DESCRIPTION
BPW21R is a planar Silicon PN photodiode in a hermetically sealed short TO-5 case, especially designed for high precision linear applications.
Due to its extremely high dark resistance, the short circuit photocurrent is linear over seven decades of illumination level.
On the other hand, there is a strictly logarithmic correlation between open circuit voltage and illumination over the same range.
The device is equipped with a flat glass window with built in color correction filter, giving an approximation to the spectral response of the human eye.

FEATURES
• Package type: leaded
• Package form: TO-5
• Dimensions (in mm): Ø 8.13
• Radiant sensitive area (in mm2): 7.5
• High photo sensitivity
• Adapted to human eye responsivity
• Angle of half sensitivity: ϕ = ± 50°
• Hermetically sealed package
• Cathode connected to package
• Flat glass window
• Low dark current
• High shunt resistance
• High linearity
• Compliant to RoHS Directive 2002/95/EC and in accordance with WEEE 2002/96/EC

APPLICATIONS
• Sensor in exposure and color measuring purposes