SMBJ7.0CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ7.0CAHM3_A/I is a bidirectional transient voltage suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This surface mount component is designed for telecom applications requiring transient overvoltage protection with a 7V reverse standoff voltage and 12V maximum clamping voltage at peak pulse current. The part is currently listed as obsolete, making identification of equivalent and substitute components essential for ongoing system support and new design implementations.

Substiute Parts

SMBJ7.0CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 774SMBJ7.0CAHM3_A/I Datasheet

Current PartRFQ

SMBJ7.0CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 879SMBJ7.0CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMBJ7.0CAHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 7V
• Voltage - Breakdown (Min): 7.78V
• Voltage - Clamping (Max) @ Ipp: 12V
• Current - Peak Pulse (10/1000µs): 50A
• Power - Peak Pulse: 600W
• Bidirectional Channels: 1
• Package / Case: DO-214AA, SMB
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Type: Zener
• Grade: Automotive
• Qualification: AEC-Q101

The SMBJ7.0CAHM3_B/I is identified as the manufacturer-recommended substitute. This part maintains identical electrical specifications and mechanical compatibility while differing only in packaging format (Tape & Reel versus bulk) and product status (Active versus Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The SMBJ7.0CAHM3_B/I is the direct substitute for the obsolete SMBJ7.0CAHM3_A/I. Both components are manufactured by Vishay and maintain identical electrical and mechanical specifications. The substitute part carries Active product status, ensuring continued availability and manufacturing support. Both parts meet 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 involves no design changes or circuit modifications.

Frequently Asked Questions (FAQ)

Q: Can SMBJ7.0CAHM3_B/I be used as a direct replacement for SMBJ7.0CAHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical. The primary difference is product status (Active versus Obsolete) and packaging format (Tape & Reel versus bulk). No circuit modifications are required.

Q: What is the difference between the packaging designations A/I and B/I?

A: The suffix designates the packaging format and product lifecycle status. SMBJ7.0CAHM3_A/I is obsolete, while SMBJ7.0CAHM3_B/I is the active equivalent supplied in Tape & Reel packaging. Both use the same DO-214AA (SMB) component package.

Q: Are both parts qualified for automotive applications?

A: Yes. Both SMBJ7.0CAHM3_A/I and SMBJ7.0CAHM3_B/I carry Automotive grade classification and AEC-Q101 qualification, meeting automotive industry standards for reliability and quality.

Q: What are the critical electrical parameters for substitution?

A: Substitution is valid when the following parameters match: 7V reverse standoff voltage, 7.78V minimum breakdown voltage, 12V maximum clamping voltage, 50A peak pulse current, and 600W peak pulse power rating. Both parts meet these specifications identically.

Q: Is the operating temperature range the same for both parts?

A: Yes. Both parts operate across the identical temperature range of -55°C to 150°C (junction temperature), ensuring thermal compatibility in all specified applications.