P3203AC Equivalent & Substitute Parts

Part Overview

The P3203AC is a Transient Voltage Suppressor (TVS) thyristor manufactured by Littelfuse Inc. under the SIDACtor® series. This component is designed for overvoltage protection applications requiring 270V off-state voltage rating and 400A peak pulse current capability in a 3-SIP through-hole package configuration. The P3203AC is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

P3203AC

Littelfuse Inc.In Stock: 1793P3203AC Datasheet

Current PartRFQ

P3203ACL

Littelfuse Inc.In Stock: 1618P3203ACL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3203AC is determined by electrical and mechanical parameter equivalence within the SIDACtor® TVS thyristor product family. The critical substitution criteria are:

• Voltage ratings: Breakover voltage (350V), off-state voltage (270V), and on-state voltage (8V) must be identical
• Current specifications: Peak pulse current (8/20µs) of 400A and (10/1000µs) of 100A must match
• Hold current (Ih) of 150mA must be maintained
• Capacitance values (45pF, 70pF) must be equivalent
• Package configuration: 3-SIP through-hole mounting in TO-220 Modified case must be preserved
• Number of elements: 3-element configuration must be maintained

The P3203ACL meets all these criteria and qualifies as a direct substitute for the P3203AC.

Parameter Comparison

Engineering Selection Recommendations

The P3203ACL is the direct equivalent substitute for the P3203AC. Both components share identical electrical and mechanical specifications across all critical parameters. The primary distinction is product lifecycle status: the P3203AC is obsolete while the P3203ACL maintains active production status.

For new designs and ongoing system support, the P3203ACL is the appropriate selection. The P3203ACL additionally provides ROHS3 compliance, whereas the P3203AC is non-compliant with RoHS directives. Both components carry identical ECCN (EAR99) and HTSUS (8541.30.0080) classifications.

Frequently Asked Questions (FAQ)

Q: Can P3203ACL be used as a direct replacement for P3203AC in existing applications?

A: Yes. The P3203ACL is electrically and mechanically identical to the P3203AC across all specified parameters, including voltage ratings, current ratings, capacitance, and package configuration. Direct substitution is supported without circuit modification.

Q: What is the difference between P3203AC and P3203ACL?

A: The components are functionally equivalent. The primary differences are product status (P3203AC is obsolete; P3203ACL is active) and regulatory compliance (P3203ACL is ROHS3 compliant; P3203AC is non-compliant). Electrical and mechanical specifications are identical.

Q: Are there packaging differences between these parts?

A: No. Both the P3203AC and P3203ACL use identical 3-SIP through-hole packaging in TO-220 Modified case configuration. PCB layout and mounting procedures remain unchanged.

Q: What certifications apply to the P3203ACL?

A: The P3203ACL is ROHS3 compliant and REACH unaffected. Both components are classified under ECCN EAR99 and HTSUS 8541.30.0080.

Q: Is the P3203ACL available in stock?

A: Yes. The P3203ACL is in active production with 1600 pieces available as new original stock in bulk packaging.