Littelfuse P2702AB TVS Thyristor Equivalent & Substitute Parts

Part Overview

The Littelfuse P2702AB is a dual-element SIDACtor® transient voltage suppressor thyristor designed for 120V/240V off-state voltage applications with 250A peak pulse current capability in a 3-SIP TO-220 Modified package. This component is classified as obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations. Substitute parts must maintain identical electrical performance characteristics and mechanical compatibility to ensure direct replacement without circuit redesign.

Substiute Parts

P2702AB

Littelfuse Inc.In Stock: 1072P2702AB Datasheet

Current PartRFQ

P2702ABL

Littelfuse Inc.In Stock: 1202P2702ABL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P2702AB is determined by strict equivalence across the following critical parameters:

• Voltage ratings: Breakover voltage (160V, 320V) and off-state voltage (120V, 240V) must be identical
• Current specifications: Peak pulse current (8/20µs at 250A and 10/1000µs at 80A) and hold current (150mA) must match exactly
• On-state voltage: 4V maximum
• Element configuration: Dual-element (2) design
• Capacitance characteristics: 60pF and 105pF values
• Package compatibility: 3-SIP TO-220 Modified through-hole mounting

The P2702ABL qualifies as a direct substitute based on complete electrical and mechanical parameter alignment with the P2702AB.

Parameter Comparison

Engineering Selection Recommendations

P2702ABL is the qualified substitute for P2702AB applications. Selection between these parts is determined by product status and regulatory compliance requirements:

• P2702AB: Obsolete status with RoHS non-compliant classification. Use only for legacy system maintenance where existing inventory is available and regulatory compliance is not a constraint.

• P2702ABL: Active product status with ROHS3 compliance and REACH Unaffected designation. Specified for new designs, production restocking, and systems requiring current regulatory compliance. Bulk packaging is standard for this part number.

Both parts are electrically and mechanically identical, ensuring direct pin-for-pin and footprint-compatible replacement without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can P2702ABL replace P2702AB in existing designs? A: Yes. The P2702ABL is a direct electrical and mechanical equivalent. No circuit redesign or PCB modification is required. Pin configuration, package dimensions, and all electrical parameters are identical.

Q: What is the primary difference between P2702AB and P2702ABL? A: The P2702AB is obsolete and RoHS non-compliant, while P2702ABL is an active product with ROHS3 compliance and REACH Unaffected status. Electrical performance is identical.

Q: Are there packaging differences between these part numbers? A: Both use 3-SIP TO-220 Modified through-hole packages. P2702AB is supplied in standard packaging, while P2702ABL is supplied in bulk packaging. The physical component and footprint are identical.

Q: What parameters must match for a valid substitute? A: Voltage ratings (breakover and off-state), peak pulse current specifications (8/20µs and 10/1000µs), hold current, on-state voltage, element count, capacitance values, and package type must all match exactly.

Q: Is the P2702ABL suitable for new product designs? A: Yes. The P2702ABL is an active product with current regulatory compliance certifications, making it the specified choice for new designs and production applications.