S4020L

Description：SCR 400V 20A TO220
Series：-

SKU:bc753ab4fac9 Category: SCRs Brand: Littelfuse Inc.

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Product introduction

Product Detailed Parameters

Description：SCR 400V 20A TO220
Series：-
Mfr：Littelfuse Inc.
Package：Bulk
Voltage - Off State：400 V
Voltage - Gate Trigger (Vgt) (Max)：1.5 V
Current - Gate Trigger (Igt) (Max)：30 mA
Current - Hold (Ih) (Max)：40 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)：255A, 300A
SCR Type：Standard Recovery
Operating Temperature：-40°C ~ 125°C
Mounting Type：Through Hole
Package / Case：TO-220-3 Isolated Tab
Supplier Device Package：TO-220 Isolated Tab
Voltage - On State (Vtm) (Max)：1.6 V
Current - On State (It (AV)) (Max)：12.8 A
Current - On State (It (RMS)) (Max)：20 A
Current - Off State (Max)：10 µA

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S4020L

Overview

The Littelfuse S4020L is a standard recovery silicon controlled rectifier (SCR) designed for high-voltage and high-current applications. It features a rated repetitive off-state voltage of 400 V and an on-state current rating of 20 A. The device operates within a junction temperature range of -40°C to 125°C and exhibits a maximum on-state voltage of 1.6 V. Packaged in a TO-220 isolated tab configuration, it serves as a unidirectional switch for phase control circuits.

Feature Summary

Standard recovery thyristor construction for reliable switching
Isolated tab package design for efficient thermal management
Capable of handling high repetitive off-state voltages up to 400 V

Applications

Phase control applications
Heating system controls
Motor speed controls

Procurement Notes

Verify component authenticity through authorized channels due to the discontinued status. Confirm that the specific lot matches the required electrical specifications. Inspect the TO-220 package for physical integrity. Ensure compatibility with existing circuit designs before integration.

Selection Notes

Select this component for applications requiring a 400 V blocking capability and 20 A conduction. Consider the TO-220 isolation for mounting requirements. Evaluate thermal dissipation needs given the 1.6 V on-state drop. Verify gate trigger characteristics against the driving circuit capabilities.

Part Context

The S4020L belongs to the Teccor line of half-wave, unidirectional, gate-controlled rectifiers. This series complements sensitive gate SCRs by offering standard recovery performance. It is engineered for robust operation in industrial power control environments.