TPC7.5HM3/87A Equivalent & Substitute Parts

Part Overview

The TPC7.5HM3/87A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for transient overvoltage protection in automotive applications, featuring a 6.05V reverse standoff voltage and 11.7V maximum clamping voltage. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

TPC7.5HM3/87A

Vishay General Semiconductor - Diodes DivisionIn Stock: 1198TPC7.5HM3/87A Datasheet

Current PartRFQ

TPC7.5AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 797TPC7.5AHM3_A/I Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPC7.5HM3/87A is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Criteria:

• Unidirectional Zener TVS diode topology
• Reverse standoff voltage range: 6.05V nominal (tolerance band 6.4V acceptable)
• Clamping voltage maximum: 11.7V (tolerance band 11.3V acceptable)
• Peak pulse current capability: minimum 128A (133A acceptable)
• Peak pulse power dissipation: 1500W
• Operating temperature range: -65°C to 185°C
• Automotive grade classification with AEC-Q101 qualification
• Surface mount TO-277A (SMPC) package
• ROHS3 compliance and MSL 1 rating

The substitute part TPC7.5AHM3_A/I meets all substitution criteria within the allowed parameter tolerances for this product category.

Parameter Comparison

Engineering Selection Recommendations

The TPC7.5AHM3_A/I is a direct substitute for the obsolete TPC7.5HM3/87A. Both components share identical automotive grade classification and AEC-Q101 qualification status, ensuring equivalent reliability and performance in automotive transient protection applications. The substitute part maintains the same operating temperature range, package configuration, and compliance certifications (ROHS3, MSL 1).

The TPC7.5AHM3_A/I offers the advantage of active product status, ensuring long-term availability and supply chain continuity. Electrical parameters remain within acceptable tolerance bands for transient voltage suppression applications: the reverse standoff voltage variance (6.05V to 6.4V) and clamping voltage differential (11.7V to 11.3V) are within standard design margins for TVS diode selection. Peak pulse current capability is enhanced (133A versus 128A), providing additional margin for transient event suppression.

Frequently Asked Questions (FAQ)

Q: Can TPC7.5AHM3_A/I be used as a direct replacement for TPC7.5HM3/87A?

A: Yes. Both components are unidirectional Zener TVS diodes with identical package configuration (TO-277A SMPC), operating temperature range (-65°C to 185°C), and power dissipation rating (1500W). Electrical parameters fall within acceptable substitution tolerances for automotive transient protection circuits.

Q: What are the key electrical differences between these parts?

A: The reverse standoff voltage differs by 0.35V (6.05V versus 6.4V), and the clamping voltage differs by 0.4V (11.7V versus 11.3V). Peak pulse current capability increases from 128A to 133A. These variations remain within standard design margins for TVS diode applications and do not affect functional compatibility.

Q: Are both parts qualified for automotive applications?

A: Yes. Both TPC7.5HM3/87A and TPC7.5AHM3_A/I carry automotive grade classification and AEC-Q101 qualification, meeting automotive industry reliability and performance standards.

Q: What is the significance of the product status difference?

A: The TPC7.5HM3/87A is classified as obsolete, indicating discontinued production. The TPC7.5AHM3_A/I maintains active product status, ensuring ongoing availability and supply chain support for new designs and production continuity.

Q: Are the packaging and moisture sensitivity ratings identical?

A: Yes. Both parts use TO-277A (SMPC) surface mount packaging with MSL 1 (Unlimited) moisture sensitivity rating, ensuring identical handling and storage requirements.

Q: Does the packaging format differ between these parts?

A: The main part (TPC7.5HM3/87A) is supplied in standard packaging, while the substitute (TPC7.5AHM3_A/I) is supplied in Tape & Reel (TR) format. Both use identical TO-277A (SMPC) package configuration suitable for automated assembly processes.