High speed PIN photodiode offers enhanced sensitivity for visible light

Vishay Intertechnology has introducted a new high speed silicon PIN photodiode with enhanced sensitivity for visible light. Featuring a rectangular 4.8mm x 2.5mm top-view, surface-mount package with an industry-low 0.48mm profile – 0.37mm lower than that of competing solutions – the VEMD8080 provides fast switching times and low capacitance of 47pF for precise signal detection in wearable devices and medical applications. With a radiant-sensitive area measuring 4.5 mm² the device uses the company's wafer technology to detect visible and near infrared radiation over a wide spectrum range from 350nm to 1100nm. For green LEDs, the device's sensitivity realises a 30% improvement over the standard technology in previous-generation solutions. When used with green LEDs, such as the company's VLMTG1400, the photodiode's small size and high sensitivity allow slim sensor designs for optical heart rate detection in wearable devices such as fitness trackers and smartwatches. The device features a ±65-degree angle of half-sensitivity, operating temperature range of -40C to +85C, and 950nm wavelength of peak sensitivity. RoHS-compliant, halogen-free, and Vishay Green, the photodiode provides a moisture sensitivity level (MSL) of 4 in accordance with J-STD-020 for a floor life of 72 hours.