TPSMC62A Equivalent & Substitute Parts

Part Overview

The TPSMC62A 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 overvoltage protection with a 53V reverse standoff voltage and 85V maximum clamping voltage at peak pulse current. The part is actively produced, AEC-Q101 qualified for automotive applications, and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter range.

Substiute Parts

TPSMC62A

Littelfuse Inc.In Stock: 6381TPSMC62A Datasheet

Current PartRFQ

1.5SMC62A

Taiwan Semiconductor CorporationIn Stock: 124931.5SMC62A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPSMC62A is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Voltage - Reverse Standoff (Typ): 53V
• Voltage - Breakdown (Min): 58.9V
• Voltage - Clamping (Max) @ Ipp: 85V
• Power - Peak Pulse: 1500W

Mechanical Parameters (Must Match):

• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Type: Zener

Allowable Variation:

• Current - Peak Pulse (10/1000µs): ±0.5A tolerance permitted (17.9A nominal)
• Operating Temperature Range: Must encompass or equal -55°C to 150°C

The 1.5SMC62A from Taiwan Semiconductor Corporation qualifies as a direct substitute based on matching all critical electrical parameters, identical package specification, and compatible peak pulse current rating (18A, within allowable tolerance).

Parameter Comparison

Engineering Selection Recommendations

The 1.5SMC62A is a qualified substitute for the TPSMC62A based on the following criteria:

Compliance & Certification:

• Both parts maintain ROHS3 compliance and REACH unaffected status
• Both parts are actively produced with confirmed inventory availability
• Both parts share identical MSL rating (1 - Unlimited)

Electrical & Mechanical Compatibility:

• All critical voltage parameters match exactly (53V standoff, 58.9V breakdown, 85V clamping)
• Peak pulse power rating is identical at 1500W
• Peak pulse current differs by only 0.1A (17.9A vs 18A), within standard manufacturing tolerance
• Operating temperature range is identical (-55°C to 150°C)
• Package and mounting specifications are identical (DO-214AB, SMC, surface mount)

Qualification Difference:

• TPSMC62A carries AEC-Q101 automotive qualification
• 1.5SMC62A does not list AEC-Q101 qualification in provided specifications

Selection between these parts should be based on application requirements. For automotive applications requiring AEC-Q101 qualification, the TPSMC62A is the specified choice. For non-automotive applications or where automotive qualification is not mandated, the 1.5SMC62A provides equivalent electrical and mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can the 1.5SMC62A replace the TPSMC62A in all applications?

A: The 1.5SMC62A provides equivalent electrical performance and mechanical compatibility. However, if your application requires AEC-Q101 automotive qualification, the TPSMC62A is the appropriate choice. For non-automotive applications, substitution is valid.

Q: What is the significance of the 0.1A difference in peak pulse current (17.9A vs 18A)?

A: This difference falls within standard manufacturing tolerance for TVS diodes and does not affect functional compatibility. Both ratings support the same 1500W peak pulse power specification.

Q: Are the DO-214AB and SMC package designations interchangeable?

A: Yes. DO-214AB is the industry standard package designation, and SMC is the supplier-specific designation for the same physical package. Both terms refer to the identical surface mount package used by both the TPSMC62A and 1.5SMC62A.

Q: What does MSL 1 (Unlimited) mean for storage and handling?

A: MSL 1 indicates the lowest moisture sensitivity level. These components have unlimited shelf life under normal storage conditions and do not require special moisture control during handling or storage.

Q: Why is AEC-Q101 qualification important?

A: AEC-Q101 is the automotive electronics council qualification standard for discrete semiconductors. It certifies that components meet automotive industry reliability and quality requirements. If your application is automotive or subject to automotive supply chain requirements, AEC-Q101 qualification is mandatory.

Q: Can I use the 1.5SMC62A in a design originally specified for TPSMC62A if AEC-Q101 is not required?

A: Yes. The electrical and mechanical parameters are equivalent, and both parts are ROHS3 and REACH compliant. Substitution is valid for non-automotive applications where AEC-Q101 qualification is not a requirement.