FOD2743CSD

Description：OPTOISOLATOR 5KV 1CH TRANS 8-SMD
Series：-
Mfr：onsemi
Package：Tape & Reel (TR)

SKU:056d44370d20 Category: Transistor, Photovoltaic Output Optoisolators Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：OPTOISOLATOR 5KV 1CH TRANS 8-SMD
Series：-
Mfr：onsemi
Package：Tape & Reel (TR)
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：Surface Mount
Package / Case：8-SMD, Gull Wing
Supplier Device Package：8-SMD

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FOD2743CSD

Overview

The onsemi FOD2743CSD is a single-channel optoisolator featuring a transistor output and 5000Vrms isolation voltage. It operates within a temperature range of -40°C to +85°C in an 8-SMD package. Key electrical parameters include a maximum collector-emitter saturation voltage of 400mV, a maximum collector current of 50mA, and a collector-emitter voltage rating of 70V. The device exhibits a typical forward voltage of 1.2V and a current transfer ratio ranging from 50% to 100% at a forward current of 20mA.

Feature Summary

Provides high-voltage galvanic isolation between input and output circuits for noise immunity.
Integrates an NPN phototransistor output stage for direct interfacing with logic systems.
Designed for surface-mount assembly to support automated manufacturing processes.

Applications

Error amplifier coupling in switching power supplies
Feedback loops in isolated DC-DC converters
Signal transmission across ground potential barriers

Procurement Notes

Verify the specific suffix 'CSD' against official datasheets to confirm pinout and isolation ratings. Confirm RoHS compliance status as required by project specifications. Check manufacturer lifecycle notices for obsolescence warnings before finalizing procurement plans.

Selection Notes

Select this component when 5000Vrms isolation is mandatory for safety standards. Ensure the 50mA output current capability meets load requirements. Verify that the 8-SMD footprint aligns with the PCB layout constraints and thermal management strategy.

Part Context

This part belongs to the FOD2743 family of error amplifier optocouplers. These devices are engineered for precise signal transfer in isolated feedback paths. The series supports various packaging options to accommodate different board space and mounting requirements.