June 25, 2026 /SemiMedia/ — Vishay Intertechnology has expanded its optoelectronics portfolio with two automotive-grade PIN photodiode ambient light sensors designed for improved optical accuracy and long-term reliability in harsh environments.

The Vishay Semiconductors VEMD4210FX02 and VEMD5525FX02 are AEC-Q102 qualified and feature spectral sensitivity closely matched to the human eye response, with a peak wavelength of 530 nm and no infrared bump.

Vishay said eliminating the IR bump helps ensure more accurate visible light measurement without unwanted infrared influence. This is important for applications such as automatic light control in center information displays, head-up displays and rain light tunnel systems, as well as backlight dimming in industrial equipment.

The devices also provide stable angular characteristics, helping maintain spectral accuracy regardless of incoming light angle. This can support more consistent light measurement in automotive interiors where sunlight, reflections and changing driving conditions can affect sensor readings.

For space-constrained designs, the VEMD4210FX02 offers a typical reverse light current of 0.014 μA and a sensitivity range from 470 nm to 610 nm. It is housed in a compact 0805 package with a radiant sensitive area of 0.42 mm².

For applications requiring higher sensitivity, especially in low-light conditions, the VEMD5525FX02 provides reverse light current of 0.11 μA and a sensitivity range from 480 nm to 590 nm. It is offered in a top-view QFN package with a larger 7.5 mm² radiant sensitive area.

Both devices include wettable flanks for optical solder joint inspection. The sensors are RoHS-compliant, halogen-free and Vishay Green.