SMBJ33CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ33CAHM3_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 provides 33V reverse standoff protection with a 53.3V maximum clamping voltage. The device is designed for telecom applications requiring transient overvoltage protection.

The SMBJ33CAHM3_A/I carries an Obsolete product status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications currently utilizing this component.

Substiute Parts

SMBJ33CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 812SMBJ33CAHM3_A/I Datasheet

Current PartRFQ

SMBJ33CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 912SMBJ33CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ33CAHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 33V
• Voltage - Breakdown (Min): 36.7V
• Voltage - Clamping (Max) @ Ipp: 53.3V
• Current - Peak Pulse (10/1000µs): 11.3A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Bidirectional Channels: 1
• Type: Zener
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Automotive Grade and AEC-Q101 Qualification

The substitute part SMBJ33CAHM3_B/I maintains identical electrical specifications and mechanical compatibility. The primary distinction is product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ33CAHM3_B/I is the direct substitute for the obsolete SMBJ33CAHM3_A/I. Both components are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical and mechanical specifications. The substitute part maintains Active product status, ensuring long-term availability and supply chain continuity.

Both parts carry Automotive grade classification and AEC-Q101 qualification, confirming suitability for automotive and high-reliability applications. Compliance with ROHS3 and REACH requirements is maintained across both variants. The electrical performance, including voltage ratings, clamping characteristics, and peak pulse current handling, is identical between the two parts.

Frequently Asked Questions (FAQ)

Q: Can SMBJ33CAHM3_B/I be used as a direct replacement for SMBJ33CAHM3_A/I?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical voltage ratings (33V reverse standoff, 53.3V clamping), current handling (11.3A peak pulse), power dissipation (600W), package configuration (DO-214AA SMB), and operating temperature range (-55°C to 150°C). Both maintain Automotive grade and AEC-Q101 qualification.

Q: What is the difference between SMBJ33CAHM3_A/I and SMBJ33CAHM3_B/I?

A: The primary difference is product status. SMBJ33CAHM3_A/I is Obsolete, while SMBJ33CAHM3_B/I is Active. The substitute part is available in Tape & Reel packaging. All electrical specifications and mechanical compatibility remain identical.

Q: Are there any compatibility concerns when switching from SMBJ33CAHM3_A/I to SMBJ33CAHM3_B/I?

A: No compatibility concerns exist. Both parts use the DO-214AA (SMB) surface mount package with identical pinout and footprint. PCB layout and assembly processes require no modification.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both SMBJ33CAHM3_A/I and SMBJ33CAHM3_B/I carry Automotive grade classification and AEC-Q101 qualification, confirming compliance with automotive reliability and quality standards.

Q: What is the moisture sensitivity level for these components?

A: SMBJ33CAHM3_A/I has MSL 1 (Unlimited). This indicates minimal moisture sensitivity and no special storage or handling requirements beyond standard component handling practices.