TPSMB20AHE3_A/I Equivalent & Substitute Parts

Part Overview

The TPSMB20AHE3_A/I is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the PAR® series and is designed for transient voltage protection applications. The device features a 17.1V reverse standoff voltage with a 27.7V maximum clamping voltage and 21.7A peak pulse current capability. The part maintains active product status and carries automotive-grade qualification under AEC-Q101 standards. Substitute parts are identified to provide equivalent electrical performance and mechanical compatibility for applications requiring alternative sourcing or inventory management.

Substiute Parts

TPSMB20AHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1129TPSMB20AHE3_A/I Datasheet

Current PartRFQ

P6SMB20A-AU_R1_000A1

Panjit International Inc.In Stock: 1538P6SMB20A-AU_R1_000A1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPSMB20AHE3_A/I are qualified based on the following electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 17.1V
• Voltage - Breakdown (Min): 19V
• Voltage - Clamping (Max) @ Ipp: 27.7V
• Current - Peak Pulse (10/1000µs): ≥21.7A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB (surface mount)
• Unidirectional Channels: 1
• Type: Zener
• Automotive Grade with AEC-Q101 qualification
• RoHS3 Compliance

The P6SMB20A-AU_R1_000A1 manufactured by Panjit International Inc. meets these substitution criteria with equivalent voltage ratings, compatible package configuration, and matching automotive qualifications.

Parameter Comparison

Engineering Selection Recommendations

Both the TPSMB20AHE3_A/I and P6SMB20A-AU_R1_000A1 maintain active product status and carry automotive-grade classification with AEC-Q101 qualification. Both components are ROHS3 compliant and feature unlimited moisture sensitivity rating (MSL 1). The electrical parameters are equivalent across voltage ratings and power dissipation specifications. The primary difference is the operating temperature range, where the Vishay device supports -65°C to 185°C while the Panjit substitute operates within -55°C to 150°C. Component selection should be based on specific application temperature requirements and sourcing availability.

Frequently Asked Questions (FAQ)

Q: What electrical parameters determine substitution compatibility for the TPSMB20AHE3_A/I?

A: The critical parameters are reverse standoff voltage (17.1V), breakdown voltage minimum (19V), clamping voltage maximum (27.7V), and peak pulse current (minimum 21.7A). All substitute parts must match these specifications within the defined tolerances.

Q: Is the P6SMB20A-AU_R1_000A1 a direct mechanical replacement?

A: Yes. Both components use the DO-214AA (SMB) surface mount package, enabling direct PCB footprint compatibility without layout modifications.

Q: What is the significance of the operating temperature range difference?

A: The TPSMB20AHE3_A/I supports -65°C to 185°C, while the P6SMB20A-AU_R1_000A1 operates within -55°C to 150°C. Applications requiring operation below -55°C or above 150°C must use the Vishay device.

Q: Are both parts automotive qualified?

A: Yes. Both components carry automotive-grade classification and AEC-Q101 qualification, meeting automotive industry reliability standards.

Q: What is the peak pulse current difference between the two parts?

A: The Vishay device is rated at 21.7A while the Panjit substitute is rated at 22A. The Panjit part exceeds the minimum requirement and is functionally equivalent for this parameter.