P2103AB Equivalent & Substitute Parts

Part Overview

The P2103AB is a three-element Transient Voltage Suppressor (TVS) thyristor manufactured by Littelfuse Inc. under the SIDACtor® series. This component is designed for overvoltage protection applications requiring 170V off-state voltage rating and 250A peak pulse current capability in a 3-SIP through-hole package configuration. The P2103AB is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

P2103AB

Littelfuse Inc.In Stock: 879P2103AB Datasheet

Current PartRFQ

P2103ABL

Littelfuse Inc.In Stock: 5196P2103ABL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P2103AB is determined by exact equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications for voltage ratings (breakover, off-state, and on-state), current handling capabilities (peak pulse at both 8/20µs and 10/1000µs intervals, and hold current), element count, capacitance values, and physical package configuration.

The P2103ABL qualifies as a direct substitute based on complete parameter alignment across all specified electrical characteristics and mechanical form factor. Both parts share identical voltage ratings, current ratings, element configuration, and package type. The primary distinction between these parts is product status and packaging format, with P2103ABL currently in active production status and available in bulk packaging, whereas P2103AB is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The P2103ABL is the direct equivalent substitute for the obsolete P2103AB. Selection of P2103ABL is supported by the following factors:

Complete electrical parameter equivalence across all voltage and current specifications ensures functional interchangeability in existing circuit designs without modification to PCB layouts or component footprints.

P2103ABL maintains active product status with established supply chain availability, addressing the obsolescence constraint of the original P2103AB. Current inventory levels (5100 pieces) provide adequate supply for production requirements.

P2103ABL achieves ROHS3 compliance status, whereas P2103AB is non-compliant. This compliance improvement aligns with current regulatory requirements for electronic component procurement.

Both parts are manufactured by Littelfuse Inc. within the SIDACtor® series, ensuring consistent design heritage and performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can P2103ABL be used as a direct replacement for P2103AB in existing designs?

A: Yes. P2103ABL provides complete electrical and mechanical equivalence to P2103AB. All voltage ratings, current ratings, element configuration, and package specifications are identical. No circuit modifications or PCB redesign is required.

Q: What is the primary reason for substituting P2103AB with P2103ABL?

A: P2103AB is classified as obsolete. P2103ABL is the active production equivalent from the same manufacturer, ensuring continued availability and supply chain support.

Q: Are there any compliance differences between P2103AB and P2103ABL?

A: Yes. P2103ABL is ROHS3 compliant, while P2103AB is non-compliant. P2103ABL also carries REACH Unaffected status. These compliance improvements make P2103ABL suitable for applications with regulatory requirements.

Q: Do the packaging formats differ between these parts?

A: Both parts use identical 3-SIP through-hole package configuration with TO-220 Modified supplier device package. The primary packaging difference is that P2103AB is supplied in standard packaging while P2103ABL is available in bulk format.

Q: Are the electrical characteristics identical between P2103AB and P2103ABL?

A: Yes. Both parts share identical specifications for breakover voltage (250V), off-state voltage (170V), on-state voltage (8V), peak pulse current ratings (250A at 8/20µs and 80A at 10/1000µs), hold current (150mA), capacitance values (55pF and 85pF), and element count (3).