SMBJ20CA-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBJ20CA-M3/5B is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 20V reverse standoff category and is designed for general-purpose transient voltage protection applications. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical packaging, and compliance certifications to ensure direct circuit compatibility.

Substiute Parts

SMBJ20CA-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1219SMBJ20CA-M3/5B Datasheet

Current PartRFQ

SMBJ20CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 45269SMBJ20CA-E3/52 Datasheet

DirectRFQ

SMBJ20CD-M3/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 10718SMBJ20CD-M3/I Datasheet

DirectRFQ

SMBJ20CA-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 4099SMBJ20CA-E3/5B Datasheet

MFR RecommendedRFQ

1SMB20CA TR13 PBFREE

Central Semiconductor CorpIn Stock: 29231SMB20CA TR13 PBFREE Datasheet

DirectRFQ

SMBJ20CA-13-F

Diodes IncorporatedIn Stock: 65277SMBJ20CA-13-F Datasheet

DirectRFQ

SMBJ20CA-TP

Micro Commercial CoIn Stock: 3518SMBJ20CA-TP Datasheet

DirectRFQ

SMBJ20CA

Fairchild SemiconductorIn Stock: 26343SMBJ20CA Datasheet

UpgradeRFQ

SMBJ20CA

Fairchild SemiconductorIn Stock: 26343SMBJ20CA Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ20CA-M3/5B is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 20V
• Voltage - Breakdown (Min): 22.2V minimum
• Voltage - Clamping (Max) @ Ipp: 32.4V maximum
• Current - Peak Pulse (10/1000µs): 18.5A minimum
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Parts are grouped as Direct equivalents when all electrical parameters match exactly. Manufacturer-recommended substitutes are identified by the original manufacturer as approved alternatives. Upgrade options provide equivalent or superior performance within the same package footprint.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the original SMBJ20CA-M3/5B specification.

Direct electrical equivalents include SMBJ20CA-E3/52 and SMBJ20CA-E3/5B from Vishay, which match all voltage and current parameters. These parts are manufactured by the original equipment supplier and carry identical electrical ratings.

SMBJ20CA-13-F from Diodes Incorporated and 1SMB20CA TR13 PBFREE from Central Semiconductor Corp provide full parameter equivalence with identical voltage standoff, breakdown, clamping, and peak pulse current specifications. The 1SMB20CA TR13 PBFREE extends the lower operating temperature limit to -65°C.

SMBJ20CA-TP from Micro Commercial Co matches all electrical parameters and extends the upper operating temperature to -55°C ~ 175°C, providing enhanced thermal performance within the same package footprint.

SMBJ20CD-M3/I from Vishay presents a near-equivalent option with marginally higher peak pulse current (18.8A) and slightly lower clamping voltage (32V), suitable for applications where these minor variations are acceptable.

SMBJ20CA from Fairchild Semiconductor provides upgrade-level performance with 18.6A peak pulse current, maintaining all other electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can SMBJ20CA-E3/52 be used as a direct replacement for SMBJ20CA-M3/5B?

A: Yes. Both parts are manufactured by Vishay and share identical electrical parameters: 20V reverse standoff, 22.2V minimum breakdown voltage, 32.4V maximum clamping voltage, and 18.5A peak pulse current. Both use DO-214AA SMB packaging and operate across -55°C to 150°C.

Q: What is the difference between SMBJ20CA-M3/5B and SMBJ20CD-M3/I?

A: The primary differences are peak pulse current (18.5A vs 18.8A) and clamping voltage (32.4V vs 32V). Both maintain 20V reverse standoff and 600W peak pulse power. SMBJ20CD-M3/I provides slightly higher current handling capacity.

Q: Are parts from different manufacturers interchangeable?

A: Yes, provided all electrical parameters match. SMBJ20CA-13-F (Diodes Incorporated), 1SMB20CA TR13 PBFREE (Central Semiconductor Corp), and SMBJ20CA-TP (Micro Commercial Co) all meet the electrical specifications of SMBJ20CA-M3/5B and use compatible DO-214AA SMB packaging.

Q: Does operating temperature range affect substitution eligibility?

A: Operating temperature range does not disqualify substitution if the application operates within the overlapping temperature window. SMBJ20CA-TP operates to 175°C (vs 150°C for the original), and 1SMB20CA TR13 PBFREE operates to -65°C (vs -55°C), both providing extended capability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the regulatory status of SMBJ20CA-M3/5B.

Q: What packaging considerations apply to these substitutes?

A: All substitute parts use DO-214AA SMB surface mount packaging, ensuring mechanical and footprint compatibility with the original SMBJ20CA-M3/5B design.