TPC18AHM3/86A Equivalent & Substitute Parts

Part Overview

The TPC18AHM3/86A 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 and industrial applications, featuring a 15.3V reverse standoff voltage and 25.2V maximum clamping voltage. The part is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement.

Substiute Parts

TPC18AHM3/86A

Vishay General Semiconductor - Diodes DivisionIn Stock: 59441TPC18AHM3/86A Datasheet

Current PartRFQ

TPC18AHM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 758TPC18AHM3_A/H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPC18AHM3/86A is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 15.3V
• Voltage - Breakdown (Min): 17.1V
• Voltage - Clamping (Max) @ Ipp: 25.2V
• Current - Peak Pulse (10/1000µs): 59.5A
• Power - Peak Pulse: 1500W
• Unidirectional Channels: 1
• Type: Zener

Mechanical & Compliance Equivalence Criteria:

• Mounting Type: Surface Mount
• Package / Case: TO-277, 3-PowerDFN
• Supplier Device Package: TO-277A (SMPC)
• Operating Temperature Range: -65°C to 185°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The substitute part TPC18AHM3_A/H maintains identical electrical performance and mechanical compatibility while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The TPC18AHM3_A/H is a direct functional equivalent to the TPC18AHM3/86A. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical specifications, thermal operating range, and mechanical package configuration. The substitute part maintains full compliance with AEC-Q101 automotive qualification and ROHS3 requirements.

The primary distinction is product status: the TPC18AHM3/86A is obsolete, while the TPC18AHM3_A/H is active. The substitute part is supplied in Tape & Reel (TR) packaging, which is standard for production environments, whereas the main part was available in bulk packaging.

For new designs or ongoing production requiring this TVS diode specification, the TPC18AHM3_A/H is the appropriate selection based on active availability and identical performance characteristics.

Frequently Asked Questions (FAQ)

Q: Are TPC18AHM3/86A and TPC18AHM3_A/H electrically interchangeable?

A: Yes. Both parts are identical in electrical performance, including reverse standoff voltage (15.3V), breakdown voltage (17.1V), clamping voltage (25.2V), peak pulse current (59.5A), and peak pulse power (1500W).

Q: Can TPC18AHM3_A/H be used as a direct replacement in existing designs?

A: Yes. The substitute part is mechanically and electrically equivalent. Both use the same TO-277A (SMPC) package and surface mount configuration. No circuit modifications are required.

Q: What is the difference in packaging between these parts?

A: The TPC18AHM3/86A was supplied in bulk packaging. The TPC18AHM3_A/H is supplied in Tape & Reel (TR) format, which is standard for automated assembly and production environments.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the TPC18AHM3/86A and TPC18AHM3_A/H are AEC-Q101 qualified and rated for automotive applications with an operating temperature range of -65°C to 185°C (TJ).

Q: Why is the TPC18AHM3/86A listed as obsolete?

A: The TPC18AHM3/86A has been discontinued by the manufacturer. The TPC18AHM3_A/H is the active equivalent part currently available for procurement.

Q: Are there any compliance differences between the two parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating.