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Phototransistor 3DU33
Phototransistor 3DU33

Phototransistor 3DU33

KSh200.00

41 in stock

Phototransistor 3DU33
Phototransistor 3DU33

KSh200.00

SKU: 1953 Category: Electronic components
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Description

Phototransistor 3DU33

Phototransistor operation

  • Photo transistors are operated in their active regime, although the base connection is left open circuit or disconnected because it is not required.
  •  base of the photo transistor would only be used to bias the transistor so that additional collector current was flowing and this would mask any current flowing as a result of the photo-action.
  • For operation the bias conditions are quite simple. The collector of an n-p-n transistor is made positive with respect to the emitter or negative for a p-n-p transistor.
  • light enters the base region of the phototransistor where it causes whole electron pairs to be generated. This mainly occurs in the reverse biased base-collector junction.
  • hole-electron pairs move under the influence of the electric field and provide the base current, causing electrons to be injected into the emitter.

 

Specification 

  • Material: Silicon
  • Reverse Breakdown Voltage: 15 VDC
  • Maximum Working Voltage: 10 VDC
  • Dark Current: 0.3 μA
  • Light Current: 0.5 – 1 mA
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