SMBJ15CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ15CAHM3_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, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

SMBJ15CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 976SMBJ15CAHM3_A/I Datasheet

Current PartRFQ

SMBJ15CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1068SMBJ15CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ15CAHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 15V
• Voltage - Breakdown (Min): 16.7V
• Voltage - Clamping (Max) @ Ipp: 24.4V
• Current - Peak Pulse (10/1000µs): 24.6A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Bidirectional Channels: 1
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Automotive Grade: Yes
• AEC-Q101 Qualification: Yes

The SMBJ15CAHM3_B/I is the manufacturer-recommended substitute. Both parts share identical electrical specifications and are members of the same TransZorb® series. The primary distinction is product status: the _A/I variant is obsolete, while the _B/I variant maintains active production status. The _B/I variant is supplied in Tape & Reel (TR) packaging, whereas the _A/I variant packaging specification is not defined in available documentation.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ15CAHM3_B/I is the direct equivalent for the obsolete SMBJ15CAHM3_A/I. Both parts maintain identical electrical and thermal specifications, automotive-grade qualification, and AEC-Q101 certification. The _B/I variant is the active production part and is recommended for all new designs and procurement activities. Both parts comply with ROHS3 and REACH requirements, ensuring regulatory compliance across global markets.

Frequently Asked Questions (FAQ)

Q: Can SMBJ15CAHM3_B/I be used as a direct replacement for SMBJ15CAHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The _B/I variant is the active production equivalent.

Q: What is the difference between the _A/I and _B/I variants?

A: The primary difference is product status. The _A/I is obsolete; the _B/I is active. The _B/I is supplied in Tape & Reel packaging. Electrical specifications and package form factor (DO-214AA, SMB) are identical.

Q: Are there any compatibility concerns when switching from SMBJ15CAHM3_A/I to SMBJ15CAHM3_B/I?

A: No compatibility concerns exist. Both parts are pin-compatible, have identical electrical performance, and are qualified to the same automotive standards (AEC-Q101).

Q: What certifications apply to both parts?

A: Both parts are AEC-Q101 qualified, ROHS3 compliant, and REACH unaffected. Both are rated for automotive applications across the temperature range -55°C to 150°C (TJ).

Q: Is the DO-214AA (SMB) package the same for both parts?

A: Yes. Both parts use the identical DO-214AA surface mount package, ensuring PCB layout and assembly compatibility.