P4202AC Equivalent & Substitute Parts

Part Overview

The P4202AC is a Transient Voltage Suppressor (TVS) thyristor manufactured by Littelfuse Inc. as part of the SIDACtor® series. This component is designed for overvoltage protection applications, featuring a 190V/380V off-state voltage rating with 400A peak pulse current capability in a 3-SIP through-hole package. The P4202AC is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

P4202AC

Littelfuse Inc.In Stock: 1080P4202AC Datasheet

Current PartRFQ

P4202ACL

Littelfuse Inc.In Stock: 2212P4202ACL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P4202AC is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications for voltage ratings (breakover and off-state), peak pulse current ratings across both standard pulse durations, holding current, element count, capacitance values, and physical package configuration. The 3-SIP through-hole mounting and TO-220 Modified package form factor are non-negotiable mechanical requirements for direct substitution.

The P4202ACL qualifies as a direct substitute based on complete parameter alignment with the P4202AC across all specified electrical characteristics and mechanical dimensions.

Parameter Comparison

Engineering Selection Recommendations

The P4202ACL is the direct functional equivalent of the P4202AC, with identical electrical performance and mechanical compatibility. The primary distinction is product lifecycle status: the P4202AC is obsolete while the P4202ACL maintains active production status. Additionally, the P4202ACL meets ROHS3 compliance requirements, whereas the P4202AC does not. For new designs and ongoing system support where component availability is critical, the P4202ACL is the appropriate selection. Both parts share identical voltage ratings, current handling capabilities, and package specifications, ensuring seamless integration into existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the P4202ACL directly replace the P4202AC in existing applications?

A: Yes. The P4202ACL is electrically and mechanically identical to the P4202AC across all specified parameters, including voltage ratings, current ratings, and package configuration. Direct substitution is supported without circuit modification.

Q: What is the significance of the product status difference between P4202AC and P4202ACL?

A: The P4202AC is classified as obsolete, indicating discontinued production. The P4202ACL maintains active production status, ensuring long-term availability for component procurement and system support.

Q: Does the RoHS compliance difference affect substitution compatibility?

A: RoHS compliance is a regulatory and supply chain consideration rather than a functional performance parameter. The P4202ACL's ROHS3 compliance makes it the preferred choice for applications subject to environmental regulations, while maintaining identical electrical and mechanical performance to the P4202AC.

Q: Are the packaging and mounting specifications identical between these parts?

A: Yes. Both the P4202AC and P4202ACL use 3-SIP through-hole packages with TO-220 Modified supplier device packaging. PCB layout and mounting procedures remain unchanged.

Q: What parameters define substitution eligibility for this TVS thyristor?

A: Substitution is determined by equivalence in voltage ratings (breakover and off-state), peak pulse current ratings (both 8/20µs and 10/1000µs durations), holding current, element count, capacitance specifications, and physical package form factor. All parameters must match exactly.