SMCJ64A-TP Equivalent & Substitute Parts

Part Overview

The SMCJ64A-TP is a unidirectional transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 64V reverse standoff voltage, 103V maximum clamping voltage, and 1500W peak pulse power rating in a DO-214AB (SMC) package. The part is active in production status and ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits selection from multiple qualified manufacturers meeting identical or compatible electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	64V	V
Voltage - Breakdown (Min)	71.1V	V
Voltage - Clamping (Max) @ Ipp	103V	V
Current - Peak Pulse (10/1000µs)	14.6A	A
Power - Peak Pulse	1500W	W
Type	Zener	—
Unidirectional Channels	1	—
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Operating Temperature	-55°C ~ 175°C	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical and mechanical compatibility with SMCJ64A-TP:

Direct Equivalents maintain identical electrical specifications: 64V reverse standoff voltage, 71.1V minimum breakdown voltage, 103V maximum clamping voltage, 14.6A peak pulse current, and 1500W peak pulse power. These parts are pin-compatible in DO-214AB (SMC) surface-mount packages and require no circuit redesign. Direct equivalents include SMCJ64A (Meritek), SMCJ64A-13-F (Diodes Incorporated), and SMCJ64A-E3/57T (Vishay General Semiconductor - Diodes Division).

Similar Substitutes share the same voltage protection characteristics (64V standoff, 71.1V breakdown, 103V clamping) and package form factor but differ in peak pulse current and power dissipation ratings. These parts provide equivalent voltage clamping performance with enhanced or reduced current-handling capacity. Similar substitutes include 1.5SMC75A (Taiwan Semiconductor Corporation), 5.0SMDJ64A (Taiwan Semiconductor Corporation), 5.0SMDJ64A-T7 (Littelfuse Inc.), SMDJ64A (Alpha & Omega Semiconductor Inc.), and SMLJ64A (Bourns Inc.).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package / Case	RoHS Status
SMCJ64A-TP	Micro Commercial Co	64V	71.1V	103V	14.6A	1500W	-55°C ~ 175°C	DO-214AB, SMC	ROHS3 Compliant
SMCJ64A	Meritek	64V	71.1V	103V	14.56A	1500W	-55°C ~ 150°C	DO-214AB (SMC)	ROHS3 Compliant
SMCJ64A-13-F	Diodes Incorporated	64V	71.1V	103V	14.6A	1500W	-55°C ~ 150°C	DO-214AB, SMC	ROHS3 Compliant
SMCJ64A-E3/57T	Vishay General Semiconductor - Diodes Division	64V	71.1V	103V	14.6A	1500W	-55°C ~ 150°C	DO-214AB, SMC	ROHS3 Compliant
1.5SMC75A	Taiwan Semiconductor Corporation	64.1V	71.3V	103V	15A	1500W	-55°C ~ 150°C	DO-214AB, SMC	ROHS3 Compliant
5.0SMDJ64A	Taiwan Semiconductor Corporation	64V	71.1V	103V	48.6A	5000W	-55°C ~ 175°C	DO-214AB, SMC	ROHS3 Compliant
5.0SMDJ64A-T7	Littelfuse Inc.	64V	71.1V	103V	48.6A	5000W	-65°C ~ 150°C	DO-214AB, SMC	ROHS3 Compliant
SMDJ64A	Alpha & Omega Semiconductor Inc.	64V	71.1V	103V	29.2A	3000W	-55°C ~ 150°C	DO-214AB, SMC	ROHS3 Compliant
SMLJ64A	Bourns Inc.	64V	71.1V	103V	29.2A	3000W	-55°C ~ 150°C	DO-214AB, SMC	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent Selection: SMCJ64A (Meritek), SMCJ64A-13-F (Diodes Incorporated), and SMCJ64A-E3/57T (Vishay General Semiconductor - Diodes Division) are direct functional equivalents with matching voltage specifications and 1500W power ratings. All three maintain ROHS3 compliance and MSL 1 rating. Selection among these three is determined by availability, lead time, and packaging preference (Tape & Reel vs. bulk). The Meritek variant operates to -55°C ~ 150°C, while Diodes Incorporated and Vishay variants also operate to -55°C ~ 150°C. The original SMCJ64A-TP operates to -55°C ~ 175°C; applications requiring operation above 150°C should retain the original part or verify thermal performance with substitute datasheets.

