FODM121D

$0.16

Description：OPTOISO 3.75KV 1CH TRANS 4-SMD
Series：-
Mfr：onsemi
Package：Box

SKU:d5d3bee6e317 Category: Transistor, Photovoltaic Output Optoisolators Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：OPTOISO 3.75KV 1CH TRANS 4-SMD
Series：-
Mfr：onsemi
Package：Box
Number of Channels：1
Voltage - Isolation：3750Vrms
Current Transfer Ratio (Min)：50% @ 5mA
Current Transfer Ratio (Max)：600% @ 5mA
Turn On / Turn Off Time (Typ)：-
Rise / Fall Time (Typ)：3µs, 3µs
Input Type：DC
Output Type：Transistor
Voltage - Output (Max)：80V
Current - Output / Channel：80mA
Voltage - Forward (Vf) (Typ)：1.3V (Max)
Current - DC Forward (If) (Max)：50 mA
Vce Saturation (Max)：400mV
Operating Temperature：-40°C ~ 110°C
Mounting Type：Surface Mount
Package / Case：4-SMD, Gull Wing
Supplier Device Package：4-SMD

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FODM121D

Overview

The FODM121D is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output and operates within a temperature range of -40°C to +100°C. Key electrical parameters include a maximum collector-emitter voltage of 80 V, a maximum collector current of 80 mA, and a forward current of 50 mA. The device provides 3750 Vrms isolation voltage and has a typical power dissipation of 150 mW. It is housed in a compact SMD-4 package.

Feature Summary

Provides high-voltage electrical isolation between input and output circuits
Utilizes an NPN phototransistor for reliable DC signal transmission
Designed for surface-mount assembly in space-constrained applications

Applications

General-purpose digital signal isolation
Microcontroller interface circuits
Power supply feedback loops

Procurement Notes

Verify the specific suffix against official datasheets to confirm exact performance characteristics, as variations exist within the family. Confirm availability status with authorized distributors, as some variants may be discontinued or have extended lead times. Ensure compliance with RoHS directives if required for your specific manufacturing environment.

Selection Notes

Select this component when a standard-speed transistor output isolator is sufficient for the application. Consider the 80 V collector-emitter voltage rating to ensure compatibility with downstream logic levels. Evaluate the thermal requirements based on the 150 mW power dissipation limit in the chosen enclosure configuration.

Part Context

This component belongs to the FODM121 series of optocouplers from onsemi. The series offers various packaging and speed options. The FODM121D specifically denotes a variant within this lineup, sharing core architectural features with other members like the FODM121AV while differing in specific electrical tolerances or packaging configurations.