P3203ACMC Equivalent & Substitute Parts

Part Overview

The P3203ACMC is a three-element SIDACtor® thyristor transient voltage suppressor manufactured by Littelfuse Inc., designed for 270V off-state voltage applications with 400A peak pulse current capability in a TO-220 Modified 3-SIP package. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing system support and new design implementations. The substitute part P3203ACMCL maintains identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Substiute Parts

P3203ACMC

Littelfuse Inc.In Stock: 958P3203ACMC Datasheet

Current PartRFQ

P3203ACMCL

LittelfuseIn Stock: 793P3203ACMCL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3203ACMC with the P3203ACMCL is based on strict equivalence across all provided electrical and mechanical parameters. Both parts share identical specifications for breakover voltage (350V), off-state voltage (270V), on-state voltage (8V), peak pulse current ratings (400A at 8/20µs and 100A at 10/1000µs), hold current (150mA), element count (3), capacitance values (30pF, 40pF), and package configuration (3-SIP TO-220 Modified through-hole mounting). The substitution is valid because all critical parameters that determine functional compatibility remain unchanged between the two part numbers.

Parameter Comparison

Engineering Selection Recommendations

The P3203ACMCL is the direct functional equivalent of the P3203ACMC for all circuit applications requiring 270V off-state TVS thyristor protection with 400A peak pulse current handling. Selection of P3203ACMCL is supported by its active product status, eliminating obsolescence risk associated with the P3203ACMC. Additionally, P3203ACMCL meets ROHS3 compliance requirements, whereas the P3203ACMC is non-compliant. For new designs and production continuity, P3203ACMCL is the appropriate choice. Existing designs currently using P3203ACMC can transition to P3203ACMCL without circuit modification, as all electrical and mechanical parameters remain identical.

Frequently Asked Questions (FAQ)

Q: Can P3203ACMCL be used as a direct replacement for P3203ACMC in existing circuits?

A: Yes. All electrical parameters (voltage ratings, current ratings, hold current) and mechanical specifications (package type, mounting configuration) are identical between the two parts. Direct substitution is possible without circuit redesign.

Q: What is the primary difference between P3203ACMC and P3203ACMCL?

A: The P3203ACMCL is the active production equivalent of the obsolete P3203ACMC. Both parts are electrically and mechanically identical. P3203ACMCL offers ROHS3 compliance, whereas P3203ACMC is non-compliant.

Q: Are there any packaging differences between these parts?

A: No. Both parts use identical 3-SIP TO-220 Modified through-hole packaging. PCB layout and mounting procedures remain unchanged.

Q: Why is P3203ACMC marked as obsolete?

A: Littelfuse Inc. has transitioned production to the P3203ACMCL variant, which maintains full electrical and mechanical compatibility while meeting current compliance standards.

Q: Can I mix P3203ACMC and P3203ACMCL in the same production batch?

A: Yes, from a functional standpoint. However, for consistency and compliance documentation, using a single part number (P3203ACMCL) across all production is recommended.