SMBJ8.5CA-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBJ8.5CA-M3/5B is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 8.5V reverse standoff voltage class and is designed for general-purpose transient protection applications. The part is Active status and RoHS3 compliant. Equivalent and substitute parts are identified when electrical performance parameters and mechanical compatibility remain within specified tolerances across different manufacturers and packaging variants.

Substiute Parts

SMBJ8.5CA-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 888SMBJ8.5CA-M3/5B Datasheet

Current PartRFQ

SMBJ8.5CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 60121SMBJ8.5CA-E3/52 Datasheet

DirectRFQ

SMBJ8.5CA

EVVO SemiIn Stock: 5517SMBJ8.5CA Datasheet

DirectRFQ

SMBJ8.5CA-13-F

Diodes IncorporatedIn Stock: 46117SMBJ8.5CA-13-F Datasheet

DirectRFQ

SMBJ8.5CA-TP

Micro Commercial CoIn Stock: 3938SMBJ8.5CA-TP Datasheet

DirectRFQ

P6SMB10CA

Eaton - Electronics DivisionIn Stock: 4366P6SMB10CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ8.5CA-M3/5B are classified based on strict electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 8.5V ± tolerance
• Voltage - Clamping (Max) @ Ipp: 14.4V ± tolerance
• Current - Peak Pulse (10/1000µs): 41.7A ± tolerance
• Package / Case: DO-214AA, SMB (surface mount)
• Mounting Type: Surface Mount
• Type: Zener, Bidirectional
• RoHS Status: ROHS3 Compliant or equivalent

Direct Equivalents maintain identical electrical specifications across all critical parameters and differ only in manufacturer or packaging format (Tape & Reel vs. Cut Tape).

Functional Equivalents exhibit minor variations in operating temperature range or clamping voltage within acceptable engineering tolerances while maintaining core protection characteristics.

Cross-Voltage Alternatives operate at adjacent voltage classes (8.55V standoff) with marginally higher clamping performance, suitable for applications with relaxed voltage specifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Identical Electrical Performance): SMBJ8.5CA-E3/52, SMBJ8.5CA-13-F, and SMBJ8.5CA are direct functional equivalents to SMBJ8.5CA-M3/5B. All maintain 8.5V reverse standoff voltage, 14.4V clamping voltage, and 41.7A peak pulse current. Selection among these parts depends on packaging availability and supply chain requirements. SMBJ8.5CA-E3/52 from Vishay maintains identical specifications and Tape & Reel packaging. SMBJ8.5CA-13-F from Diodes Incorporated and SMBJ8.5CA from EVVO Semi provide equivalent performance with alternative packaging formats.

Extended Temperature Range Option: SMBJ8.5CA-TP from Micro Commercial Co extends the upper operating temperature to 175°C compared to the standard 150°C maximum. This variant is suitable for applications requiring enhanced thermal performance while maintaining all other electrical specifications.

Cross-Voltage Alternative: P6SMB10CA from Eaton operates at 8.55V reverse standoff with 14.5V clamping voltage and 42.1A peak pulse current. This part represents a marginal increase in voltage class and is applicable only when circuit design permits operation at the higher voltage specification. All substitute parts maintain RoHS compliance and SMB package compatibility.

Frequently Asked Questions (FAQ)

Q: Can SMBJ8.5CA-E3/52 be used as a direct replacement for SMBJ8.5CA-M3/5B? A: Yes. Both parts are manufactured by Vishay and maintain identical electrical specifications: 8.5V reverse standoff, 14.4V clamping voltage, 41.7A peak pulse current, and 600W peak pulse power. The difference is packaging format (both Tape & Reel). No circuit redesign is required.

Q: What is the difference between SMBJ8.5CA from EVVO Semi and the Vishay version? A: The EVVO Semi variant maintains identical electrical performance but extends the lower operating temperature limit to -65°C compared to -55°C for Vishay. Packaging differs (Cut Tape & Digi-Reel® vs. Tape & Reel). Selection depends on temperature requirements and packaging compatibility with assembly equipment.

Q: Is P6SMB10CA a suitable substitute? A: P6SMB10CA operates at 8.55V reverse standoff and 14.5V clamping voltage, representing a 0.05V increase in standoff voltage and 0.1V increase in clamping voltage. This part is suitable only when circuit design specifications permit operation at the higher voltage class. Peak pulse current increases marginally to 42.1A.

Q: Why does SMBJ8.5CA-TP have a higher maximum operating temperature? A: SMBJ8.5CA-TP from Micro Commercial Co is rated to 175°C junction temperature compared to 150°C for the main part. This extended range does not affect electrical performance but provides thermal margin for high-temperature applications. All other specifications remain identical.

Q: Are all substitute parts RoHS compliant? A: Yes. SMBJ8.5CA-E3/52, SMBJ8.5CA, SMBJ8.5CA-13-F, and SMBJ8.5CA-TP are ROHS3 compliant. P6SMB10CA is RoHS compliant. All parts meet environmental compliance requirements for industrial and commercial applications.

Q: Can these parts be used interchangeably in automated assembly? A: Direct equivalents (SMBJ8.5CA-E3/52, SMBJ8.5CA-13-F, SMBJ8.5CA) are mechanically and electrically interchangeable. Packaging format differences (Tape & Reel vs. Cut Tape) may require equipment reconfiguration. Verify feeder compatibility with your assembly equipment before production changeover.