MALVERN, PA — Vishay Intertechnology, Inc. (NYSE: VSH) expanded its optoelectronics portfolio with the debut of a compact, high-speed silicon PIN photodiode designed to boost performance in emerging biomedical and consumer wearable devices.
The new Vishay Semiconductors VEMD8083 photodiode features a 3.2 mm by 2.0 mm surface-mount package with a slim 0.6 mm profile—small enough for smart rings and other miniaturized health-monitoring products. Despite its reduced footprint, the device incorporates a 2.8 mm² radiant-sensitive area, enabling high reverse light currents of 11 μA at 525 nm, 14 μA at 660 nm, and 16 μA at 940 nm.
Vishay says the increased sensitivity is particularly valuable for photoplethysmography (PPG), a core technology behind heart-rate and blood-oxygen monitoring. The enhanced light-detection capability supports more accurate readings of blood-volume and blood-flow changes—important for tracking cardiovascular health in both consumer and clinical settings.
The VEMD8083 is pin-to-pin compatible with competing devices and detects visible to near-infrared light across a broad spectrum from 350 nm to 1100 nm. For applications requiring high sampling rates, the component provides rise and fall times of 30 nanoseconds and a diode capacitance of 50 pF. Its ±60° angle of half-sensitivity and operating temperature range of –40 °C to +85 °C support integration into demanding environments and compact form factors.
Fully RoHS-compliant, halogen-free, and classified as Vishay Green, the VEMD8083 carries a moisture-sensitivity rating of MSL 3 under J-STD-020, giving assemblers a 168-hour floor life.
With wearables and point-of-care devices pushing toward smaller, more capable optical sensors, Vishay’s latest photodiode positions the company to capture growing demand in next-generation health-monitoring technologies.
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