As a necessary part of driving safety, the brake light transmits important signals to the driver behind, which directly affects the safety and reliability of driving. In recent years, environmental pollution has affected air quality and the performance of automobile exhaust on automobile parts. Will have an impact. Then, after years, how to ensure that the lights are still clear and bright?
ROHM has developed the industry's first silver-free high-brightness red LED "SML-Y18U2T" for the automotive industry, which is very helpful for the reliability of applications such as automotive brake lights that are used in harsh environments. In order to prevent vulcanization*1), keep the lights bright for a long time, and safely escort you.
The product developed this time replaces the silver used in the conventional wafer bonding solder paste and the frame with other materials such as gold, and realizes completely silver-free. This eliminates the LED brightness degradation caused by corrosion of the silver, which improves the reliability of the application. For example, after using 240 hours (10 days) of the previous product and the new product under the vulcanization test conditions, the luminous flux of the new product can be improved by about 40% compared with the old product.
This product is sold from February 2018 (sample price is 200 yen/piece: excluding tax). It is expected to be put into mass production on a monthly basis of 1 million units from April 2019. The preliminary process was carried out at the Roma headquarters (Kyoto, Japan), and the later processes were carried out at ROHM Semiconductor (China) Co., Ltd. (China) and ROHM-Wako Electronics (Malaysia) Sdn. Bhd. (Malaysia).
In the future, ROHM will continue to meet the needs of its customers and continue to expand its lineup of products with excellent ease of use.
Background In recent years, automobile brake lamps have increasingly adopted LED lamps, and in order to reduce the number of LEDs to be mounted, the demand for high-brightness products is increasing. On the other hand, in the automotive and industrial equipment applications where electronic products are used in harsh environments, the problem of vulcanization of metal materials due to environmental factors has become the main cause of aging, and prevention of vulcanization has become indispensable for ensuring reliability. A ring.
Product introduction The industry's first silver-free red LED, excellent resistance to vulcanization and high brightness. There has always been a problem that the solder paste portion used in the device wafer bonding*2) is blackened and the LED luminous intensity is lowered. However, ROHM utilizes the advantages of a vertically integrated production system from component to package. The wafer bonding is made of gold-tin (AuSu), the lead is made of gold, and the frame is made of gold-palladium (AuPd), which makes it completely silver-free. High brightness and excellent resistance to vulcanization.
In the vulcanization test, the luminous flux of products using silver-plated frame and silver paste in the past is 70% after one cycle (24 hours) and 60% after 10 cycles. The longer the time, the lower the luminous flux; After 10 cycles (240 hours), it still maintains almost 100% high luminous flux.
Other product specifications
Steel Cable Tray,Metal Cable Tray,Stainless Steel Cable Ladder,Metallic Cable Trunking
Rayhot Technology Group Co.,Ltd , https://www.cnrayhot.com