SMCJ64C Equivalent & Substitute Parts

Part Overview

The SMCJ64C is a bidirectional 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 a maximum clamping voltage of 108.15V at peak pulse current of 14.6A, housed in a DO-214AB (SMC) package. The SMCJ64C is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMCJ64C
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Voltage - Reverse Standoff (Typ)	64V
Voltage - Breakdown (Min)	67.37V
Voltage - Clamping (Max) @ Ipp	108.15V
Current - Peak Pulse (10/1000µs)	14.6A
Power - Peak Pulse	1500W
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the SMCJ64C is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - Reverse Standoff: 64V (exact match required)
Voltage - Clamping (Max) @ Ipp: 103V to 114V (acceptable range for SMCJ64C alternatives)
Current - Peak Pulse (10/1000µs): 13.2A to 14.6A (compatible with 1500W power rating)
Package / Case: DO-214AB, SMC (identical form factor)
Mounting Type: Surface Mount (identical)
Type: Zener, Bidirectional (identical)

Secondary Criteria:

Operating Temperature Range: -55°C minimum to 150°C minimum
RoHS Status: ROHS3 Compliant
Product Status: Active (preferred for ongoing availability)

Substitute parts are grouped into two categories based on clamping voltage performance: those with 103V clamping voltage (SMCJ64CA variants and SMCJ64CAE3/TR13) and those with 114V clamping voltage (SMCJ64CE3/TR13). Both categories maintain the 64V reverse standoff voltage and 1500W peak pulse power rating of the original SMCJ64C.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Product Status
SMCJ64C	Littelfuse Inc.	64V	108.15V	14.6A	1500W	-55°C ~ 150°C	Obsolete
SMCJ64CA	Meritek	64V	103V	14.56A	1500W	-55°C ~ 150°C	Active
SMCJ64CA-13-F	Diodes Incorporated	64V	103V	14.6A	1500W	-55°C ~ 150°C	Active
SMCJ64CA-TP	Micro Commercial Co	64V	103V	14.6A	1500W	-55°C ~ 175°C	Active
SMCJ64CAE3/TR13	Microchip Technology	64V	103V	14.6A	1500W	-65°C ~ 150°C	Active
SMCJ64CE3/TR13	Microchip Technology	64V	114V	13.2A	1500W	-65°C ~ 150°C	Active
SMCJ58CE3/TR13	Microchip Technology	58V	103V	14.6A	1500W	-65°C ~ 150°C	Active
SMLJ58CE3/TR13	Microchip Technology	58V	103V	29.2A	300W	-55°C ~ 150°C	Active
SMLJ64CA	Bourns Inc.	64V	103V	29.2A	3000W	-55°C ~ 150°C	Active

Engineering Selection Recommendations

Direct Substitutes (64V Reverse Standoff, 1500W Peak Pulse Power):

SMCJ64CA, SMCJ64CA-13-F, SMCJ64CA-TP, and SMCJ64CAE3/TR13 are direct functional equivalents to the SMCJ64C. All maintain the 64V reverse standoff voltage, 1500W peak pulse power rating, and DO-214AB package. These parts are manufactured by active suppliers (Meritek, Diodes Incorporated, Micro Commercial Co, and Microchip Technology) and carry ROHS3 compliance. SMCJ64CA-TP offers extended operating temperature to 175°C, and SMCJ64CAE3/TR13 extends the lower temperature limit to -65°C.

Alternative with Higher Clamping Voltage:

SMCJ64CE3/TR13 maintains the 64V reverse standoff voltage and 1500W power rating but provides 114V clamping voltage compared to the SMCJ64C's 108.15V. This part is suitable for applications requiring higher transient voltage suppression margins. Peak pulse current is reduced to 13.2A due to the higher clamping voltage within the same power envelope.

Lower Voltage Standoff Alternatives:

SMCJ58CE3/TR13 and SMLJ58CE3/TR13 feature 58V reverse standoff voltage and are not direct substitutes for 64V applications. These parts are listed in the original SMCJ64C substitute field but require circuit-level evaluation to confirm compatibility.

Higher Power Alternative:

SMLJ64CA provides 64V reverse standoff voltage with 3000W peak pulse power (double the SMCJ64C rating) and 29.2A peak pulse current. This part is suitable for applications requiring enhanced transient protection capability while maintaining the same voltage class and package form factor.

Frequently Asked Questions (FAQ)

Q: Can SMCJ64CA directly replace SMCJ64C in existing designs?

A: Yes. SMCJ64CA maintains the critical parameters: 64V reverse standoff voltage, 103V clamping voltage (within acceptable range of SMCJ64C's 108.15V), 14.56A peak pulse current, 1500W peak pulse power, and DO-214AB package. The part is manufactured by Meritek and carries ROHS3 compliance.

Q: What is the difference between SMCJ64CA and SMCJ64CE3/TR13?

A: Both maintain 64V reverse standoff voltage and 1500W power rating. SMCJ64CA provides 103V clamping voltage with 14.56A peak pulse current, while SMCJ64CE3/TR13 provides 114V clamping voltage with 13.2A peak pulse current. SMCJ64CE3/TR13 is manufactured by Microchip Technology and extends the lower operating temperature to -65°C.

Q: Why is SMLJ64CA listed as a substitute despite different power rating?

A: SMLJ64CA maintains the 64V reverse standoff voltage and DO-214AB package but provides 3000W peak pulse power and 29.2A peak pulse current. This part is suitable for applications requiring higher transient energy absorption while maintaining the same voltage class. Circuit-level evaluation is required to confirm compatibility with the original design's power dissipation requirements.

Q: Are SMCJ58CE3/TR13 and SMLJ58CE3/TR13 suitable replacements for SMCJ64C?

A: No. Both parts feature 58V reverse standoff voltage, which is lower than the SMCJ64C's 64V specification. These parts are not direct substitutes and require circuit-level analysis to confirm compatibility with the original 64V protection requirement.

Q: What packaging options are available for SMCJ64C substitutes?

A: All listed substitutes use the DO-214AB (SMC) surface-mount package, identical to the SMCJ64C. Some variants are supplied in Tape & Reel (TR) packaging for automated assembly, while others are available in Cut Tape (CT) format. Verify packaging requirements with your procurement specification.

Q: Which substitute offers the widest operating temperature range?

A: SMCJ64CA-TP extends the upper operating temperature to 175°C (compared to 150°C for SMCJ64C), while SMCJ64CAE3/TR13 and SMCJ64CE3/TR13 extend the lower temperature limit to -65°C (compared to -55°C for SMCJ64C).

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