SMBJ24AHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ24AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for telecom applications requiring transient overvoltage protection. This component features a 24V reverse standoff voltage with a 38.9V maximum clamping voltage and 15.4A peak pulse current capability in a surface mount DO-214AA (SMB) package. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

SMBJ24AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1027SMBJ24AHM3_A/I Datasheet

Current PartRFQ

SMBJ24AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 771SMBJ24AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ24AHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 24V (nominal)
• Voltage - Breakdown (Min): 26.7V
• Voltage - Clamping (Max) @ Ipp: 38.9V
• Current - Peak Pulse (10/1000µs): 15.4A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Type: Unidirectional Zener
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Automotive Grade: AEC-Q101 qualified
• RoHS Compliance: ROHS3 Compliant

The SMBJ24AHM3_B/I is identified as the manufacturer-recommended substitute, maintaining identical electrical specifications and package configuration while differing only in packaging format (Tape & Reel) and product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The SMBJ24AHM3_B/I is the direct functional equivalent for the obsolete SMBJ24AHM3_A/I. Both components are manufactured by Vishay and maintain identical electrical performance specifications, thermal operating range, and automotive-grade AEC-Q101 qualification. The primary distinction is product lifecycle status: the SMBJ24AHM3_B/I is currently in active production, ensuring long-term availability and supply chain continuity.

Both parts satisfy ROHS3 compliance and REACH regulatory requirements. The packaging format difference (bulk versus Tape & Reel) does not affect electrical or mechanical compatibility; selection between these formats depends on procurement and assembly process requirements.

Frequently Asked Questions (FAQ)

Q: Can SMBJ24AHM3_B/I be used as a direct replacement for SMBJ24AHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical, with matching voltage ratings (24V standoff, 26.7V breakdown minimum, 38.9V clamping maximum), current specifications (15.4A peak pulse), power dissipation (600W), package configuration (DO-214AA SMB), and thermal operating range (-55°C to 150°C). The SMBJ24AHM3_B/I is the manufacturer-recommended active production equivalent.

Q: What is the significance of the packaging format difference?

A: The SMBJ24AHM3_A/I is supplied in bulk packaging, while the SMBJ24AHM3_B/I is supplied in Tape & Reel format. This difference affects procurement logistics and automated assembly compatibility but does not alter component electrical performance or physical dimensions. Selection depends on manufacturing process requirements.

Q: Are both parts automotive-qualified?

A: Yes. Both SMBJ24AHM3_A/I and SMBJ24AHM3_B/I carry automotive-grade classification with AEC-Q101 qualification, meeting automotive industry reliability and quality standards.

Q: Do regulatory compliance requirements differ between these parts?

A: No. Both components are ROHS3 compliant and REACH unaffected, satisfying equivalent environmental and regulatory requirements.

Q: Why is the SMBJ24AHM3_A/I classified as obsolete?

A: Product lifecycle management by the manufacturer has transitioned this part number to obsolete status. The SMBJ24AHM3_B/I remains in active production, providing continued design support and component availability.