SMBJ33CA-M3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ33CA-M3/52 is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This bidirectional Zener diode operates in the 33V reverse standoff category and is designed for general-purpose transient voltage suppression in surface mount applications. The device is classified as Active product status and is fully RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory optimization, and supply chain continuity while maintaining electrical and mechanical compatibility.

Substiute Parts

SMBJ33CA-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 882SMBJ33CA-M3/52 Datasheet

Current PartRFQ

SMBJ33CA-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 6766SMBJ33CA-E3/5B Datasheet

DirectRFQ

SMBJ33CD-M3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 8348SMBJ33CD-M3/H Datasheet

DirectRFQ

SMBJ33CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 217531SMBJ33CA-E3/52 Datasheet

MFR RecommendedRFQ

1SMB33CA TR13 PBFREE

Central Semiconductor CorpIn Stock: 14541SMB33CA TR13 PBFREE Datasheet

DirectRFQ

SMBJ33CA-13-F

Diodes IncorporatedIn Stock: 35348SMBJ33CA-13-F Datasheet

DirectRFQ

SMBJ33CA-TP

Micro Commercial CoIn Stock: 15959SMBJ33CA-TP Datasheet

DirectRFQ

SMBJ33CAE3/TR13

Microchip TechnologyIn Stock: 3973SMBJ33CAE3/TR13 Datasheet

DirectRFQ

SMBJ33CA

MDDIn Stock: 25872SMBJ33CA Datasheet

MFR RecommendedRFQ

SMBJ33CA

MDDIn Stock: 25872SMBJ33CA Datasheet

MFR RecommendedRFQ

SMBJ33CA

MDDIn Stock: 25872SMBJ33CA Datasheet

MFR RecommendedRFQ

SZ1SMB33CAT3G

Littelfuse Inc.In Stock: 107791SZ1SMB33CAT3G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ33CA-M3/52 are qualified based on the following critical parameters that determine functional equivalence:

Electrical Parameters (Must Match):

• Voltage - Reverse Standoff (Typ): 33V
• Voltage - Breakdown (Min): 36.7V minimum
• Voltage - Clamping (Max) @ Ipp: 53.3V maximum
• Current - Peak Pulse (10/1000µs): 11.3A minimum
• Power - Peak Pulse: 600W
• Type: Zener, Bidirectional

Mechanical Parameters (Must Match):

• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Bidirectional Channels: 1

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts meeting these criteria are functionally interchangeable in the SMBJ33CA-M3/52 application circuit. Packaging format (Tape & Reel, Cut Tape & Digi-Reel) and manufacturer variations do not affect electrical performance or mechanical fit.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and full RoHS3 compliance, ensuring regulatory and environmental standards alignment with the SMBJ33CA-M3/52. Selection among equivalent parts should be based on:

Packaging Format: The SMBJ33CA-M3/52 is supplied in Tape & Reel (TR) format. Direct equivalents in identical packaging include SMBJ33CA-E3/5B, SMBJ33CD-M3/H, SMBJ33CA-E3/52, SMBJ33CAE3/TR13, and SMBJ33CA-TP. Parts supplied in Cut Tape (CT) & Digi-Reel format (SMBJ33CA-E3/5B, SMBJ33CA-13-F) are functionally equivalent but require different handling and storage procedures.

Manufacturer Availability: Vishay General Semiconductor - Diodes Division parts (SMBJ33CA-E3/5B, SMBJ33CD-M3/H, SMBJ33CA-E3/52) provide direct manufacturer continuity. Alternative manufacturers including Central Semiconductor Corp, Diodes Incorporated, Micro Commercial Co, Microchip Technology, and MDD offer qualified equivalents with identical electrical specifications.

Operating Temperature Range: The SMBJ33CA-M3/52 operates from -55°C to 150°C. Parts with extended lower temperature ratings (-65°C minimum) such as 1SMB33CA TR13 PBFREE and SMBJ33CAE3/TR13 provide additional thermal margin. The SMBJ33CA-TP extends the upper limit to 175°C. The MDD SMBJ33CA variant operates from -50°C, which is within acceptable tolerance for most applications.

