SMBJ64C Equivalent & Substitute Parts

Part Overview

The SMBJ64C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 64V reverse standoff voltage with 108.15V maximum clamping voltage and 5.9A peak pulse current capability in a DO-214AA (SMB) package. The SMBJ64C is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements.

Substiute Parts

SMBJ64C

Littelfuse Inc.In Stock: 800SMBJ64C Datasheet

Current PartRFQ

SMBJ64CA

MeritekIn Stock: 35457SMBJ64CA Datasheet

MFR RecommendedRFQ

SMBJ64CA

MeritekIn Stock: 35457SMBJ64CA Datasheet

MFR RecommendedRFQ

SMBJ64CA

MeritekIn Stock: 35457SMBJ64CA Datasheet

MFR RecommendedRFQ

SMBJ64CA

MeritekIn Stock: 35457SMBJ64CA Datasheet

MFR RecommendedRFQ

SMBJ64CA-13-F

Diodes IncorporatedIn Stock: 1372SMBJ64CA-13-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMBJ64C is determined by strict electrical and mechanical compatibility within the SMBJ series. The following parameters define acceptable substitutes:

• Reverse standoff voltage: 64V (identical)
• Clamping voltage range: 103V–108.15V (within acceptable transient suppression envelope)
• Peak pulse current: 5.8A–5.9A (functionally equivalent)
• Package: DO-214AA (SMB) surface mount (identical)
• Power rating: 600W (identical)
• Bidirectional channels: 1 (identical)
• RoHS3 compliance (regulatory requirement)

The substitute parts SMBJ64CA (Meritek) and SMBJ64CA-13-F (Diodes Incorporated) meet these criteria. Both maintain the 64V standoff voltage and 600W power rating while operating within the specified clamping voltage and peak pulse current tolerances.

Parameter Comparison

Engineering Selection Recommendations

Both SMBJ64CA (Meritek) and SMBJ64CA-13-F (Diodes Incorporated) are active production alternatives to the obsolete SMBJ64C. Selection between these substitutes is based on the following factors:

SMBJ64CA (Meritek): Offers the highest inventory availability (35,400 pcs) and maintains full ROHS3 compliance with REACH unaffected status. Operating temperature range is -55°C to 150°C.

SMBJ64CA-13-F (Diodes Incorporated): Provides active product status with ROHS3 compliance and REACH unaffected designation. Available in Cut Tape (CT) and Digi-Reel packaging options. Operating temperature range is -55°C to 150°C.

Both parts are electrically equivalent within the specified parameter tolerances and are suitable for direct replacement in applications previously using the SMBJ64C. The choice between manufacturers depends on supply chain requirements, packaging preferences, and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can SMBJ64CA and SMBJ64CA-13-F be used interchangeably with SMBJ64C?

A: Yes. Both substitute parts maintain the critical electrical parameters: 64V reverse standoff voltage, 600W peak pulse power, and DO-214AA (SMB) surface-mount package. Clamping voltage and peak pulse current variations fall within acceptable operating tolerances for TVS diode applications.

Q: What is the difference in clamping voltage between the original and substitutes?

A: The SMBJ64C specifies 108.15V maximum clamping voltage, while both SMBJ64CA variants specify 103V. This 5.15V difference represents improved clamping performance and remains within the functional requirements for general-purpose transient suppression.

Q: Are there packaging differences between the substitutes?

A: Both substitutes use the DO-214AA (SMB) surface-mount package, ensuring identical PCB footprint compatibility. SMBJ64CA-13-F is additionally available in Cut Tape (CT) and Digi-Reel packaging formats, providing flexibility for different procurement and assembly workflows.

Q: What is the operating temperature difference?

A: The SMBJ64C operates from -65°C to 150°C, while both substitutes operate from -55°C to 150°C. The 10°C difference in minimum operating temperature does not affect most general-purpose applications but should be verified for extreme low-temperature environments.

Q: Are both substitutes RoHS3 compliant?

A: Yes. Both SMBJ64CA (Meritek) and SMBJ64CA-13-F (Diodes Incorporated) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting regulatory requirements for modern electronics manufacturing.