SMBJ24CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ24CAHM3_A/I is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AA (SMB) package and is designed for telecom applications requiring transient voltage protection. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new design implementations.

Substiute Parts

SMBJ24CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 13130SMBJ24CAHM3_A/I Datasheet

Current PartRFQ

SMBJ24CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1007SMBJ24CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ24CAHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 24V
• Voltage - Breakdown (Min): 26.7V
• Voltage - Clamping (Max) @ Ipp: 38.9V
• Current - Peak Pulse (10/1000µs): 15.4A
• Power - Peak Pulse: 600W
• Bidirectional Channels: 1
• Package / Case: DO-214AA, SMB
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The SMBJ24CAHM3_B/I is classified as a manufacturer-recommended substitute. Both parts share identical electrical performance characteristics, thermal ratings, automotive qualification, and package specifications. The primary distinction is product status: the SMBJ24CAHM3_A/I is obsolete, while the SMBJ24CAHM3_B/I maintains active production status. The packaging format differs (bulk versus Tape & Reel), but this represents a supply chain variation rather than a functional difference.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ24CAHM3_B/I is the designated substitute for the obsolete SMBJ24CAHM3_A/I. Both components maintain identical electrical specifications, thermal performance, and automotive-grade qualification (AEC-Q101). The SMBJ24CAHM3_B/I carries active product status, ensuring continued manufacturing support and supply chain availability. Both parts satisfy ROHS3 compliance and REACH regulatory requirements. The packaging difference (Tape & Reel versus bulk) does not affect functional compatibility and represents standard supply chain variation. Selection of the SMBJ24CAHM3_B/I is appropriate for new designs and replacement applications requiring 24V bidirectional TVS protection in automotive telecom circuits.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ24CAHM3_B/I be used as a direct replacement for the SMBJ24CAHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical. The SMBJ24CAHM3_B/I is the active production equivalent and is suitable for direct substitution in all applications where the SMBJ24CAHM3_A/I was specified.

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

A: The primary difference is product status. The SMBJ24CAHM3_A/I is obsolete, while the SMBJ24CAHM3_B/I is in active production. The packaging format also differs: the A/I variant uses bulk packaging, while the B/I variant uses Tape & Reel format. Electrical and thermal specifications are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical automotive-grade qualification (AEC-Q101), ROHS3 compliance, and REACH regulatory status. There are no compliance or certification differences between the two variants.

Q: Does the Tape & Reel packaging affect circuit performance?

A: No. Packaging format is a supply chain consideration only and does not affect electrical performance, thermal characteristics, or functional behavior in the circuit.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution is determined by matching voltage ratings (24V standoff, 26.7V breakdown minimum, 38.9V clamping maximum), peak pulse current (15.4A), power dissipation (600W), bidirectional channel configuration (1 channel), package type (DO-214AA SMB), operating temperature range (-55°C to 150°C), and automotive qualification (AEC-Q101).