DESCRIPTION
The SD138-11-31-211 device features two silicon PIN photodiodes vertically integrated a hermetic TO-5 package. The top photodiode absorbs a portion of the light and the remaining light is transmitted to the bottom photodiode. The current ratio of the two photodiodes is used to remotely determine and monitor the color temperature of an object.
The SD138-11-31-211 can find application in dual wavelength power meters and remote color temperature sensing.

FEATURES
• Large Active Area
• Low Noise
• High Shunt Resistance
• Hermetically Sealed
• High Saturation

APPLICATIONS
• Dual Wavelength Power Meters
• Remote Color Temperature Sensing