Enhanced Power Rating Selection: For applications requiring higher transient energy absorption, 5.0SMDJ64A (Taiwan Semiconductor Corporation) and 5.0SMDJ64A-T7 (Littelfuse Inc.) provide 5000W peak pulse power with 48.6A peak pulse current while maintaining identical voltage clamping characteristics. These parts are suitable for high-energy transient environments and are ROHS3 compliant. The Taiwan Semiconductor variant operates to -55°C ~ 175°C, matching the original part's temperature range. The Littelfuse variant operates to -65°C ~ 150°C.

Intermediate Power Rating Selection: SMDJ64A (Alpha & Omega Semiconductor Inc.) and SMLJ64A (Bourns Inc.) provide 3000W peak pulse power with 29.2A peak pulse current, offering a middle ground between standard and enhanced ratings. Both maintain identical voltage specifications and ROHS3 compliance. Operating temperature range is -55°C ~ 150°C for both variants.

Lower Current Alternative: 1.5SMC75A (Taiwan Semiconductor Corporation) maintains 1500W power rating with 15A peak pulse current and operates to -55°C ~ 150°C. Voltage specifications are marginally higher (64.1V standoff, 71.3V breakdown) but remain within acceptable tolerance for 64V protection applications.

All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the original SMCJ64A-TP.

Frequently Asked Questions (FAQ)

Q: Can SMCJ64A (Meritek) directly replace SMCJ64A-TP in production?

A: Yes. SMCJ64A (Meritek) is a direct equivalent with identical voltage specifications (64V standoff, 71.1V breakdown, 103V clamping), matching peak pulse current (14.56A), and equivalent 1500W power rating. Both are ROHS3 compliant with MSL 1 rating and DO-214AB (SMC) package compatibility. The only difference is operating temperature range: Meritek variant operates to -55°C ~ 150°C versus the original -55°C ~ 175°C. Verify application thermal requirements before substitution.

Q: What is the difference between direct equivalents and similar substitutes?

A: Direct equivalents (SMCJ64A variants from Meritek, Diodes Incorporated, Vishay) maintain identical electrical specifications including 14.6A peak pulse current and 1500W power rating. Similar substitutes differ in peak pulse current and power dissipation: 1.5SMC75A provides 15A at 1500W, SMDJ64A and SMLJ64A provide 29.2A at 3000W, and 5.0SMDJ64A variants provide 48.6A at 5000W. All maintain the same voltage clamping performance (64V standoff, 103V clamping) and DO-214AB package form factor.

Q: When should I select a higher power-rated substitute like 5.0SMDJ64A-T7?

A: Select higher power-rated substitutes when the application experiences transient events exceeding 1500W energy or when peak pulse currents exceed 14.6A. The 5.0SMDJ64A-T7 (Littelfuse) provides 5000W peak pulse power with 48.6A peak pulse current while maintaining identical voltage clamping. This part is suitable for industrial, telecom, and high-energy transient protection circuits. Verify PCB thermal design and component placement to accommodate increased power dissipation.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All listed substitute parts use the DO-214AB (SMC) surface-mount package, ensuring mechanical and footprint compatibility. No PCB redesign is required for package-level substitution. Verify component placement and thermal management design if selecting higher power-rated variants (3000W or 5000W) to ensure adequate heat dissipation.

Q: What compliance certifications apply to substitute parts?

A: All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the regulatory status of SMCJ64A-TP. Moisture sensitivity level is MSL 1 (unlimited) for all variants except 5.0SMDJ64A (Taiwan Semiconductor Corporation), which does not specify MSL. Verify specific datasheet requirements for storage and handling conditions if MSL rating is critical to your supply chain process.

Q: Can SMLJ64A (Bourns) be used as a drop-in replacement?

A: SMLJ64A (Bourns) is functionally compatible with identical voltage specifications and DO-214AB package compatibility. However, it provides 3000W peak pulse power versus the original 1500W rating, and REACH status is listed as affected (versus unaffected for SMCJ64A-TP). Verify REACH compliance requirements for your application and end-use region before substitution. Operating temperature range is -55°C ~ 150°C.

Q: What is the temperature operating range difference between substitutes?

A: SMCJ64A-TP and 5.0SMDJ64A (Taiwan Semiconductor) operate to -55°C ~ 175°C. Most direct equivalents and similar substitutes operate to -55°C ~ 150°C. The 5.0SMDJ64A-T7 (Littelfuse) extends the lower temperature limit to -65°C but operates to -55°C ~ 150°C at the upper limit. Applications requiring operation above 150°C should select parts rated to 175°C or verify thermal performance with substitute datasheets.

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