FOD2743BV

$0.71

Description：OPTOISOLATOR 5KV 1CH TRANS 8-DIP
Series：-
Mfr：Fairchild Semiconductor
Package：Bulk

SKU:18f81127d061 Category: Transistor, Photovoltaic Output Optoisolators Brand: Fairchild Semiconductor

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Product introduction

Product Detailed Parameters

Description：OPTOISOLATOR 5KV 1CH TRANS 8-DIP
Series：-
Mfr：Fairchild Semiconductor
Package：Bulk
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
Grade：-
Qualification：-

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FOD2743BV

Overview

The FOD2743BV is an optically isolated amplifier integrating a precision programmable shunt reference and a transistor output optocoupler. It features a nominal current transfer ratio of 50%, with a maximum dark power supply of 50 nA. The device supports a maximum forward current of 20 mA and has a forward voltage of 1.2 V. It provides high isolation with a maximum insulation voltage of 5000 Vrms. The collector-emitter breakdown voltage is at least 70 V, and the unit operates within a temperature range of -40°C to +85°C in an 8-pin DIP package.

Feature Summary

Integrates a KA431 precision programmable shunt reference with an optocoupler for error amplification
Provides high-voltage electrical isolation between input and output circuits
Features low dark current characteristics for stable operation

Applications

Switching power supply feedback loops
Battery charger control circuits
Isolated voltage regulation systems

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm RoHS compliance status and lead times directly with suppliers. Ensure the specific suffix matches required packaging and pin configuration. Check for obsolescence notices as this series may be discontinued by onsemi. Validate datasheet revisions against current design requirements before procurement.

Selection Notes

Select this component when precise voltage referencing and galvanic isolation are required in a single package. The integrated shunt reference simplifies circuit design compared to discrete solutions. Consider the 5000 Vrms isolation rating for safety-critical applications. Evaluate thermal performance within the specified operating temperature range. Compare current transfer ratio specifications against load requirements.

Part Context

This device belongs to the FOD2743 family of optically isolated amplifiers manufactured by Fairchild Semiconductor, now part of onsemi. The family includes variants with different packaging options such as surface mount and through-hole configurations. These components are designed for applications requiring accurate error signal transmission across isolation barriers.