P2353AB Equivalent & Substitute Parts

Part Overview

The P2353AB is a three-element SIDACtor® thyristor transient voltage suppressor manufactured by Littelfuse, designed for 200V off-state operation with 250A peak pulse current capability in a TO-220 Modified package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning. The P2353ABL represents the active production equivalent with identical electrical and mechanical specifications.

Substiute Parts

P2353AB

LittelfuseIn Stock: 1010P2353AB Datasheet

Current PartRFQ

P2353ABL

Littelfuse Inc.In Stock: 2265P2353ABL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P2353AB with the P2353ABL is based on electrical and mechanical parameter equivalence across all critical specifications. The allowed substitution parameters are:

• Voltage ratings (breakover, off-state, on-state)
• Peak pulse current specifications (8/20µs and 10/1000µs)
• Hold current threshold
• Element count and capacitance values
• Package type and mounting configuration

The P2353ABL maintains identical values across all these parameters, establishing it as a direct functional equivalent. The primary distinction is product status: P2353AB is obsolete, while P2353ABL is active production.

Parameter Comparison

Engineering Selection Recommendations

The P2353ABL is the direct replacement for the obsolete P2353AB. All electrical parameters, mechanical dimensions, and functional characteristics are identical. Selection of P2353ABL is appropriate for:

• New designs requiring active production availability
• Redesigns of legacy systems using P2353AB
• Applications requiring RoHS3 compliance (P2353ABL meets this requirement; P2353AB does not)
• Procurement scenarios where obsolete component sourcing is impractical

The transition from P2353AB to P2353ABL introduces improved environmental compliance without altering circuit performance or board-level integration requirements.

Frequently Asked Questions (FAQ)

Q: Can P2353ABL be used as a direct replacement for P2353AB in existing designs?

A: Yes. All electrical specifications, including voltage ratings, current ratings, and hold current, are identical. The TO-220 Modified package and through-hole mounting configuration are unchanged. No circuit modifications are required.

Q: What is the difference between P2353AB and P2353ABL?

A: The primary differences are product status and RoHS compliance. P2353AB is obsolete and RoHS non-compliant. P2353ABL is active production and ROHS3 compliant. Electrical and mechanical specifications are identical.

Q: Are there packaging differences between these parts?

A: No. Both parts use the 3-SIP package in TO-220 Modified configuration with through-hole mounting. Footprint and board layout compatibility are maintained.

Q: Why is P2353AB listed as obsolete?

A: Littelfuse has transitioned this product line to the P2353ABL variant, which maintains full functional equivalence while meeting current RoHS3 environmental standards.

Q: What are the key electrical parameters that define substitution eligibility?

A: Breakover voltage (270V), off-state voltage (200V), on-state voltage (8V), peak pulse current (250A at 8/20µs), and hold current (150mA) must remain constant. The P2353ABL meets all these requirements.

Q: Is the capacitance specification the same?

A: Yes. Both parts specify 50pF and 75pF capacitance values, maintaining identical transient response characteristics.