TPSMC56A Equivalent & Substitute Parts

Part Overview

The TPSMC56A is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for surface mount applications in the DO-214AB (SMC) package. This component provides transient voltage protection with a 47.8V reverse standoff voltage and 77V maximum clamping voltage at peak pulse current. The part is active in production status with AEC-Q101 automotive qualification and ROHS3 compliance. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring identical electrical and mechanical specifications.

Substiute Parts

TPSMC56A

Littelfuse Inc.In Stock: 1114TPSMC56A Datasheet

Current PartRFQ

1.5SMC56A

Taiwan Semiconductor CorporationIn Stock: 22771.5SMC56A Datasheet

DirectRFQ

SMCJ1.5KE56A-TP

Micro Commercial CoIn Stock: 1526SMCJ1.5KE56A-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPSMC56A are qualified based on the following critical parameters that must remain constant:

• Voltage - Reverse Standoff (Typ): 47.8V
• Voltage - Breakdown (Min): 53.2V
• Voltage - Clamping (Max) @ Ipp: 77V
• Power - Peak Pulse: 1500W
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1

The identified substitute parts maintain these electrical and mechanical specifications within acceptable tolerances for direct replacement in circuit applications. Current - Peak Pulse values of 19.7A to 20A are functionally equivalent for this product category.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status and ROHS3 compliance, supporting long-term availability and regulatory requirements. The TPSMC56A carries AEC-Q101 automotive qualification, establishing its suitability for automotive-grade applications. The 1.5SMC56A and SMCJ1.5KE56A-TP are functionally equivalent alternatives with identical critical electrical parameters and package specifications.

Selection between these parts should be based on:

• Availability and lead time requirements
• Supplier qualification and procurement agreements
• Operating temperature range requirements (TPSMC56A and 1.5SMC56A: -55°C to 150°C; SMCJ1.5KE56A-TP: -55°C to 175°C)
• Application-specific certifications or compliance mandates

Frequently Asked Questions (FAQ)

Q: Can the 1.5SMC56A replace the TPSMC56A in all applications?

A: Yes. The 1.5SMC56A maintains identical voltage specifications (47.8V standoff, 77V clamping), power rating (1500W), and package configuration (DO-214AB, SMC). The 20A peak pulse current is functionally equivalent to the 19.7A specification. Both parts are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between SMCJ1.5KE56A-TP and TPSMC56A?

A: Both parts share identical electrical specifications and DO-214AB package. The primary difference is operating temperature range: SMCJ1.5KE56A-TP extends to 175°C versus 150°C for TPSMC56A. The TPSMC56A includes AEC-Q101 automotive qualification.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the DO-214AB (SMC) surface mount package with identical pinout and footprint, enabling direct PCB substitution without layout modifications.

Q: Do these parts require different handling or storage procedures?

A: No. All three parts carry MSL 1 (Unlimited) moisture sensitivity rating, requiring standard ESD precautions but no special moisture-controlled storage.

Q: Which part should be selected for automotive applications?

A: The TPSMC56A is qualified to AEC-Q101 automotive standards. The 1.5SMC56A and SMCJ1.5KE56A-TP are suitable for general-purpose and telecom applications respectively, but lack explicit automotive qualification.