S401E

$1.16

Description：SCR 400V 1A TO92
Series：-

SKU:046fba5f9526 Category: SCRs Brand: Littelfuse Inc.

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Product introduction

Product Detailed Parameters

Description：SCR 400V 1A TO92
Series：-
Mfr：Littelfuse Inc.
Package：Bulk
Voltage - Off State：400 V
Voltage - Gate Trigger (Vgt) (Max)：1.5 V
Current - Gate Trigger (Igt) (Max)：10 mA
Current - Hold (Ih) (Max)：30 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)：25A, 30A
SCR Type：Standard Recovery
Operating Temperature：-40°C ~ 125°C
Mounting Type：Through Hole
Package / Case：TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package：TO-92
Voltage - On State (Vtm) (Max)：1.6 V
Current - On State (It (AV)) (Max)：640 mA
Current - On State (It (RMS)) (Max)：1:00 AM
Current - Off State (Max)：10 µA

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S401E

Overview

The Littelfuse S401E is a bidirectional triac designed for AC power control applications. It features a 400 V rated repetitive off-state voltage and supports an RMS on-state current of 1 A. The device operates within a temperature range of -65 °C to +125 °C and is housed in a TO-92 through-hole package. Key electrical characteristics include a maximum holding current of 15 mA, a gate trigger voltage of 2.5 V, and a gate trigger current ranging from 25 mA to 50 mA. The on-state voltage is specified at 1.6 V, with non-repetitive peak currents rated at 16.7 A or 20 A depending on the specific variant configuration.

Feature Summary

Bidirectional switching capability for alternating current circuits
Robust thermal performance across extended industrial temperature ranges
Standardized through-hole mounting for reliable PCB integration

Applications

Lighting dimmer controls
Small motor speed regulation
Heater control circuits

Procurement Notes

Verify the exact suffix against the manufacturer datasheet to confirm specific current ratings and packaging options. Ensure compatibility with existing board layouts for the TO-92 footprint. Confirm RoHS compliance status if required by project specifications before finalizing procurement orders.

Selection Notes

Select this component when a low-current AC switch is required for general-purpose control tasks. Consider the 400 V rating for low-voltage mains applications. Evaluate the gate sensitivity requirements against the driver circuit capabilities to ensure reliable triggering under all operating conditions.

Part Context

This part belongs to the Sx01 series of triacs manufactured by Littelfuse. These components are engineered for cost-effective power switching in consumer electronics and home appliances. The series provides a balance of performance and reliability for standard AC control duties.

Replacement Considerations

Check for direct equivalents such as the Q401E4 from the same manufacturer family. Verify pinout compatibility and electrical parameter overlaps before substituting other brands like STMicroelectronics or Vishay.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.