SMCJ17AHM3/H Equivalent & Substitute Parts

Part Overview

The SMCJ17AHM3/H is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications. This component provides transient overvoltage protection with a 17V reverse standoff voltage and 27.6V maximum clamping voltage. The part is currently discontinued at DiGi Electronics, making identification of equivalent alternatives essential for ongoing system support and procurement.

Substiute Parts

SMCJ17AHM3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 1044SMCJ17AHM3/H Datasheet

Current PartRFQ

SMCJ17AHM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 1143SMCJ17AHM3_A/H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMCJ17AHM3/H is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 17V
• Voltage - Clamping (Max) @ Ipp: 27.6V
• Current - Peak Pulse (10/1000µs): 54.3A
• Package / Case: DO-214AB (SMC)
• Type: Zener, Unidirectional
• Series: TransZorb®

The substitute part SMCJ17AHM3_A/H maintains identical electrical specifications and physical packaging. The primary distinction is packaging format: the original part uses standard packaging, while the substitute is supplied in Tape & Reel (TR) format. Both parts are manufactured by Vishay and carry the same base product number (SMCJ17).

Parameter Comparison

Engineering Selection Recommendations

The SMCJ17AHM3_A/H is a direct functional equivalent to the SMCJ17AHM3/H. Both parts are manufactured by Vishay, carry identical electrical and thermal specifications, and meet the same automotive-grade qualification (AEC-Q101) and compliance standards (ROHS3, REACH Unaffected).

The primary consideration for selection is packaging format. The substitute part is supplied in Tape & Reel (TR) format, which is standard for high-volume manufacturing and automated assembly. If your application requires individual component packaging or has specific procurement constraints, this distinction must be evaluated against your assembly process requirements.

Both parts maintain the same DO-214AB (SMC) physical footprint and are suitable for surface mount assembly. The electrical performance, thermal characteristics, and reliability certifications are identical.

Frequently Asked Questions (FAQ)

Q: Can SMCJ17AHM3_A/H be used as a direct replacement for SMCJ17AHM3/H?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format: the substitute is supplied in Tape & Reel (TR) format rather than standard packaging. If your assembly process accommodates tape and reel components, this part is a direct substitute.

Q: What is the difference between standard packaging and Tape & Reel (TR) format?

A: Tape & Reel format is used for automated pick-and-place assembly and high-volume production. Standard packaging typically refers to bulk or individual component packaging. Both formats contain the same component with identical electrical specifications.

Q: Are both parts automotive-grade?

A: Yes. Both SMCJ17AHM3/H and SMCJ17AHM3_A/H are automotive-grade components qualified to AEC-Q101 and suitable for automotive applications.

Q: What is the significance of the discontinued status?

A: The SMCJ17AHM3/H is discontinued at DiGi Electronics. The SMCJ17AHM3_A/H remains active and available, making it the recommended choice for new procurement and ongoing system support.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited).