P3203AB Equivalent & Substitute Parts

Part Overview

The P3203AB 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 suppression with 250A peak pulse current capability in a 3-SIP through-hole package configuration. The P3203AB is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

P3203AB

Littelfuse Inc.In Stock: 22241P3203AB Datasheet

Current PartRFQ

P3203ABL

Littelfuse Inc.In Stock: 42627P3203ABL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3203AB is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage ratings: Breakover voltage (350V), off-state voltage (270V), and on-state voltage (8V) must match exactly
• Current specifications: Peak pulse current at 8/20µs (250A) and 10/1000µs (80A) must be identical
• Hold current (Ih): 150 mA requirement must be maintained
• Element count: 3-element configuration is mandatory
• Capacitance range: 45pF to 70pF specification must be preserved
• Package configuration: 3-SIP through-hole mounting is required for mechanical compatibility

The P3203ABL qualifies as a direct substitute based on complete electrical parameter equivalence and identical mechanical packaging. The primary distinction between these parts is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The P3203ABL is the direct equivalent substitute for the P3203AB. All electrical parameters, mechanical specifications, and functional characteristics are identical. The P3203ABL is classified as an active product with current manufacturing support, whereas the P3203AB is obsolete.

The P3203ABL carries ROHS3 compliance certification, whereas the P3203AB is non-compliant. For applications subject to RoHS regulatory requirements, the P3203ABL is the appropriate selection. For legacy system maintenance where RoHS compliance is not mandated, both parts are electrically and mechanically interchangeable.

Frequently Asked Questions (FAQ)

Q: Can the P3203ABL be used as a direct replacement for the P3203AB in existing designs?

A: Yes. The P3203ABL is electrically and mechanically identical to the P3203AB. All voltage ratings, current specifications, element count, capacitance values, and package configurations match exactly. Direct substitution is possible without circuit modification.

Q: What is the primary difference between the P3203AB and P3203ABL?

A: The P3203AB is obsolete with RoHS non-compliance status. The P3203ABL is an active product with ROHS3 compliance. Electrical and mechanical specifications are identical.

Q: Are there packaging format differences between these parts?

A: The P3203AB is supplied in standard packaging, while the P3203ABL is supplied in bulk packaging. Both use the identical 3-SIP through-hole package configuration. Bulk packaging does not affect component performance or compatibility.

Q: What parameters must match for a part to be considered a substitute for the P3203AB?

A: Substitute parts must match the following specifications: 350V breakover voltage, 270V off-state voltage, 8V on-state voltage, 250A peak pulse current (8/20µs), 80A peak pulse current (10/1000µs), 150 mA hold current, 3-element configuration, 45–70 pF capacitance range, and 3-SIP through-hole package.

Q: Is the P3203ABL suitable for new designs?

A: Yes. The P3203ABL is an active product with current manufacturing support and ROHS3 compliance, making it suitable for new design implementations requiring 270V TVS thyristor protection with 250A peak pulse current capability.