Littelfuse P0900EC TVS Thyristor Equivalent & Substitute Parts

Part Overview

The Littelfuse P0900EC is a 75V off-state, 400A peak pulse (8/20µs) transient voltage suppressor thyristor in TO-226-2 package configuration. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement. The P0900EC operates as a SIDACtor® device, providing transient voltage suppression through thyristor switching characteristics suitable for overvoltage protection applications.

Substiute Parts

P0900EC

Littelfuse Inc.In Stock: 923P0900EC Datasheet

Current PartRFQ

P0900ECL

Littelfuse Inc.In Stock: 20207P0900ECL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P0900EC is determined by electrical parameter equivalence and package compatibility. The critical parameters defining substitutability are:

• Voltage - Off State: 75V
• Voltage - Breakover: 98V
• Voltage - On State: 4V
• Current - Peak Pulse (8/20µs): 400A
• Current - Peak Pulse (10/1000µs): 100A
• Current - Hold (Ih): 150mA
• Capacitance: 140pF
• Package / Case: TO-226-2, TO-92-2 (TO-226AC)
• Mounting Type: Through Hole

The P0900ECL is a direct electrical equivalent manufactured by Littelfuse Inc. under the same base product number (P0900) with identical electrical specifications and package configuration. The primary distinction is product status: P0900ECL is active and available in bulk packaging, whereas P0900EC is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The P0900ECL is the direct substitute for the obsolete P0900EC. Both components share identical electrical specifications and package configuration. The P0900ECL offers the following advantages for new designs and procurement:

• Active product status with established supply chain availability (20,100 pcs in stock versus 891 pcs for P0900EC)
• RoHS3 compliance (P0900ECL) versus non-compliant status (P0900EC)
• REACH unaffected designation (P0900ECL)
• Bulk packaging option for production volumes

For applications currently using P0900EC, direct substitution with P0900ECL requires no circuit modifications or re-qualification, as all electrical and mechanical parameters are identical.

Frequently Asked Questions (FAQ)

Q: Can P0900ECL be used as a direct replacement for P0900EC?

A: Yes. The P0900ECL is electrically and mechanically identical to the P0900EC. All voltage ratings, current ratings, capacitance, and package specifications match exactly. No circuit changes are required.

Q: What is the difference between P0900EC and P0900ECL?

A: The primary differences are product status and compliance certifications. P0900EC is obsolete; P0900ECL is active. P0900ECL is RoHS3 compliant and REACH unaffected, while P0900EC is RoHS non-compliant. Electrical performance is identical.

Q: Are there any package compatibility concerns?

A: No. Both parts use the same TO-226-2 and TO-92-2 (TO-226AC) package configurations with through-hole mounting. PCB layouts and footprints are interchangeable.

Q: What is the availability difference?

A: P0900EC has 891 pcs in stock (obsolete status). P0900ECL has 20,100 pcs in stock (active status) and is available in bulk packaging, providing better long-term supply security.

Q: Does substitution require design re-qualification?

A: No. Since all electrical parameters and package specifications are identical, substitution does not require circuit re-analysis or functional re-testing.