Littelfuse S4S3 EC103xx/SxSx S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$5.59
Littelfuse S4S3 EC103xx/SxSx Series SIDACtor Thyristor Surge Protector

Littelfuse S4S3 EC103xx/SxSx Series SIDACtor Thyristor Surge Protector

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Model: S-4/S-3

In Stock (leaves warehouse same day if ordered before 3pm ET)

$5.59
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Littelfuse S4S3 EC103xx/SxSx Series SIDACtor Thyristor Surge Protector

The Littelfuse S4S3 EC103xx/SxSx Series SIDACtor Thyristor Surge Protector is designed to shield sensitive circuits from damaging voltage transients, offering surge capability up to 20 A and voltage capability up to 600 V. Housed in a compact DO-214 (Compak) package with glass-passivated junctions, this device combines a Repetitive Peak Off-State Voltage (VDRM) of 400 V, a low On-State Voltage (VTM) of 1.7 V, and precise gate-triggering characteristics for dependable overvoltage protection. RoHS compliant construction makes the S4S3 well suited for industrial, telecommunications, and power electronics designs that require reliable, code-conscious transient suppression.

Key Features

  • Surge Protection: Non-Repetitive Surge Current (ITSM 60Hz) rated to 20 A for absorbing transient overvoltage events.
  • Voltage Capability: Rated up to 600 V with a Repetitive Peak Off-State Voltage (VDRM) of 400 V for robust blocking performance.
  • Durable Construction: Glass-passivated junctions deliver stable, long-term reliability.
  • Low Clamping Voltage: On-State Voltage (VTM) of just 1.7 V minimizes let-through energy during surge events.
  • Precise Gate Triggering: Max Gate Trigger Current (IGTMAX) of 0.5 mA and Gate Trigger Voltage (VGTMAX) of 0.8 V for consistent turn-on.
  • Continuous Current Rating: On-State Current (Itrms) of 0.8 A supports steady-state circuit operation.
  • Compact Package: DO-214 (Compak) package size suits space-constrained board layouts.
  • Finish: RoHS compliant construction for restricted-substance compliance.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • VTM (V): 1.7
  • TGT (μs): 30
  • di/dt @ 110°C (A/μs): 50
  • Non-Repetitive Surge Current (ITSM 60Hz) (A): 20
  • Tq(μs): 45
  • Max Gate Trigger Current (IGTMAX) (mA): 0.5
  • Repetitive Peak Off-State Voltage (VDRM) (V): 400
  • On-State Current (Itrms) (A): 0.8
  • Gate Trigger Voltage (VGTMAX) (V): 0.8

Typical Applications

  • Overvoltage and Surge Protection Circuits
  • Telecommunications Equipment Protection
  • Industrial Control and Power Electronics
  • Printed Circuit Board-Level Transient Suppression

Why Littelfuse?

Littelfuse builds the S4S3 SIDACtor with glass-passivated junctions and RoHS-compliant construction to deliver dependable, code-conscious surge protection for demanding electronic designs. With a 600 V voltage capability, 20 A surge current rating, and precise gate-triggering characteristics, this device gives engineers a consistent, well-documented component for protecting circuits against damaging transient overvoltage events.

Product Specs

Product Type:
Surge Protection Thyristor
Voltage Rating:
600V
Amperage Rating:
20A
Standards:
RoHS
Department:
Electrical
Product Group:
Wiring Devices

Littelfuse S-4/S-3 – Frequently Asked Questions

How fast can I get the Littelfuse S-4/S-3 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Littelfuse S-4/S-3 come with a warranty?
Absolutely. The Littelfuse S-4/S-3 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Littelfuse S-4/S-3?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Littelfuse S-4/S-3 from ZenSupply?
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