Electrical Tolerance: SMBJ33CD-M3/H exhibits slightly different clamping voltage (52.5V vs. 53.3V) and breakdown voltage (37.3V vs. 36.7V) with marginally higher peak pulse current (11.5A vs. 11.3A). This part remains functionally equivalent within the 33V reverse standoff category but should be evaluated for applications with strict voltage regulation requirements.

Frequently Asked Questions (FAQ)

Q: Can SMBJ33CA-E3/5B be used as a direct replacement for SMBJ33CA-M3/52?

A: Yes. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical specifications (33V reverse standoff, 53.3V clamping voltage, 11.3A peak pulse current, 600W peak power). The primary difference is packaging format: SMBJ33CA-M3/52 is supplied in Tape & Reel (TR), while SMBJ33CA-E3/5B is supplied in Cut Tape (CT) & Digi-Reel format. Electrical performance and mechanical fit in DO-214AA SMB package are identical.

Q: What is the difference between SMBJ33CA-M3/52 and SMBJ33CD-M3/H?

A: Both are Vishay TVS diodes in DO-214AA SMB package with 33V reverse standoff rating. SMBJ33CD-M3/H exhibits a clamping voltage of 52.5V (versus 53.3V) and breakdown voltage of 37.3V (versus 36.7V), with slightly higher peak pulse current of 11.5A (versus 11.3A). These differences fall within the 33V category specification and do not affect mechanical compatibility. Selection depends on application-specific voltage regulation tolerances.

Q: Are parts from different manufacturers (Central Semiconductor, Diodes Incorporated, Microchip) electrically equivalent?

A: Yes. The 1SMB33CA TR13 PBFREE (Central Semiconductor Corp), SMBJ33CA-13-F (Diodes Incorporated), SMBJ33CAE3/TR13 (Microchip Technology), and SMBJ33CA (MDD) all meet the core electrical specifications: 33V reverse standoff, 36.7V minimum breakdown voltage, 53.3V maximum clamping voltage, 11.3A peak pulse current, and 600W peak power. All are RoHS3 compliant with MSL 1 rating. Mechanical fit in DO-214AA SMB package is identical across all manufacturers.

Q: Does operating temperature range affect substitution compatibility?

A: Operating temperature range does not affect electrical substitution compatibility for the specified application. The SMBJ33CA-M3/52 operates from -55°C to 150°C. Substitute parts with extended ranges (1SMB33CA TR13 PBFREE and SMBJ33CAE3/TR13 at -65°C minimum, SMBJ33CA-TP at 175°C maximum) provide additional thermal margin but are functionally equivalent. The MDD SMBJ33CA variant with -50°C minimum is acceptable for applications not requiring the full -55°C lower limit.

Q: Can I mix packaging formats (Tape & Reel vs. Cut Tape) in production?

A: Packaging format affects handling, storage, and assembly procedures but does not impact electrical performance or mechanical fit. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel formats contain identical components in DO-214AA SMB package. Production line integration requires compatible feeder systems and storage conditions per MSL 1 specifications. Electrical and mechanical substitution is valid across all packaging formats.

Q: Is SMBJ33CD-M3/H a suitable substitute despite different voltage specifications?

A: SMBJ33CD-M3/H is functionally equivalent within the 33V reverse standoff category. The clamping voltage difference (52.5V vs. 53.3V) and breakdown voltage variation (37.3V vs. 36.7V) represent normal manufacturing tolerance within the SMBJ33 series. This part is suitable for general-purpose transient suppression applications. Applications requiring strict adherence to 53.3V clamping voltage should use SMBJ33CA variants (SMBJ33CA-M3/52, SMBJ33CA-E3/5B, SMBJ33CA-E3/52, SMBJ33CA-13-F, SMBJ33CA-TP, SMBJ33CAE3/TR13, 1SMB33CA TR13 PBFREE).