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Littelfuse S401E Thyristor

The S401E is a Teccor® thyristor (SCR) designed for low-current switching applications. It features a glass-passivated junction, with a voltage capability up to 600V and surge capability up to 30A. The device is housed in a UL94V-0 flame-rated epoxy body with copper alloy leads that are 100% matte tin-plated. This 1A SCR is suitable for use in applications such as heat, lamp, and audible alarm controls for home appliances, AC solid-state switches, fluid level sensors, strobe lights, and capacitive-discharge ignition systems. It is ideal for various applications including HVAC, lighting, consumer electronics, sensing, and industrial controls.

Authorized Distributors
Source:Newark
Part No:S401E
Stock:1646
Inv Date:05-28-2026
Price: Unit price: $1.75
Buy/RFQ:
Source:DigiKey
Part No:S401E
Stock:21410
Inv Date:05-28-2026
Price: Unit price: $1.69
Buy/RFQ:
Part No:S401E
Stock:7457
Inv Date:05-29-2026
Price: Unit price: $1.67
Buy/RFQ:
Part No:S401E
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.99
Buy/RFQ:
Part No:S401E
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.56
Buy/RFQ:
Part No:S401E
Stock:1149
Inv Date:05-29-2026
Price: N/A
Buy/RFQ:

Littelfuse S401E Thyristor Specifications:

  • Voltage Capability: Up to 600V
  • Surge Capability: Up to 30A
  • Current Rating: 1A
  • Junction Passivation: Glass
  • Body Material: UL94V-0 epoxy, flame-rated
  • Lead Material: Copper alloy
  • Lead Finish: 100% matte tin-plated
  • Maximum Storage Temperature: -40°C to 125°C
  • Maximum Case Temperature: 125°C
  • Trigger Voltage: Less than 1.5V at few milliamperes
  • Gate Current: Typical 200mA
  • Peak Gate Current: 2A
  • Package Type: TO-92 (E) and Compak (C)
  • Soldering Temperature: Peak at 260°C for 10 seconds
  • Standards Compliance: RoHS

Buy the Littelfuse Series S401E SCR: 600V 1A Surge 30A

Enhance your electronic projects with the Littelfuse Series S401E thyristor, offering a voltage of up to 600V and surge current capacity of 30A. Perfect for low-current switching applications in appliances, sensors, and industrial controls. The device's robust construction, including flame-rated epoxy and matte tin-plated copper leads, ensures durability and dependable performance. Its compact TO-92 and Compak packages make it versatile for various mounting options. Purchase online now to ensure fast delivery and start reliably controlling your electrical systems with this high-quality SCR.

Order your Littelfuse Series S401E thyristor today and get reliable low-current switching performance for your home and industrial projects.

Frequently Asked Questions

Where can I buy Littelfuse S401E?

You can click on the BUY or RFQ button to purchase S401E from an authorized Littelfuse distributor.

How do I troubleshoot issues or seek technical support for part S401E?

You can download the S401E datasheet or visit the Littelfuse website for support.

Who is the manufacturer of S401E?

Littelfuse

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