سنسور و مبدل سنسور نوری فتوترانزیستور

Product Attributes

Introduction

A phototransistor is a photodiode-amplifier combination integrated within a single silicon die. It can be thought of as a photodiode whose output current is fed into the base of a conventional transistor.

These photodiode-amplifier combinations are designed to overcome the primary limitation of photodiodes: unity gain. The typical gain of a phototransistor can range from 100 to over 1500. Many applications require greater output than a single photodiode can produce. Although a photodiode signal can be amplified through external circuitry (such as an op-amp), this is not always cost-effective. In such cases, a phototransistor offers a lower-cost alternative.

Features

• Low-cost visible and near-infrared light detection
• Low dark current
• Package with integrated visible light filter available
• Package with integrated IR filter available
• Multiple package options available
• RoHS compliant

Applications

• Coin counters
• Position sensors
• Remote controls
• Ambient light sensing
• Street light switching
• Fuel burner flame monitoring
• Safety protection devices
• Printer edge control
• Paper position and stack height monitoring