TPSMA7.5HE3_A/I Equivalent & Substitute Parts

Part Overview

The TPSMA7.5HE3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for surface mount applications in the DO-214AC (SMA) package. This component operates across an automotive-grade temperature range of -65°C to 185°C and carries AEC-Q101 qualification. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

TPSMA7.5HE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 773TPSMA7.5HE3_A/I Datasheet

Current PartRFQ

TPSMA7.5AHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 950TPSMA7.5AHE3_B/I Datasheet

DirectRFQ

SMA6J6.0A-TR

STMicroelectronicsIn Stock: 2008SMA6J6.0A-TR Datasheet

MFR RecommendedRFQ

SMAJ6.0A

MDDIn Stock: 20420SMAJ6.0A Datasheet

MFR RecommendedRFQ

SMAJ6.0A-TP

Micro Commercial CoIn Stock: 5510SMAJ6.0A-TP Datasheet

MFR RecommendedRFQ

SMAJ6.0A-TR

STMicroelectronicsIn Stock: 10443SMAJ6.0A-TR Datasheet

MFR RecommendedRFQ

TV04A6V0J-G

Comchip TechnologyIn Stock: 926TV04A6V0J-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPSMA7.5HE3_A/I is determined by the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 6V nominal range (5.7V to 6.4V acceptable)
• Voltage - Clamping (Max) @ Ipp: 10.3V to 13.7V range
• Current - Peak Pulse (10/1000µs): 34.2A minimum
• Power - Peak Pulse: 400W minimum
• Package / Case: DO-214AC (SMA) surface mount only
• Type: Zener unidirectional TVS diode
• RoHS Status: ROHS3 Compliant

All identified substitute parts maintain the same package footprint, voltage class, and power rating. Differences in clamping voltage and peak pulse current specifications remain within acceptable operational margins for this product category.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TPSMA7.5AHE3_B/I

The TPSMA7.5AHE3_B/I from Vishay is the direct successor to the obsolete TPSMA7.5HE3_A/I. Both parts share identical automotive-grade qualification (AEC-Q101), extended temperature range (-65°C to 185°C), and ROHS3 compliance. Electrical parameters are closely matched with clamping voltage of 11.3V and peak pulse current of 35.4A. This part is currently in active production with 854 units in stock.

Secondary Recommendations: SMAJ6.0A-TP and TV04A6V0J-G

Both SMAJ6.0A-TP (Micro Commercial Co) and TV04A6V0J-G (Comchip Technology) provide functional equivalence with clamping voltages of 10.3V and peak pulse currents of 38.8A and 38.83A respectively. These parts operate within the 6V reverse standoff voltage class and maintain the DO-214AC package requirement. However, both are classified as general-purpose grade rather than automotive grade, and neither carries AEC-Q101 qualification. Selection of these alternatives is appropriate only for non-automotive applications or where automotive qualification is not a design requirement.

Alternative Consideration: SMA6J6.0A-TR and SMAJ6.0A-TR (STMicroelectronics)

The STMicroelectronics TRANSIL™ series parts (SMA6J6.0A-TR and SMAJ6.0A-TR) offer higher peak pulse current ratings (290A and 170A respectively at 8/20µs pulse width) and increased power dissipation (600W for SMA6J6.0A-TR). These parts are suitable for applications requiring enhanced transient protection but operate at reduced maximum temperature limits (-55°C to 175°C or -55°C to 150°C). General-purpose grade classification and absence of AEC-Q101 qualification limit applicability to automotive designs.

Frequently Asked Questions (FAQ)

Q: Can I use SMAJ6.0A-TP as a direct replacement for TPSMA7.5HE3_A/I in automotive applications?

A: SMAJ6.0A-TP shares the same DO-214AC package and operates within the 6V voltage class with comparable peak pulse current (38.8A vs. 34.2A). However, it is classified as general-purpose grade without AEC-Q101 qualification. For automotive applications requiring AEC-Q101 compliance, TPSMA7.5AHE3_B/I is the appropriate selection.

Q: What is the difference between the clamping voltage specifications across these parts?

A: Clamping voltage (Voltage - Clamping Max @ Ipp) ranges from 10.3V to 13.7V across the substitute options. The original TPSMA7.5HE3_A/I specifies 11.7V. All values remain within acceptable operational margins for 6V-class TVS diodes. Selection should be based on specific circuit protection requirements and transient energy absorption capacity.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 Compliant status, matching the original TPSMA7.5HE3_A/I specification.

Q: Does operating temperature range affect substitution compatibility?

A: The original part operates from -65°C to 185°C (TJ). Most substitute parts operate within -55°C to 175°C or -55°C to 150°C ranges. For applications requiring the full -65°C to 185°C range, TPSMA7.5AHE3_B/I is the only substitute maintaining this specification.

Q: What is the significance of the 10/1000µs vs. 8/20µs pulse width notation?

A: These notations define the test conditions for peak pulse current measurement. The original TPSMA7.5HE3_A/I uses 10/1000µs pulse width. STMicroelectronics TRANSIL™ parts specify 8/20µs pulse width, which represents a different transient profile. Both are valid for TVS diode characterization; selection depends on the actual transient waveform present in the application circuit.

Q: Is TPSMA7.5AHE3_B/I available in the same packaging options as the original part?

A: TPSMA7.5AHE3_B/I is supplied in Tape & Reel (TR) packaging. The original TPSMA7.5HE3_A/I packaging specification was not provided in the input data. Confirm packaging requirements with your procurement or design documentation before finalizing part selection.