SMBJ17CA-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBJ17CA-M3/5B is a bidirectional Zener 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 general-purpose transient voltage suppression applications. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, manufacturing discontinuation, or supply chain optimization.

Substiute Parts

SMBJ17CA-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 853SMBJ17CA-M3/5B Datasheet

Current PartRFQ

SMBJ17CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 3468SMBJ17CA-E3/52 Datasheet

DirectRFQ

SMBJ17CA-13-F

Diodes IncorporatedIn Stock: 25321SMBJ17CA-13-F Datasheet

DirectRFQ

SMBJ17CA-TP

Micro Commercial CoIn Stock: 3722SMBJ17CA-TP Datasheet

DirectRFQ

SMBJ16CA

EVVO SemiIn Stock: 29230SMBJ16CA Datasheet

MFR RecommendedRFQ

SMBJ16CA

EVVO SemiIn Stock: 29230SMBJ16CA Datasheet

MFR RecommendedRFQ

SMBJ17CA

MeritekIn Stock: 22188SMBJ17CA Datasheet

MFR RecommendedRFQ

SMBJ17CA

MeritekIn Stock: 22188SMBJ17CA Datasheet

MFR RecommendedRFQ

SMBJ18CA

MDDIn Stock: 143366SMBJ18CA Datasheet

MFR RecommendedRFQ

SMBJ18CA

MDDIn Stock: 143366SMBJ18CA Datasheet

MFR RecommendedRFQ

SZ1SMB17CAT3G

Littelfuse Inc.In Stock: 3409SZ1SMB17CAT3G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ17CA-M3/5B are classified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution eligibility:

Primary Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 17V
• Voltage - Clamping (Max) @ Ipp: 27.6V
• Current - Peak Pulse (10/1000µs): 21.7A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Bidirectional Channels: 1

Secondary Compatibility Criteria:

• Operating Temperature Range: -55°C minimum to 150°C maximum
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Parts are grouped into three categories:

1. Direct Equivalents - Identical electrical specifications and packaging
2. Manufacturer Recommended Alternatives - Slight parameter variations within acceptable tolerance
3. Extended Range Alternatives - Enhanced operating temperature or performance characteristics

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Identical Specifications):

SMBJ17CA-E3/52, SMBJ17CA-13-F, and SMBJ17CA from Meritek are direct electrical and mechanical equivalents to the SMBJ17CA-M3/5B. All three maintain identical voltage ratings, current handling, and power dissipation characteristics. These parts are suitable for one-to-one replacement without circuit redesign. All are Active status and ROHS3 compliant.

Enhanced Operating Range Alternative:

SMBJ17CA-TP (Micro Commercial Co) provides identical electrical specifications with an extended upper operating temperature of 175°C compared to the standard 150°C. This part is applicable in applications requiring elevated thermal performance while maintaining all other electrical parameters.

SZ1SMB17CAT3G (Littelfuse Inc.) offers extended lower operating temperature (-65°C) and includes AEC-Q101 automotive qualification. This part is suitable for automotive and extended temperature range applications requiring the same 17V/27.6V suppression characteristics.

Voltage-Shifted Alternatives:

SMBJ16CA (EVVO Semi) operates at 16V reverse standoff with 26V clamping voltage. This part is applicable only when a lower voltage suppression threshold is acceptable for the circuit design.

SMBJ18CA (MDD) operates at 18V reverse standoff with 29.2V clamping voltage. This part is applicable only when a higher voltage suppression threshold is acceptable for the circuit design.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and surface mount DO-214AA/SMB packaging compatibility.

Frequently Asked Questions (FAQ)

Q: Can SMBJ17CA-E3/52 replace SMBJ17CA-M3/5B directly?

A: Yes. SMBJ17CA-E3/52 is a direct equivalent with identical voltage ratings (17V standoff, 27.6V clamping), current handling (21.7A), and operating temperature range (-55°C to 150°C). Both use DO-214AA/SMB packaging and are ROHS3 compliant. No circuit modifications are required.

Q: What is the difference between SMBJ17CA-TP and the main part?

A: SMBJ17CA-TP maintains identical electrical specifications but extends the upper operating temperature to 175°C versus 150°C. All other parameters including voltage ratings, current capacity, and packaging remain equivalent. Use this part when thermal performance above 150°C is required.

Q: Can SMBJ16CA or SMBJ18CA be used as substitutes?

A: SMBJ16CA and SMBJ18CA are not direct equivalents. SMBJ16CA operates at 16V standoff (versus 17V) with 26V clamping, while SMBJ18CA operates at 18V standoff with 29.2V clamping. These parts are applicable only if the circuit design permits voltage threshold variation. Verify circuit requirements before substitution.

Q: Is SZ1SMB17CAT3G suitable for automotive applications?

A: SZ1SMB17CAT3G carries AEC-Q101 automotive qualification and maintains identical 17V/27.6V electrical specifications. It is suitable for automotive applications requiring the same suppression characteristics as the main part, with the added benefit of extended lower temperature operation (-65°C).

Q: Are all substitute parts available in the same packaging?

A: Yes. All listed substitute parts use DO-214AA/SMB surface mount packaging, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. All carry Active product status. Specific automotive qualifications apply only to SZ1SMB17CAT3G (AEC-Q101).