite slow. Majority of the growth coming from Diodes is really coming from the content expansion that we've been really focusing on. Again, overall market is definitely not growing, it's definitely not that positive, but overall, our result has been pretty positive, really driven by the focus we've been focusing on for the last few years.
I guess the takeaway would be the underperforming areas would be within consumer electronics, communications, and PCs, just seasonality plus, maybe a little weaker market trends. Not trying to put words in your mouth.
Okay. Sorry, I assume you're talking about the Q4 revenue guidance?
Correct.
Okay.
What would be maybe the weaker end markets?
Right. I think overall lower revenue guidance is mainly driven by more than usual our year-end inventory adjustment, especially in Europe and North America. If you look at our overall business in Q3, our POS is actually up, our channel inventory is down. We actually performed better than our served market. Even with our Q4 guidance, our whole year estimate will still grow about 2.8%, which is still much stronger than our peers. I think overall, if you look at the business, we are very confident that we are actually in good shape.
Yeah, it's very helpful. Part as a follow-up, tax rate has continued to decline here, which is nice to see. As we look out over the next 12-18 months, how much further can that decline?
Well, I would expect to continue to see some improvement there. It's hard to say exactly what that is, but we're guiding into fourth quarter to continue that momentum down, and I would expect to continue to see momentum as we go into 2020. We've been working toward a model, and we haven't gotten full entitlement of that yet.
Okay, then last, if I may, just is China the big regulatory approval here that is the one that you need to see get cleared to get the deal closed in April, or is there something else I'm missing?
At China, antitrust is the key item for us to be able to consolidate LSC. We don't see they're going to turn it down. It might just the timing. We will believe they will approve it. That just may not be the time we expect. That is the key.
That's what we understand from our attorneys that are handling this for us. We basically addressed everything that's been asked. We provided all the information. It's just a matter of timing, working through their process, and we're just trying to keep everybody updated on that.
And we-
Thank you very much.
We applied per the requirement. We do take all the action applied per all the government requirement.
That's right.
Okay. Thank you.
Thank you. I'm not showing any further questions at this time. I would now like to turn the call back over to Dr. Keh- Shew Lu for any further remarks.
Thank you for your participation on today's call. Operator, you may now disconnect.
Ladies and gentlemen, this concludes today's conference call. Thank you for participating. You may now disconnect.