HMA2701B

Transistor, Photovoltaic Output Optoisolators Overview

The HMA2701B is a single-channel transistor output optocoupler manufactured by Fairchild Semiconductor. It features a gallium arsenide infrared emitting diode coupled to a silicon phototransistor within a compact 4-pin Mini-Flat package. Key electrical specifications include a collector-emitter breakdown voltage of 40 V, a maximum forward current of 50 mA, and a nominal current transfer ratio of 80%. The device supports surface mount installation with an operating temperature range up to 100 °C and offers high insulation capability rated at 3750 V.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates a gallium arsenide infrared LED with a silicon phototransistor for signal isolation
• Provides high insulation voltage rating suitable for safety-critical applications
• Utilizes a compact 4-pin Mini-Flat surface mount package design

Transistor, Photovoltaic Output Optoisolators Applications

• Signal isolation in industrial control systems
• Interface circuits for computing and communication equipment
• Consumer electronics requiring galvanic isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'B' against official Fairchild documentation to confirm pinout configuration and packaging pitch variations. Ensure compliance with RoHS standards and check for UL recognition or VDE approval requirements relevant to the target application's safety regulations before finalizing procurement.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a single-channel isolation solution with a standard transistor output is required. Consider the 40 V collector-emitter voltage limit and 80% current transfer ratio for logic interface compatibility. Evaluate the Mini-Flat package dimensions for PCB space constraints and verify thermal management needs for operation near the 100 °C upper limit.

Transistor, Photovoltaic Output Optoisolators Part Context

The HMA2701B belongs to the HMA2701 series of full pitch Mini-Flat package 4-pin optocouplers produced by Fairchild Semiconductor. This series includes related models such as the HMA124 and HMA121, which share similar structural designs utilizing gallium arsenide LEDs driving silicon phototransistors in compact packages for various electronic applications.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-reference with Fairchild's official replacement guide or ON Semiconductor catalogs for equivalent single-channel transistor output optocouplers with matching package and electrical ratings.