SMBJ8.0AHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ8.0AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for telecom applications requiring transient protection. This component features an 8V reverse standoff voltage with a 13.6V maximum clamping voltage and 44.1A peak pulse current capability in a surface mount DO-214AA (SMB) package. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability.

Substiute Parts

SMBJ8.0AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 676SMBJ8.0AHM3_A/I Datasheet

Current PartRFQ

SMBJ8.0AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 761SMBJ8.0AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ8.0AHM3_A/I is determined by strict equivalence across the following critical parameters:

• Unidirectional Zener TVS diode topology
• 8V reverse standoff voltage rating
• 13.6V maximum clamping voltage at peak pulse current
• 44.1A peak pulse current (10/1000µs waveform)
• 600W peak pulse power dissipation
• DO-214AA (SMB) surface mount package
• Automotive grade with AEC-Q101 qualification
• Operating temperature range of -55°C to 150°C
• ROHS3 compliance and MSL 1 rating

The SMBJ8.0AHM3_B/I is identified as the manufacturer-recommended substitute, maintaining identical electrical specifications and package configuration while offering active product status and improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ8.0AHM3_B/I is the direct equivalent for the obsolete SMBJ8.0AHM3_A/I. Both components are manufactured by Vishay within the TransZorb® series and maintain identical electrical and mechanical specifications. The substitute part carries active product status, ensuring long-term availability and supply chain continuity. Both parts satisfy automotive-grade requirements with AEC-Q101 qualification and ROHS3 compliance, making them suitable for regulated applications. The transition from the obsolete variant to the active substitute presents no functional or compliance risk for existing designs.

Frequently Asked Questions (FAQ)

Q: Can SMBJ8.0AHM3_B/I be used as a direct replacement for SMBJ8.0AHM3_A/I?

A: Yes. Both parts are identical in electrical performance, package configuration, and automotive qualification. The substitute is the manufacturer-recommended active alternative.

Q: What is the difference between the SMBJ8.0AHM3_A/I and SMBJ8.0AHM3_B/I designations?

A: The suffix letter indicates manufacturing revision. The _B/I variant is the current active production version, while _A/I is obsolete. Electrical specifications remain unchanged.

Q: Are there any package or pinout differences between these parts?

A: No. Both components use the DO-214AA (SMB) surface mount package with identical pinout and footprint compatibility.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both SMBJ8.0AHM3_A/I and SMBJ8.0AHM3_B/I carry Automotive grade classification with AEC-Q101 qualification and ROHS3 compliance.

Q: What is the operating temperature range for these TVS diodes?

A: Both parts operate across -55°C to 150°C junction temperature, suitable for automotive and industrial telecom applications.

Q: Are moisture sensitivity considerations the same for both parts?

A: Yes. Both components have MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.