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H21A1 from FAIRCHILD,Fairchild Semiconductor

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H21A1

Manufacturer: FAIRCHILD

PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH

Partnumber Manufacturer Quantity Availability
H21A1 FAIRCHILD 90 In Stock

Description and Introduction

PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH The part H21A1 is a reflective optical interrupter manufactured by FAIRCHILD. Here are its specifications:

- **Type**: Reflective Optical Interrupter  
- **Package**: Through Hole  
- **Configuration**: Phototransistor Output  
- **Operating Temperature Range**: -40°C to +85°C  
- **Wavelength**: 950 nm (Infrared)  
- **Forward Voltage (Vf)**: 1.5V (typical)  
- **Forward Current (If)**: 50 mA (max)  
- **Collector-Emitter Voltage (VCEO)**: 30V  
- **Emitter-Collector Voltage (VECO)**: 5V  
- **Collector Current (IC)**: 50 mA  
- **Power Dissipation (PD)**: 100 mW  
- **Isolation Voltage**: 2.5 kV RMS  
- **Response Time**: 15 μs (rise/fall time)  

This device is commonly used for object detection, position sensing, and similar applications.

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