SM6S14AHE3/2D Equivalent & Substitute Parts

Part Overview

The SM6S14AHE3/2D 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 14V reverse standoff voltage with a 23.2V maximum clamping voltage and 198A peak pulse current capability in a surface mount DO-218AB package. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production and field service applications.

Substiute Parts

SM6S14AHE3/2D

Vishay General Semiconductor - Diodes DivisionIn Stock: 12217SM6S14AHE3/2D Datasheet

Current PartRFQ

SM6S14AHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 4262SM6S14AHE3_A/I Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SM6S14AHE3/2D is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 14V
• Voltage - Breakdown (Min): 15.6V
• Voltage - Clamping (Max) @ Ipp: 23.2V
• Current - Peak Pulse (10/1000µs): 198A
• Power - Peak Pulse: 4600W
• Package / Case: DO-218AB
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101
• Type: Zener
• Unidirectional Channels: 1

The substitute part SM6S14AHE3_A/I maintains identical electrical and mechanical specifications while differing only in product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. standard packaging). This part shares the same base product number (SM6S14) and manufacturer lineage, confirming functional and pin-level compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SM6S14AHE3_A/I is a direct functional equivalent to the SM6S14AHE3/2D. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical performance specifications, thermal operating range, and automotive-grade qualification (AEC-Q101). The substitute part maintains ROHS3 compliance and unlimited moisture sensitivity rating.

The primary distinction is product lifecycle status: the main part is obsolete while the substitute is active. For new designs, production builds, and field service applications requiring long-term component availability, the SM6S14AHE3_A/I is the appropriate selection. The substitute is supplied in Tape & Reel packaging format, which is standard for high-volume manufacturing operations.

Both parts are surface mount devices in DO-218AB package configuration and are suitable for identical PCB layouts and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can SM6S14AHE3_A/I be used as a direct replacement for SM6S14AHE3/2D?

A: Yes. Both parts are electrically and mechanically identical. They share the same voltage ratings (14V standoff, 23.2V clamping), current handling (198A peak pulse), thermal range (-55°C to 175°C), package type (DO-218AB), and automotive qualification (AEC-Q101). The substitute is the active production equivalent.

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

A: The SM6S14AHE3/2D is obsolete, while SM6S14AHE3_A/I is an active part. The substitute uses Tape & Reel packaging, which is standard for manufacturing. All electrical and mechanical specifications are identical.

Q: Are there any PCB layout or assembly considerations when switching to the substitute?

A: No. Both parts use the same DO-218AB surface mount package and have identical pin configurations. Existing PCB designs require no modification.

Q: Do both parts meet automotive compliance requirements?

A: Yes. Both are automotive-grade components qualified to AEC-Q101 and are ROHS3 compliant with unlimited moisture sensitivity (MSL 1).

Q: What is the base product number relationship?

A: Both parts share the base product number SM6S14, confirming they are part of the same product family with identical core specifications.