Vishay Intertechnology, Inc. has introduced the VEMD8082 silicon PIN photodiode that delivers a higher level of sensitivity in the visible/near infrared wavelength. The high speed and high sensitivity PIN photodiode is a low-profile, surface-mount device for biomedical applications such as heart rate and blood oxygen monitoring. It offers increased reverse light current, decreased diode capacitance and faster rise and fall times compared to previous-generation solutions.
In applications where the PIN photodiode is used to detect changes in blood volume and flow by measuring the amount of light absorbed or reflected by blood vessels, precise measurements are critical for diagnosing and monitoring conditions such as cardiovascular disease, Vishay said.
(Source: Vishay Intertechnology Inc.)
The VEMD8082 offers a radiant sensitive area of 6.0 mm² and an increase in reverse light current of 18% to 20%, based on wavelength. It also features a decreased diode capacitance from 50 pF to 46 pF, as well as faster rise times of 40 ns versus 110 ns, enabling higher sampling rates. The small form factor of 4.8 × 2.5 × 0.5 mm makes it suitable for integration into low-profile devices such as smartwatches.
Other specifications include an angle of half sensitivity of φ = ± 65° and floor life of 168 h, MSL 3, according to J-STD-020. It is compatible with infrared reflow solder process
Samples and production quantities of the VEMD8082 are currently available. Pricing for U.S. delivery starts at $0.85 each. Lead time for production orders is 12 weeks.
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