S4008FS24

Description：SCR 400V 8A TO202
Series：-

SKU:263b5f5a3f7d Category: SCRs Brand: Littelfuse Inc.

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Product introduction

Product Detailed Parameters

Description：SCR 400V 8A TO202
Series：-
Mfr：Littelfuse Inc.
Package：Bulk
Voltage - Off State：400 V
Voltage - Gate Trigger (Vgt) (Max)：800 mV
Current - Gate Trigger (Igt) (Max)：200 µA
Current - Hold (Ih) (Max)：6 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)：83A, 100A
SCR Type：Sensitive Gate
Operating Temperature：-40°C ~ 110°C
Mounting Type：Through Hole
Package / Case：TO-202 Short Tab
Supplier Device Package：TO-202
Voltage - On State (Vtm) (Max)：1.6 V
Current - On State (It (AV)) (Max)：5.1 A
Current - On State (It (RMS)) (Max)：8:00 AM
Current - Off State (Max)：5 µA

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S4008FS24

Overview

The Littelfuse S4008FS21 is a sensitive silicon-controlled rectifier (SCR) from the Teccor line, designed as a half-wave unidirectional gate-controlled device. It features an electrically isolated TO-220 package with a maximum on-state current of 8 A and a repetitive peak off-state voltage rating of 400 V. The component utilizes glass-passivated junctions for parameter stability and offers high surge capability up to 100 A. Key electrical specifications include a DC gate trigger current of 200 µA, a peak on-state voltage of 1.6 V, and a non-repetitive peak surge current rating of 100 A at 60 Hz.

Feature Summary

Electrically isolated TO-220 package allowing low-cost assembly
Glass-passivated chip for long-term reliability
High voltage capability up to 600 V across the series
High surge current handling capacity

Applications

AC switching and phase control applications
Speed controls requiring noise immunity
Temperature modulation controls
Lighting controls

Procurement Notes

Verify the specific suffix against the manufacturer's catalog to confirm isolation ratings and lead configurations. Ensure the ordering part number matches the required voltage and current ratings for the target circuit design. Confirm compliance with RoHS standards if applicable to the manufacturing process.

Selection Notes

Select this component based on the required 400 V blocking voltage and 8 A continuous current capacity. Consider the thermal resistance characteristics and maximum allowable case temperature curves when designing heat dissipation solutions. Verify that the gate trigger sensitivity meets the driving circuit requirements.

Part Context

This device belongs to the Teccor line of sensitive SCRs, which complement the power SCR portfolio. The series offers ratings from 0.8 A to 10 A with voltages ranging from 200 V to 600 V. These devices are characterized by high gate sensitivities and robust construction suitable for various industrial and commercial electronic applications.