TPC43AHM3/86A TVS Diode Equivalent & Substitute Parts

Part Overview

The TPC43AHM3/86A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for transient overvoltage protection in surface mount applications, featuring a 36.8V reverse standoff voltage and 59.3V clamping voltage. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing production and design continuity. The substitute part TPC43AHM3_A/H maintains identical electrical and mechanical specifications while offering active product status and improved supply availability.

Substiute Parts

TPC43AHM3/86A

Vishay General Semiconductor - Diodes DivisionIn Stock: 925TPC43AHM3/86A Datasheet

Current PartRFQ

TPC43AHM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 852TPC43AHM3_A/H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPC43AHM3/86A is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 36.8V
• Voltage - Breakdown (Min): 40.9V
• Voltage - Clamping (Max) @ Ipp: 59.3V
• Current - Peak Pulse (10/1000µs): 25.3A
• Power - Peak Pulse: 1500W
• Operating Temperature Range: -65°C to 185°C
• Package / Case: TO-277, 3-PowerDFN
• Mounting Type: Surface Mount
• Grade: Automotive
• Qualification: AEC-Q101

The substitute part TPC43AHM3_A/H is a direct equivalent, differing only in packaging format (Tape & Reel versus bulk) and product status (Active versus Obsolete). All electrical characteristics, thermal ratings, and mechanical specifications remain identical.

Parameter Comparison

Engineering Selection Recommendations

The TPC43AHM3_A/H is the direct substitute for the obsolete TPC43AHM3/86A. Selection of the active equivalent is justified by:

• Complete electrical parameter equivalence across all voltage and current ratings
• Identical thermal operating range and power dissipation capability
• Maintained automotive grade classification and AEC-Q101 qualification
• ROHS3 compliance and unlimited moisture sensitivity rating preserved
• Active product status ensuring continued availability and supply chain support

The only functional difference is packaging format: TPC43AHM3_A/H is supplied in Tape & Reel format, standard for automated assembly processes. This substitution requires no circuit redesign or thermal analysis revision.

Frequently Asked Questions (FAQ)

Q: Can TPC43AHM3_A/H be used as a direct replacement for TPC43AHM3/86A in existing designs?

A: Yes. All electrical characteristics, thermal ratings, mechanical dimensions, and compliance certifications are identical. The substitute part is pin-compatible and functionally equivalent.

Q: What is the difference between the two part numbers?

A: The primary difference is packaging format. TPC43AHM3/86A is supplied in bulk packaging, while TPC43AHM3_A/H is supplied in Tape & Reel format. Additionally, TPC43AHM3_A/H has active product status, ensuring ongoing manufacturing and supply availability.

Q: Are there any thermal or electrical performance differences?

A: No. Both parts maintain identical operating temperature range (-65°C to 185°C), peak pulse power (1500W), and all voltage specifications.

Q: Is the TO-277 surface mount package identical between both parts?

A: Yes. Both parts use the same TO-277, 3-PowerDFN surface mount package with identical mechanical specifications and PCB footprint requirements.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both TPC43AHM3/86A and TPC43AHM3_A/H are automotive grade components with AEC-Q101 qualification.

Q: What is the inventory status for each part?

A: TPC43AHM3/86A has 893 pieces in stock (obsolete status). TPC43AHM3_A/H has 815 pieces in stock (active status).