4N45

$1.66

Description：OPTOISO 3.75KV DARL W/BASE 6-DIP
Series：-
Mfr：Broadcom Limited
Package：Tube

SKU:9e50a8a4fc5c Category: Transistor, Photovoltaic Output Optoisolators Brand: Broadcom Limited

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Product introduction

Product Detailed Parameters

Description：OPTOISO 3.75KV DARL W/BASE 6-DIP
Series：-
Mfr：Broadcom Limited
Package：Tube
Number of Channels：1
Voltage - Isolation：3750Vrms
Current Transfer Ratio (Min)：200% @ 10mA
Current Transfer Ratio (Max)：1000% @ 10mA
Turn On / Turn Off Time (Typ)：5µs, 150µs
Rise / Fall Time (Typ)：-
Input Type：DC
Output Type：Darlington with Base
Voltage - Output (Max)：7V
Current - Output / Channel：60mA
Voltage - Forward (Vf) (Typ)：1.4V
Current - DC Forward (If) (Max)：20 mA
Vce Saturation (Max)：-
Operating Temperature：-40°C ~ 85°C
Mounting Type：Through Hole
Package / Case：6-DIP (0.300", 7.62mm)
Supplier Device Package：6-DIP
Grade：-
Qualification：-

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4N45

Overview

The Broadcom Limited 4N45 is a single-channel high-speed optocoupler featuring a photodarlington output. It provides an insulation voltage of 3750 Vrms and supports data rates up to 100 kb/s. The device operates with a forward current of 20 mA, a forward voltage of 1.4 V, and a reverse voltage rating of 5 V. It delivers a current transfer ratio of 2000% and has a power dissipation capacity of 100 mW. Designed for through-hole mounting in a PDIP-6 package, it functions within a temperature range of 0°C to +70°C.

Feature Summary

Photodarlington output configuration for high gain applications
High insulation voltage capability for safety isolation
Guaranteed high current transfer ratio for efficient signal transmission

Applications

Industrial control systems requiring galvanic isolation
Power supply feedback loops
Microprocessor input/output interfacing

Procurement Notes

Verify component authenticity through authorized distributors as the lifecycle status is listed as obsolete. Confirm RoHS compliance requirements against specific project standards since the standard version is non-compliant. Check lead-free availability if environmental regulations mandate it. Validate packaging quantities against current supplier constraints due to limited supply conditions.

Selection Notes

Select this component when high current transfer ratio is critical for driving loads directly without additional amplification. The photodarlington output suits applications needing higher sensitivity compared to standard phototransistor outputs. Ensure the 100 kb/s speed meets system timing requirements. Consider the PDIP-6 package for through-hole assembly processes.

Part Context

The 4N45 belongs to the series of high-speed optocouplers manufactured by Broadcom Limited. It utilizes a photodarlington architecture to achieve superior current transfer characteristics. The device is designed for robust electrical isolation between input and output circuits in noisy environments.