John Croteau
Analyst · Barclays
Thank you, Leanne. Welcome, everyone, and thank you for joining us today. I'd like to begin today's call with an overview of our first quarter results, and then we'll review our end markets and the progress we continue to make towards executing our growth strategy. Once completed, I'll turn the call over to Conrad Gagnon, our CFO, who will review our financial performance in further detail. I'll then conclude today's prepared comments by providing our guidance for the second fiscal quarter before opening the call for questions.
Revenue for the first quarter was $75 million, representing a 1% increase over the prior quarter and a 3% increase year-over-year. Non-GAAP gross margin was 44%, and non-GAAP net income was $9.7 million or $0.20 per diluted share. We finished the quarter with $92.6 million in cash equivalents and investments, no debt and an untapped credit line of $150 million. Overall, our revenue and earnings per share results were within our previously announced range of expectations.
During the quarter, our automotive sales continue to outperform. As a result of this success and as our relationship with Ford begins to mature, it has is led us to the decision to report automotive as our fourth end market moving forward. Automotive sales have proven to be a strong growth contributor and are accretive to our corporate operating margins and we will continue to manage it as such. We believe we have effectively realized full market penetration with our key customer, Ford, and we expect any further growth to be only a reflection of market shares gains by Ford. Moving forward, we expect the Ford relationship will remain a stable and rewarding one for years to come.
Taking a closer look at our revenue by market, 23% of our first quarter revenue was from Networks, 28% from Aerospace & Defense, 21% from Multimarket and 28% from Automotive, of which 26% was Ford. Now I'd like to share with you some refinements to our strategy, which I believe will help us stay laser-focused on our long-term goals of generating growth, driving margin expansion and improving our operational efficiency.
Going forward, you will hear us talk about our standard catalog products as a standout 6-plus decade leader within the high-performance RF and microwave market. In some cases, we lead the market in specific product categories. For instance, we believe we hold majority share in the RF and microwave diode market by a factor of 2 over our nearest competitor. We're also #1 in pulsed power transistors. We believe this renewed focus on our historical core strengths will allow us to better maximize near-term results from off-shelf products.
The rest of our RF product lines experienced what we believe was the bottom of the cycle during Q1, which is consistent with guidance from our peers and the industry experts. Specifically, Networks and A&D were down from last quarter due to what we believe was our customers' year-end inventory management, especially in Asia. We finished the quarter with a non-GAAP gross margin of 44%, which is at the lower end of our guidance due to the previously mentioned strength in automotive sales relative to our other markets. However, we believe we have seen the bottom of the trough, as we saw growth in our flagship diode product line, which is traditionally served as a leading indicator of overall market demand. Quarter-on-quarter diode sales grew across all markets and applications, and order backlog has grown to support growth into Q2.
Networks, as expected, was down last quarter. We believe this was largely due to year-end inventory management. We have not yet seen a lift into our backlog demands and do not anticipate recovery in fiscal Q2. However, we believe substantial bookings from our new optoelectronics products will be a key growth driver in fiscal Q2, with continued momentum moving into the second half of the year. Gross margin from these new optoelectronics products is well above corporate average.
From the Aerospace & Defense market, we experienced the slight decline in revenue in fiscal Q1, once again, mainly due to inventory management. This time, in Asian radar programs. Our outlook in A&D is flat moving into fiscal Q2, while the prospect of potential sequestration in 2013 is a sobering one for anyone supplying the U.S. Defense market. We believe that the diversity of the U.S. defense-related business limits the risk to only a few percent of our total sales. We're optimistic we'll see growth in Q3 as new satellite communications products, as well as new customers, ramp into production.
Consistent with our previously announced strategy, we continue to build out our innovative product portfolio, releasing 28 new products this quarter, specifically 13 in Networks, 12 in Aerospace & Defense and 3 in Multimarket.
In summary, the overall business environment remains very challenging, however, we believe our strong execution and renewed focus on core strengths will deliver growth next quarter, consistent with our strategic plan.
With that, I'll now turn the call over to Conrad to discuss the financial results for the first quarter of 2013.