SMBJ33A-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBJ33A-M3/5B is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 33V reverse standoff category and is designed for general-purpose transient voltage suppression applications. The part is Active status and RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility.

Substiute Parts

SMBJ33A-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 701SMBJ33A-M3/5B Datasheet

Current PartRFQ

SMBJ33A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 10204SMBJ33A-E3/52 Datasheet

DirectRFQ

SMBJ33D-M3/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 6590SMBJ33D-M3/I Datasheet

DirectRFQ

SMBJ33A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 11457SMBJ33A-E3/5B Datasheet

MFR RecommendedRFQ

1SMB33A TR13 PBFREE

Central Semiconductor CorpIn Stock: 29681SMB33A TR13 PBFREE Datasheet

DirectRFQ

SMBJ33A

Good-Ark SemiconductorIn Stock: 17220SMBJ33A Datasheet

DirectRFQ

SMBJ33A

Good-Ark SemiconductorIn Stock: 17220SMBJ33A Datasheet

DirectRFQ

SMBJ33A-13-F

Diodes IncorporatedIn Stock: 1773SMBJ33A-13-F Datasheet

DirectRFQ

SMBJ33A-TP

Micro Commercial CoIn Stock: 1464SMBJ33A-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ33A-M3/5B is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 33V
• Voltage - Clamping (Max) @ Ipp: 53.3V ± tolerance
• Current - Peak Pulse (10/1000µs): 11.3A ± tolerance
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional
• RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories:

Category 1: Direct Electrical & Mechanical Equivalents — Parts with identical voltage ratings (33V standoff, 53.3V clamping), current ratings (11.3A peak pulse), and DO-214AA/SMB package. These parts differ only in packaging format (Tape & Reel vs. Cut Tape) or manufacturer source.

Category 2: Near-Equivalent with Minor Parameter Variance — Parts with 33V standoff voltage and 600W peak pulse power but with slight variations in clamping voltage (52.5V) or peak pulse current (11.5A). These parts maintain functional compatibility within typical application tolerances.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and ROHS3 compliance, meeting regulatory requirements for current applications. Selection among equivalent parts should be based on:

Packaging Format Compatibility — SMBJ33A-E3/52 and SMBJ33A-E3/5B are supplied in Cut Tape (CT) & Digi-Reel® format, while SMBJ33A-M3/5B is supplied in Tape & Reel (TR). Verify packaging compatibility with assembly equipment and procurement workflows.

Manufacturer Source Diversity — Multiple manufacturers (Vishay, Central Semiconductor, Good-Ark, Diodes Incorporated, Micro Commercial Co) provide equivalent SMBJ33A devices. Cross-manufacturer substitution supports supply chain resilience.

Temperature Range Considerations — SMBJ33A-TP supports extended operating temperature to 175°C (versus 150°C for most alternatives) and 1SMB33A TR13 PBFREE supports -65°C minimum (versus -55°C). Select based on application thermal requirements.

Parameter Variance — SMBJ33D-M3/I exhibits 52.5V clamping voltage and 11.5A peak pulse current, representing minor variance from the 53.3V/11.3A specification. This part is functionally compatible for applications where clamping voltage tolerance permits.

Frequently Asked Questions (FAQ)

Q: Can SMBJ33A-E3/52 directly replace SMBJ33A-M3/5B in production?

A: Yes. Both parts are manufactured by Vishay, share identical electrical specifications (33V standoff, 53.3V clamping, 11.3A peak pulse, 600W power), and use DO-214AA/SMB packaging. The difference is packaging format: SMBJ33A-E3/52 uses Cut Tape & Digi-Reel®, while SMBJ33A-M3/5B uses Tape & Reel. Verify compatibility with your assembly equipment.

Q: Is SMBJ33D-M3/I a suitable substitute?

A: SMBJ33D-M3/I is functionally compatible for most applications. It maintains the 33V reverse standoff voltage and 600W peak pulse power but specifies 52.5V clamping voltage (versus 53.3V) and 11.5A peak pulse current (versus 11.3A). Use this part only if your circuit design tolerates these parameter variations.

Q: What is the difference between Vishay SMBJ33A variants?

A: Vishay offers SMBJ33A-M3/5B (Tape & Reel), SMBJ33A-E3/52 (Cut Tape & Digi-Reel®), and SMBJ33A-E3/5B (Tape & Reel). All three share identical electrical specifications. Selection depends on packaging and reel format requirements for your procurement and assembly process.

Q: Can I use Good-Ark SMBJ33A instead of Vishay SMBJ33A-M3/5B?

A: Yes. Good-Ark SMBJ33A meets all electrical and mechanical specifications of the Vishay part: 33V standoff, 53.3V clamping, 11.3A peak pulse, 600W power, DO-214AA/SMB package, and ROHS3 compliance. Cross-manufacturer substitution is electrically valid.

Q: Does operating temperature range affect substitution eligibility?

A: Operating temperature range does not disqualify substitution but should be verified against application requirements. SMBJ33A-TP supports -55 to 175°C, while most alternatives support -55 to 150°C. 1SMB33A TR13 PBFREE supports -65 to 150°C. Select based on your circuit's thermal operating envelope.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original SMBJ33A-M3/5B specification.