Tools of the Trade
February 2006
IR phototransistors
To provide a miniature surface-mount device for IR detection in sensing applications, TT electronics OPTEK Technology has developed a series of NPN silicon phototransistors in 1206 chip packages. The OP520/OP521 Series surface-mount devices offer response times of 15 s with a peak response to 880 nm wavelength. The OP520 features an opaque lens to shield it from ambient light, while the OP521 lens is clear to offer a wide response range. The series performs at collector-emitter voltages of 30 V, emitter-collector voltage of 5 V, collector current of 20 mA, and power dissipation of 75 mW at 25°C. Operation is rated from -25 to +85°C (-13 to 185°F).
read full story*
* This is a .pdf file. You’ll need the Adobe Acrobat Reader to view it.
