VEMD2704 Silicon PIN Photodiode

Vishay's high-speed silicon PIN photodiode features enhanced sensitivity for visible light. Offered in a compact 2.0 mm by 1.8 mm by 0.6 mm top-view, surface-mount package with clear epoxy for maximum sensitivity, the VEMD2704 provides fast switching times of 70 ns and a low capacitance of 17.6 pF for precise signal detection in wearable devices. With a radiant-sensitive area measuring 1.51 mm² and high radiant sensitivity with a reverse light current of 1.17 µA and dark current of 0.03 nA, the device detects visible and near-infrared radiation over a wide spectrum range from 350 nm to 1,100 nm. In wearable devices such as fitness trackers and smartwatches, the photodiode can be used with green LEDs for optical heart rate detection and red LEDs for pulse oximetry applications. Offering a reduced size compared to previous-generation solutions, the VEMD2074 enables easier integration into smaller products like earbuds, allows several photodiodes to be included in the optical system for more precise signal detection, and offers increased flexibility in sensor placement. The device is also available at a lower cost than previous-generation photodiodes, making it ideal for cost-sensitive devices like smart bands.