TPC20AHM3/86A Equivalent & Substitute Parts

Part Overview

The TPC20AHM3/86A is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for surface mount applications in the TO-277A (SMPC) package. This component provides transient voltage protection with a 17.1V reverse standoff voltage and 27.7V maximum clamping voltage at peak pulse current of 54.2A. The part is qualified to AEC-Q101 automotive standards and complies with ROHS3 and REACH requirements.

The TPC20AHM3/86A is currently listed as obsolete. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications requiring this specific voltage protection profile.

Substiute Parts

TPC20AHM3/86A

Vishay General Semiconductor - Diodes DivisionIn Stock: 1019TPC20AHM3/86A Datasheet

Current PartRFQ

TPC20AHM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 1046TPC20AHM3_A/H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPC20AHM3/86A is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 17.1V
• Voltage - Breakdown (Min): 19V
• Voltage - Clamping (Max) @ Ipp: 27.7V
• Current - Peak Pulse (10/1000µs): 54.2A
• Power - Peak Pulse: 1500W
• 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 TPC20AHM3_A/H maintains identical electrical and mechanical specifications while differing only in packaging format (Tape & Reel) and product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The TPC20AHM3_A/H is a direct functional equivalent to the TPC20AHM3/86A. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical specifications, thermal operating range, and automotive-grade qualifications (AEC-Q101). Both comply with ROHS3 and REACH requirements.

The primary distinction is product status: TPC20AHM3/86A is obsolete, while TPC20AHM3_A/H is active. The substitute part is available in Tape & Reel packaging format, which is standard for high-volume production environments.

For new designs or production continuity, TPC20AHM3_A/H is the appropriate selection. The identical electrical and mechanical parameters ensure drop-in compatibility in existing circuit designs without modification.

Frequently Asked Questions (FAQ)

Q: Can TPC20AHM3_A/H be used as a direct replacement for TPC20AHM3/86A?

A: Yes. Both parts are electrically and mechanically identical. They share the same voltage ratings (17.1V standoff, 27.7V clamping), peak pulse current (54.2A), power dissipation (1500W), operating temperature range (-65°C to 185°C), and package configuration (TO-277, 3-PowerDFN surface mount). Both are AEC-Q101 qualified automotive-grade components.

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

A: The TPC20AHM3/86A is obsolete, while TPC20AHM3_A/H is active. The substitute part is supplied in Tape & Reel packaging format, which is standard for automated assembly processes. No circuit-level modifications are required.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical compliance status: ROHS3 compliant, REACH unaffected, and AEC-Q101 qualified. Moisture sensitivity level (MSL 1 - Unlimited) is identical for both.

Q: Is the TO-277A (SMPC) package identical between both parts?

A: Yes. Both parts use the same TO-277, 3-PowerDFN surface mount package configuration. PCB footprints and assembly processes are identical.

Q: What inventory considerations apply to these parts?

A: TPC20AHM3/86A has 912 pieces in stock (obsolete status). TPC20AHM3_A/H has 944 pieces in stock (active status). For ongoing production, TPC20AHM3_A/H is the recommended selection due to active product status and continued availability.