TPC9.1AHM3/86A Equivalent & Substitute Parts

Part Overview

The TPC9.1AHM3/86A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for transient overvoltage protection in automotive applications, featuring a 7.78V reverse standoff voltage and 13.4V maximum clamping voltage. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing production and maintenance requirements. Substitute parts must maintain identical electrical performance characteristics and automotive-grade qualification to ensure system reliability.

Substiute Parts

TPC9.1AHM3/86A

Vishay General Semiconductor - Diodes DivisionIn Stock: 968TPC9.1AHM3/86A Datasheet

Current PartRFQ

TPC9.1AHM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 874TPC9.1AHM3_A/H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPC9.1AHM3/86A is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 7.78V (Typ)
• Voltage - Breakdown: 8.65V (Min)
• Voltage - Clamping: 13.4V (Max) @ Ipp
• Current - Peak Pulse: 112A (10/1000µs)
• Power - Peak Pulse: 1500W
• Operating Temperature Range: -65°C to 185°C (TJ)
• Package / Case: TO-277, 3-PowerDFN
• Mounting Type: Surface Mount
• Grade: Automotive
• Qualification: AEC-Q101

The substitute part TPC9.1AHM3_A/H maintains identical electrical specifications and automotive qualification. The primary distinction is product status (Active vs. Obsolete) and packaging configuration (Tape & Reel vs. standard packaging).

Parameter Comparison

Engineering Selection Recommendations

The TPC9.1AHM3_A/H is a direct functional equivalent to the TPC9.1AHM3/86A. Both parts share identical electrical specifications, automotive-grade classification, and AEC-Q101 qualification. The substitute part maintains full compatibility for transient voltage suppression applications requiring 7.78V standoff protection with 112A peak pulse current handling.

Selection of TPC9.1AHM3_A/H is supported by its Active product status, ensuring continued availability and manufacturing support. Both parts comply with ROHS3 and REACH requirements, with MSL 1 rating indicating unlimited shelf life under standard storage conditions.

The packaging difference (Tape & Reel for the substitute) reflects standard distribution formats and does not affect electrical or mechanical compatibility. Component-level performance in circuit applications remains identical.

Frequently Asked Questions (FAQ)

Q: Can TPC9.1AHM3_A/H replace TPC9.1AHM3/86A in existing designs?

A: Yes. Both parts are electrically identical with matching voltage ratings (7.78V standoff, 13.4V clamping), current handling (112A peak pulse), and thermal specifications (-65°C to 185°C). Both carry AEC-Q101 automotive qualification and ROHS3 compliance.

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

A: The primary differences are product status (Obsolete vs. Active) and packaging format (standard vs. Tape & Reel). Electrical performance and mechanical compatibility are identical.

Q: Are the package dimensions identical?

A: Yes. Both parts use TO-277, 3-PowerDFN surface mount packaging with identical mechanical specifications.

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

A: No. Tape & Reel is a distribution and handling format. Once the component is removed and soldered into the circuit, performance is identical to standard packaging.

Q: Are both parts suitable for automotive applications?

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

Q: What is the MSL rating, and does it matter?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity limitations. Standard storage conditions apply without time-based restrictions.