P2103UCTP Equivalent & Substitute Parts

Part Overview

The P2103UCTP is a 170V off-state TVS thyristor from Littelfuse Inc.'s SIDACtor® series, designed for transient voltage suppression applications. This component features a 6-SMD gull wing package with 400A peak pulse current capability (8/20µs) and is rated for 3-element configuration. The part is currently classified as obsolete, making identification of compatible substitutes essential for ongoing system support and component procurement.

Substiute Parts

P2103UCTP

Littelfuse Inc.In Stock: 1096P2103UCTP Datasheet

Current PartRFQ

P2103UCLTP

LittelfuseIn Stock: 983P2103UCLTP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P2103UCTP is determined by strict equivalence across the following critical parameters:

• Voltage ratings (off-state, breakover, and on-state)
• Peak pulse current specifications (both 8/20µs and 10/1000µs ratings)
• Hold current (Ih) threshold
• Element count and capacitance values
• Physical package configuration (6-SMD, gull wing)
• Surface mount compatibility

The P2103UCLTP qualifies as a direct substitute based on identical electrical specifications and package geometry. The primary distinction between these parts is product status and packaging format, not functional performance.

Parameter Comparison

Engineering Selection Recommendations

The P2103UCLTP is the direct functional equivalent to the P2103UCTP. Both components share identical electrical performance characteristics and physical package specifications. Selection between these parts should be based on the following factors:

Product Status: The P2103UCTP is obsolete, while the P2103UCLTP maintains active product status with ongoing manufacturer support and availability.

Regulatory Compliance: The P2103UCLTP is ROHS3 compliant, whereas the P2103UCTP is non-compliant. For applications subject to RoHS regulations, the P2103UCLTP is the required choice.

Availability: The P2103UCLTP is currently in stock (949 pcs) with active distribution channels. The P2103UCTP, though currently inventoried (1018 pcs), is obsolete and subject to supply discontinuation.

For new designs or component replenishment, the P2103UCLTP is the appropriate selection. For legacy system maintenance where the original part number must be retained, the P2103UCLTP provides electrical and mechanical interchangeability.

Frequently Asked Questions (FAQ)

Q: Can the P2103UCLTP be used as a direct replacement for the P2103UCTP?

A: Yes. The P2103UCLTP is electrically and mechanically identical to the P2103UCTP. All voltage ratings, current specifications, element configuration, and package geometry are equivalent. The parts are interchangeable at the circuit level.

Q: What is the difference between these two part numbers?

A: The primary differences are product status and regulatory compliance. The P2103UCTP is obsolete and RoHS non-compliant. The P2103UCLTP is active and ROHS3 compliant. Electrically and physically, they are identical.

Q: Are there packaging differences between P2103UCTP and P2103UCLTP?

A: The P2103UCTP is supplied in standard packaging, while the P2103UCLTP is supplied in tube packaging. Both use the same 6-SMD gull wing package configuration. The tube packaging does not affect component performance or PCB mounting.

Q: Which part should be specified for new designs?

A: The P2103UCLTP should be specified for new designs. It is an active product with manufacturer support, ROHS3 compliance, and confirmed availability. The P2103UCTP is obsolete and should not be used for new applications.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts have identical voltage ratings (170V off-state, 250V breakover, 8V on-state), peak pulse current ratings (400A at 8/20µs, 100A at 10/1000µs), hold current (150mA), and capacitance specifications (55pF, 85pF).