4N25FM

Description：OPTOISO 7.5KV TRANS W/BASE 6-SMD
Series：-
Mfr：onsemi
Package：Tube

SKU:c1c739cbefb6 Category: Transistor, Photovoltaic Output Optoisolators Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：OPTOISO 7.5KV TRANS W/BASE 6-SMD
Series：-
Mfr：onsemi
Package：Tube
Number of Channels：1
Voltage - Isolation：7500Vpk
Current Transfer Ratio (Min)：20% @ 10mA
Current Transfer Ratio (Max)：-
Turn On / Turn Off Time (Typ)：2µs, 2µs
Rise / Fall Time (Typ)：-
Input Type：DC
Output Type：Transistor with Base
Voltage - Output (Max)：30V
Current - Output / Channel：-
Voltage - Forward (Vf) (Typ)：1.18V
Current - DC Forward (If) (Max)：60 mA
Vce Saturation (Max)：500mV
Operating Temperature：-55°C ~ 100°C
Mounting Type：Surface Mount
Package / Case：6-SMD, Gull Wing
Supplier Device Package：6-SMD

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4N25FM

Overview

The onsemi 4N25FM is a single-channel phototransistor output optocoupler housed in a surface-mount SMD-6 package. It provides electrical isolation with an insulation voltage of 7500 Vrms. The device features a maximum collector-emitter voltage of 30 V and a forward current rating of 60 mA. Key electrical parameters include a typical current transfer ratio of 20% at 10 mA input, a maximum collector-emitter saturation voltage of 500 mV, and a reverse voltage of 6 V. Power dissipation is rated at 150 mW, operating within a temperature range of -40 °C to +100 °C.

Feature Summary

Provides high-voltage electrical isolation between input and output circuits
Integrates an infrared emitting diode with a phototransistor detector
Designed for surface-mount assembly in compact electronic systems

Applications

Industrial control signal isolation
Solid-state relay driver interfaces
Microcontroller communication isolation

Procurement Notes

Verify the specific suffix FM against official datasheets to confirm surface-mount configuration and pinout compatibility. Ensure that the component meets required insulation voltage standards for the target application. Confirm RoHS compliance status through manufacturer documentation prior to integration into final products.

Selection Notes

Select this component when surface-mount packaging is required for single-channel isolation applications. Evaluate the 7500 Vrms insulation capability against system safety requirements. Consider the 30 V collector-emitter voltage limit for load switching scenarios. Verify thermal management needs based on the 150 mW power dissipation rating.

Part Context

This part belongs to the standard transistor output optocoupler family from onsemi. It serves as a surface-mount alternative to traditional through-hole variants like the 4N25 series. The device maintains functional compatibility with common logic-level interface designs while offering PCB space savings.