Littelfuse P3100EC Transient Voltage Suppressor - Equivalent & Substitute Parts

Part Overview

The Littelfuse P3100EC is a 275V off-state, 400A peak pulse TVS thyristor in TO-226-2 packaging, part of the SIDACtor® series. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design requirements and procurement needs. The P3100EC provides transient voltage suppression with a 350V breakover voltage and 4V on-state voltage, suitable for applications requiring high-current pulse handling.

Substiute Parts

P3100EC

Littelfuse Inc.In Stock: 2166P3100EC Datasheet

Current PartRFQ

P3100ECL

Littelfuse Inc.In Stock: 8307P3100ECL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3100EC is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must maintain identical specifications for:

• Off-state voltage: 275V
• Breakover voltage: 350V
• On-state voltage: 4V
• Peak pulse current (8/20µs): 400A
• Peak pulse current (10/1000µs): 100A
• Hold current: 150mA
• Capacitance: 70pF
• Package configuration: TO-226-2, TO-92-2 (TO-226AC)
• Mounting type: Through Hole
• Number of elements: 1

The P3100ECL meets all these criteria and is classified as a direct manufacturer equivalent within the SIDACtor® series.

Parameter Comparison

Engineering Selection Recommendations

The P3100ECL is the direct equivalent for the obsolete P3100EC. Both components are manufactured by Littelfuse Inc. and belong to the SIDACtor® series with identical electrical and mechanical specifications.

The P3100ECL offers the following advantages for new designs and procurement:

• Active product status ensures ongoing availability and manufacturer support
• ROHS3 compliance satisfies current regulatory requirements
• REACH unaffected status confirms compliance with chemical substance regulations
• Identical performance characteristics enable direct substitution without circuit redesign

For applications currently using the P3100EC, transition to the P3100ECL is recommended to ensure long-term component availability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the P3100ECL be used as a direct replacement for the P3100EC?

A: Yes. The P3100ECL is electrically and mechanically identical to the P3100EC across all specified parameters, including voltage ratings, current ratings, capacitance, and package configuration. Direct substitution is possible without circuit modification.

Q: What is the difference between the P3100EC and P3100ECL?

A: The primary differences are product status and regulatory compliance. The P3100EC is obsolete and RoHS non-compliant, while the P3100ECL is active and ROHS3 compliant. All electrical and mechanical specifications are identical.

Q: Are there packaging differences between these parts?

A: Both parts use identical packaging: TO-226-2, TO-92-2 (TO-226AC) with through-hole mounting. No PCB layout or assembly modifications are required for substitution.

Q: Why should I transition from P3100EC to P3100ECL?

A: The P3100EC is classified as obsolete, which limits future availability. The P3100ECL is an active product with confirmed regulatory compliance (ROHS3, REACH unaffected), ensuring long-term supply chain reliability and regulatory adherence.

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution compatibility is determined by matching off-state voltage (275V), breakover voltage (350V), on-state voltage (4V), peak pulse currents (400A at 8/20µs, 100A at 10/1000µs), hold current (150mA), and capacitance (70pF). The P3100ECL matches all these parameters.