SMBJ54CD-M3/I Equivalent & Substitute Parts

Part Overview

The SMBJ54CD-M3/I is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 54V reverse standoff voltage class and is designed for general-purpose transient protection applications. The device features a 600W peak pulse power rating and operates across the temperature range of -55°C to 150°C. The part maintains Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

SMBJ54CD-M3/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1064SMBJ54CD-M3/I Datasheet

Current PartRFQ

SMBJ54CA-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 3386SMBJ54CA-E3/5B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ54CD-M3/I is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Reverse Standoff Voltage: 54V (Typ)
• Package / Case: DO-214AA, SMB (Surface Mount)
• Bidirectional Channels: 1
• Type: Zener
• Series: TransZorb®
• Manufacturer: Vishay General Semiconductor - Diodes Division

Allowable Variation Parameters:

• Voltage - Breakdown (Min): 60V to 60.9V range
• Voltage - Clamping (Max) @ Ipp: 85.9V to 87.1V range
• Current - Peak Pulse (10/1000µs): 6.9A to 7A range
• Power - Peak Pulse: 600W (fixed)

The SMBJ54CA-E3/5B qualifies as a direct substitute based on identical reverse standoff voltage, package type, mounting configuration, and thermal operating range. Clamping voltage and peak pulse current variations remain within acceptable engineering tolerances for the 54V protection class.

Parameter Comparison

Engineering Selection Recommendations

Both the SMBJ54CD-M3/I and SMBJ54CA-E3/5B maintain Active product status from Vishay General Semiconductor - Diodes Division. Both components are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity classification, indicating equivalent environmental and regulatory compliance profiles.

The SMBJ54CA-E3/5B is the manufacturer-recommended substitute. Selection between these parts should be based on availability, lead time, and inventory requirements. Both devices are suitable for direct substitution in 54V transient protection circuits without design modification.

Frequently Asked Questions (FAQ)

Q: Can SMBJ54CA-E3/5B replace SMBJ54CD-M3/I in existing designs?

A: Yes. Both parts share identical reverse standoff voltage (54V), package type (DO-214AA, SMB), mounting configuration (Surface Mount), and thermal operating range (-55°C to 150°C). The clamping voltage difference (85.9V vs. 87.1V) and peak pulse current variation (7A vs. 6.9A) remain within the acceptable tolerance band for the 54V protection class.

Q: Are there any PCB layout or footprint differences?

A: No. Both components use the DO-214AA (SMB) package. PCB footprints, land patterns, and assembly processes are identical.

Q: What is the difference in clamping voltage between these parts?

A: The SMBJ54CD-M3/I clamps at 85.9V maximum, while the SMBJ54CA-E3/5B clamps at 87.1V maximum. This 1.2V difference is within normal manufacturing tolerance for the 54V Zener class and does not affect circuit protection performance.

Q: Are both parts RoHS compliant?

A: Yes. Both SMBJ54CD-M3/I and SMBJ54CA-E3/5B are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Q: Which part should I specify for new designs?

A: Either part is acceptable for new designs. Selection should be based on current availability, supplier inventory, and procurement lead times. Both maintain Active product status and identical compliance certifications.