Vishay IR emitters are 30 percent brighter
850 nm, 890 nm, and 940 nm devices offer radiant intensity to 13 mW/sr in tiny SMD package
Vishay Intertechnology has broadened its optoelectronics range with the release of new high speed infrared (IR) emitters in a 2 mm by 1.25 mm by 0.8 mm 0805 surface-mount package, the industry's smallest package to offer opaque side walls.
Built on Vishay's SurfLight surface emitter chip technology, the VSMY5850X01 (850 nm), VSMY5890X01 (890 nm), and VSMY5940X01 (940 nm) deliver 30 percent higher radiant intensity than previous-generation devices over a wide temperature range from -40 to +110degCm according to the company.
Traditional PCB packages use an all-transparent epoxy to embed the emitter chip, resulting in side emissions that can cause a halo effect in camera images. Ideal for position tracking in virtual or augmented reality applications, the opaque side walls of the IR emitters released today prevent unwanted side emissions and simplify designs by eliminating the need for external barriers such as rubber rings.
Unlike standard IR emitters that emit light in all directions, the SurfLight VSMY5850X01, VSMY5890X01, and VSMY5940X01 emit nearly all of their light and power out of the top of the chip. With most of the light concentrated on the surface, the IR emitters achieve higher intensity to 13 mW/sr for proximity sensors, optical switches, and miniature light barriers. The devices combine their high brightness with a ± 60° angle of half intensity, fast rise and fall times of 7 ns, and low forward voltages down to 1.6 V at 100 mA.
The VSMY5850X01, VSMY5890X01, and VSMY5940X01 are qualified for use in automotive applications, following the stringent AEC-Q101 guidelines.