TPC6.8AHM3/86A Equivalent & Substitute Parts

Part Overview

The TPC6.8AHM3/86A is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for transient overvoltage protection in automotive applications. This component features a 5.8V reverse standoff voltage with a 10.5V maximum clamping voltage and 143A peak pulse current capability in a surface mount TO-277A package. The part is currently classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations.

Substiute Parts

TPC6.8AHM3/86A

Vishay General Semiconductor - Diodes DivisionIn Stock: 1134TPC6.8AHM3/86A Datasheet

Current PartRFQ

TPC6.8AHM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 1065TPC6.8AHM3_A/H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPC6.8AHM3/86A is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 5.8V
• Voltage - Breakdown (Min): 6.45V
• Voltage - Clamping (Max) @ Ipp: 10.5V
• Current - Peak Pulse (10/1000µs): 143A
• Power - Peak Pulse: 1500W
• Type: Zener, Unidirectional
• Unidirectional Channels: 1
• Package / Case: TO-277, 3-PowerDFN
• Mounting Type: Surface Mount
• Operating Temperature Range: -65°C to 185°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The substitute part TPC6.8AHM3_A/H meets all electrical and mechanical requirements for direct substitution. The primary distinction is packaging format: the substitute is supplied in Tape & Reel (TR) configuration versus the original part's unspecified packaging, and the substitute maintains Active product status.

Parameter Comparison

Engineering Selection Recommendations

The TPC6.8AHM3_A/H is a direct electrical and mechanical equivalent to the TPC6.8AHM3/86A. Both components share identical electrical specifications, automotive-grade qualification (AEC-Q101), and ROHS3 compliance status. The substitute part maintains active product status, ensuring continued availability and manufacturing support.

The primary consideration for selection is packaging format. The substitute is supplied in Tape & Reel (TR) configuration, which is standard for high-volume production environments. If the original packaging format is a critical requirement for your application, this distinction must be evaluated against your procurement and assembly processes.

Both parts are suitable for automotive transient voltage suppression applications requiring 5.8V standoff protection with 143A peak pulse current handling capability.

Frequently Asked Questions (FAQ)

Q: Can TPC6.8AHM3_A/H be used as a direct replacement for TPC6.8AHM3/86A?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including voltage ratings, current handling, temperature range, package type, and automotive qualification. The substitute maintains the same TO-277 surface mount package and AEC-Q101 certification.

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

A: The primary difference is product status and packaging format. The TPC6.8AHM3/86A is obsolete, while TPC6.8AHM3_A/H is active. The substitute is supplied in Tape & Reel (TR) format, which is standard for production assembly. Both parts share identical electrical and mechanical specifications.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist from an electrical or mechanical standpoint. Both components are unidirectional TVS diodes with identical voltage clamping characteristics, peak pulse current ratings, and thermal operating ranges. PCB layout and thermal management considerations remain unchanged.

Q: Does the Tape & Reel packaging affect circuit performance?

A: No. Tape & Reel packaging is a supply and handling format only. It does not affect the electrical performance, reliability, or functional characteristics of the component once assembled onto the PCB.

Q: Are both parts qualified for automotive applications?

A: Yes. Both the TPC6.8AHM3/86A and TPC6.8AHM3_A/H carry automotive-grade classification and AEC-Q101 qualification, meeting automotive industry reliability and quality standards.