4N25G

$0.20

Description：OPTOISO 5.3KV TRANS W/BASE 6-DIP
Series：4N25
Mfr：Isocom Components 2004 LTD
Package：Tube

SKU:59801ae0dfca Category: Transistor, Photovoltaic Output Optoisolators Brand: Isocom Components 2004 LTD

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Product introduction

Product Detailed Parameters

Description：OPTOISO 5.3KV TRANS W/BASE 6-DIP
Series：4N25
Mfr：Isocom Components 2004 LTD
Package：Tube
Number of Channels：1
Voltage - Isolation：5300Vrms
Current Transfer Ratio (Min)：20% @ 10mA
Current Transfer Ratio (Max)：-
Turn On / Turn Off Time (Typ)：-
Rise / Fall Time (Typ)：2µs, 2µs
Input Type：DC
Output Type：Transistor with Base
Voltage - Output (Max)：30V
Current - Output / Channel：50mA
Voltage - Forward (Vf) (Typ)：1.2V
Current - DC Forward (If) (Max)：60 mA
Vce Saturation (Max)：500mV
Operating Temperature：-55°C ~ 100°C
Mounting Type：Through Hole
Package / Case：6-DIP (0.400", 10.16mm)
Supplier Device Package：6-DIP
Grade：-
Qualification：-

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4N25G

Overview

The Isocom Components 4N25G is a single-channel optocoupler featuring a GaAs infrared LED coupled to an NPN phototransistor with base lead for enhanced switching speed. It utilizes a 6-pin DIP or surface mount package and provides 5300Vrms isolation voltage. The device supports DC input and transistor output, with a typical rise/fall time of 2μs. Operating temperature ranges from -55°C to 100°C. Current transfer ratio is specified at 20%, with maximum forward voltage of 1.5V and max input current of 60mA.

Feature Summary

Integrates an NPN phototransistor with a dedicated base lead to improve switching performance compared to standard configurations.
Provides high electrical isolation capability suitable for safety-critical signal transmission between circuits.
Offers flexible mounting options through available through-hole and surface-mount package variants.

Applications

Signal isolation in industrial control systems
Interface circuits for microprocessors and logic systems
Switching applications requiring fast response times

Procurement Notes

Verify the specific suffix (e.g., G, SMT) to confirm the exact physical package type required for your assembly process. Confirm that the manufacturer designation matches Isocom Components 2004 Ltd. Ensure the datasheet parameters align with your circuit requirements before ordering.

Selection Notes

Select this component when faster switching speeds are needed compared to standard phototransistor outputs. The base lead allows for external biasing to optimize turn-off time. Verify isolation voltage ratings meet system safety standards and check thermal limits for the intended operating environment.

Part Context

This part belongs to the widely recognized 4N25 series family of optocouplers. Isocom Components manufactures these devices as part of their broader portfolio of infrared optoelectronic components. The brand has a history dating back to the Litronix era, maintaining production standards for reliable optoisolation solutions.

Replacement Considerations

Compatible substitutes include the TLP521-1 and H11L1. Verify pinout compatibility and electrical specifications such as CTR and isolation voltage before swapping components in existing designs.

FAQ

What is the function of the base lead on the phototransistor?

The base lead allows for external connection to improve the switching speed of the phototransistor, specifically reducing the fall time compared to a standard two-terminal configuration.