VISHAY BPW21R Colour Corrected Photodiode, TO-5

The VISHAY BPW21R is a high-precision, leaded silicon photodiode housed in a robust TO-5 package. Engineered for applications that require accurate light measurement, this device features a built-in colour correction filter that approximates the spectral response of the human eye, making it an ideal choice for colour measuring and photometric applications.

Constructed as a planar silicon PN photodiode in a hermetically sealed case, the BPW21R delivers high photo sensitivity and excellent linearity. With an angle of half sensitivity of ±50°, it offers a wide field of view, while a very low dark current of just 2000 pA ensures minimal noise in low-light conditions. The device also boasts high shunt resistance, contributing to stable and reliable performance across its operating temperature range of -40°C to +125°C.

Key Features

• High photo sensitivity with a wavelength of peak sensitivity at 565 nm
• Adapted to human eye responsivity for accurate photometric measurements
• High linearity and high shunt resistance
• Hermetically sealed TO-5 package with a flat glass window
• Body diameter of 8.13 mm

Typical Applications

• Industrial sensing systems
• Colour measuring instruments
• High-precision light detection
• Linear light response applications

Whether used for colour analysis, ambient light monitoring, or precision industrial sensing, the VISHAY BPW21R provides the accuracy and stability required for demanding optical measurement tasks.