TPSMB13A Equivalent & Substitute Parts

Part Overview

The TPSMB13A is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for surface mount applications in the DO-214AA (SMB) package. This component provides transient voltage protection with an 11.1V reverse standoff voltage and 18.2V maximum clamping voltage at peak pulse current. The part is actively produced, AEC-Q101 qualified for automotive applications, and RoHS3 compliant. Equivalent substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

TPSMB13A

Littelfuse Inc.In Stock: 148667TPSMB13A Datasheet

Current PartRFQ

P6SMB13A

Eaton - Electronics DivisionIn Stock: 23892P6SMB13A Datasheet

DirectRFQ

P6SMB13A

Eaton - Electronics DivisionIn Stock: 23892P6SMB13A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPSMB13A is determined by strict equivalence across the following critical electrical and mechanical parameters:

Voltage characteristics: Reverse standoff voltage (11.1V typical), breakdown voltage minimum (12.4V), and clamping voltage maximum at peak pulse current (18.2V) must be identical.

Current and power ratings: Peak pulse current (34.6A at 10/1000µs pulse) and peak pulse power (600W) must match exactly.

Package and mounting: Surface mount configuration in DO-214AA (SMB) package is required for mechanical and thermal compatibility.

Unidirectional topology: Single-channel Zener diode configuration must be maintained.

The P6SMB13A from Eaton - Electronics Division meets all specified electrical parameters and package requirements, establishing it as a direct functional equivalent.

Parameter Comparison

*Operating temperature range differs: TPSMB13A supports -65 to 175°C, while P6SMB13A supports -55 to 150°C. The P6SMB13A range is narrower and does not extend to the full automotive specification of the TPSMB13A.

Engineering Selection Recommendations

The P6SMB13A is electrically and mechanically equivalent to the TPSMB13A across all critical voltage, current, and power parameters. Both parts are active products with RoHS compliance and unlimited moisture sensitivity rating.

Selection between these parts should account for the following:

TPSMB13A is qualified to AEC-Q101 automotive standards and supports the extended temperature range of -65 to 175°C, making it the preferred choice for automotive and high-temperature applications requiring full specification compliance.

P6SMB13A is suitable for applications where the narrower operating temperature range (-55 to 150°C) is acceptable and automotive qualification is not required. This part is actively produced and maintains full electrical equivalence.

Both parts are surface mount in DO-214AA (SMB) package and are suitable for direct PCB substitution without layout modification.

Frequently Asked Questions (FAQ)

Q: Can P6SMB13A be used as a direct replacement for TPSMB13A in automotive applications?

A: P6SMB13A matches all electrical specifications (voltage, current, power) and package requirements. However, TPSMB13A carries AEC-Q101 automotive qualification and supports the extended temperature range (-65 to 175°C) required by automotive standards. P6SMB13A operates within -55 to 150°C. Use P6SMB13A only if your application does not require AEC-Q101 qualification or extended low-temperature operation below -55°C.

Q: Are the packages physically identical?

A: Yes. Both TPSMB13A and P6SMB13A use the DO-214AA (SMB) surface mount package. They are mechanically interchangeable on PCB layouts without modification.

Q: What are the critical parameters that must match for substitution?

A: Reverse standoff voltage (11.1V), breakdown voltage (12.4V minimum), clamping voltage (18.2V maximum), peak pulse current (34.6A), peak pulse power (600W), and unidirectional Zener topology must all be identical. Package type (DO-214AA/SMB) and surface mount configuration must also match.

Q: Do both parts have the same RoHS compliance status?

A: Both parts are RoHS compliant. TPSMB13A is RoHS3 compliant, and P6SMB13A is RoHS compliant. Both meet environmental compliance requirements.

Q: What is the moisture sensitivity level for both parts?

A: Both TPSMB13A and P6SMB13A have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.