Vishay 850 nm IR emitter

Vishay has broadened its optoelectronics portfolio with the release of a 850 nm infrared (IR) emitter in a compact 3.85 x 3.85 x 2.24 mm top-view SMD package.

Based on SurfLight surface emitter chip technology and featuring an integrated lens, the emitter offers high drive current capability, high radiant intensity and high optical power while providing low thermal resistivity.

It features a 42 x 42 mil emitter chip, which supports a low thermal resistance of 10K/W junction-to-pin, and enables high drive currents up to 1 A and pulses up to 5 A. The emitter’s integrated lens supports a ±45° angle of half intensity, resulting in ultrahigh radiant intensity of 350 mW/sr at 1 A and 1600 mW/sr at 5 A (pulses). This is said to be more than double the radiant intensity of devices without lenses.

With its high drive current capabilities and optical power to 660 mW at 1 A, the device can replace multiple standard SMD devices, allowing designers to reduce the component count and improve performance in a wide variety of applications. The emitter is optimised for IR illumination in CCTV, gaming and road cash systems, in addition to long-range proximity applications such as presence detection for wake-up functions in office equipment.

The device offers fast switching speeds down to 15 ns, low forward voltages down to 1.8 V at 1 A and operating temperatures from -40 to +95°C. The device ensures a shelf life of 168 h and provides a moisture sensitivity level (MSL) of 3 in accordance with J-STD-020. Supporting lead (Pb)-free reflow soldering, the device is RoHS-compliant, halogen-free and Vishay Green.