Osram Introduces Next-Gen Photodiodes
Featuring Smaller Package Size and Improved Flexibility For Customers
Osram Opto Semiconductors presents the world’s first surface-mount technology (SMT) package for large-area photodiode chips, which are ideally suited for use in rain sensors. The new SFH 2200 A01 and SFH 2200 FA A01 are mounted behind the vehicle’s windshield. When a raindrop falls on the windshield, the diodes detect a change in the incidence of light. This change is then translated by the system to control the windshield wipers and the rate at which they operate. The photodiode chips comply with the strict demands of the automotive industry and are approved to operate at temperatures up to 125°C. The SFH 2200 A01 and SFH 2200 FA A01 photodiodes also meet the requirements for AEC-Q101-C qualification. Once again, Osram Opto Semiconductors supports the trend for the miniaturization of photodiodes.
Developers at Osram Opto Semiconductors have significantly improved the moisture sensitivity level (MSL) in its photodiode chips. The MSL index is critical in helping determine when the amount of moisture in a component is high enough for damage to be caused during soldering. Customers now have more time to solder the SFH 2200 A01 and SFH 2200 FA A01 on the board.
The new user-friendly photodiodes from Osram Opto Semiconductors can be soldered without damage for up to one year after initial contact with air. This applies when the components are stored under defined conditions at a temperature of ≤ 30 °C and 60 percent humidity after the dry packaging has been opened. When these conditions are met, the MSL of the photodiodes is 2, giving customers the assurance that they can solder the products without the possibility of damage. Comparable products have an MSL of 4, which means there is no guarantee that the component can be soldered 72 hours after opening without causing damage. Osram’s new photodiodes translate to extraordinary flexibility for customers in terms of how and when they implement their work processes.
Additionally, Osram’s new broadband diodes are surface mountable, allowing them to be soldered using the reflow method that makes it easy to check the solder at all the contacts.
“Osram is once again leading the pack with the development of one of the industry’s smallest photodiodes that will reduce manufacturing costs by providing a longer shelf life after opening,” said Rajeev Thakur, Regional Marketing Manager at Osram Opto Semiconductors. “Osram’s innovative design and engineering has led the company to achieve MSL level 2 for the SFH 2200 A01 and the SFH 2200 FA A01. By using encapsulation material containing silicone, we’ve provided a way for moisture and gases to escape more quickly during soldering. The combination of silicone and the stability of the plastic package of the component ensures that the photodiodes are particularly robust.”
Further miniaturization of the component underscores the flexibility and user friendliness of the SFH 2200 A01 and SFH 2200 FA A01. The footprint of the compact packages is 4.0 mm x 5.1 mm x 0.85 mm – much smaller than the 4.0 mm x 6.5 mm x 1.15 mm of its predecessors, the BPW34S and BPW34FAS.
SFH 2200 A01 and SFH 2200 FA A01 are almost identical silicon photodiodes. The only difference is that SFH 2200 FA A01 has a daylight filter.
OSRAM, based in Munich, is a leading global high-tech company with a history dating back more than 110 years. Primarily focused on semiconductor-based technologies, our products are used in highly diverse applications ranging from virtual reality to autonomous driving and from smart phones to smart and connected lighting solutions in buildings and cities. OSRAM uses the endless possibilities of light to improve the quality of life for individuals and communities. OSRAM’s innovations enable people all over the world not only to see better, but also to communicate, travel, work and live better. OSRAM has approximately 26,400 employees worldwide as of end of fiscal 2017 (September 30) and generated revenue of more than €4.1 billion. The company is listed on the stock exchanges in Frankfurt and Munich (ISIN: DE000LED4000; WKN: LED400; trading symbol: OSR). Additional information can be found at www.osram.com.