FOD2743A

Description：OPTOISOLATOR 5KV 1CH TRANS 8-DIP
Series：-
Mfr：onsemi
Package：Tube

SKU:d526b9fb1c7d Category: Transistor, Photovoltaic Output Optoisolators Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：OPTOISOLATOR 5KV 1CH TRANS 8-DIP
Series：-
Mfr：onsemi
Package：Tube
Number of Channels：1
Voltage - Isolation：5000Vrms
Current Transfer Ratio (Min)：50% @ 1mA
Current Transfer Ratio (Max)：100% @ 1mA
Turn On / Turn Off Time (Typ)：-
Rise / Fall Time (Typ)：-
Input Type：DC
Output Type：Transistor
Voltage - Output (Max)：70V
Current - Output / Channel：50mA
Voltage - Forward (Vf) (Typ)：1.07V
Current - DC Forward (If) (Max)：-
Vce Saturation (Max)：400mV
Operating Temperature：-40°C ~ 85°C
Mounting Type：Through Hole
Package / Case：8-DIP (0.300", 7.62mm)
Supplier Device Package：8-DIP

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FOD2743A

Overview

The onsemi FOD2743A is a single-channel optically isolated amplifier featuring an NPN phototransistor output. It provides 5000Vrms isolation voltage between input and output circuits. The device operates with a forward voltage of 1.5V and supports a maximum collector current of 50mA. Key electrical parameters include a collector-emitter saturation voltage of 400mV, a collector-emitter voltage rating of 70V, and a power dissipation capacity of 145mW. It includes an internal reference voltage of 2.495V and offers a current transfer ratio of 100% at 1mA input current. The component functions within a temperature range of -40°C to 85°C.

Feature Summary

Integrates an error amplifier coupler with transistor output for signal isolation
Provides high-voltage insulation capability for circuit separation
Includes an internal reference voltage for stable operation

Applications

Error amplifier coupling in power supply feedback loops
Isolated signal transmission in industrial control systems
Voltage regulation circuits requiring galvanic isolation

Procurement Notes

Verify the specific suffix designation against official datasheets to confirm package type and pinout configuration. Confirm end-of-life status and availability of qualified replacement components from the manufacturer before finalizing design implementations. Ensure compliance with relevant environmental regulations such as RoHS requirements for the specific production batch.

Selection Notes

Select this component when high isolation voltage and integrated error amplification are required in a compact form factor. Consider the operating temperature range and power dissipation limits relative to the application environment. Evaluate the current transfer ratio specifications to ensure adequate signal integrity across the isolation barrier for the intended load conditions.

Part Context

This component belongs to the FOD274x series of optically isolated amplifiers manufactured by onsemi. The series is designed for applications requiring precise signal isolation with integrated amplification capabilities. The FOD2743A variant specifically utilizes a transistor output structure to interface with downstream control logic or regulation circuits while maintaining electrical safety barriers.