SMCJ7.0C Equivalent & Substitute Parts

Part Overview

The SMCJ7.0C is a 7V Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., packaged in DO-214AB (SMC) surface mount configuration. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The SMCJ7.0C provides 12.6V clamping voltage with 125A peak pulse current capability and 1500W peak pulse power dissipation, suitable for general-purpose transient voltage suppression applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMCJ7.0C
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Voltage - Reverse Standoff (Typ)	7V
Voltage - Breakdown (Min)	7.37V
Voltage - Clamping (Max) @ Ipp	12.6V
Current - Peak Pulse (10/1000µs)	125A
Power - Peak Pulse	1500W (1.5kW)
Bidirectional Channels	1
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the SMCJ7.0C are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Voltage - Reverse Standoff (Typ): 7V (exact match required)
Voltage - Clamping (Max) @ Ipp: 12V to 12.6V range (acceptable tolerance)
Current - Peak Pulse (10/1000µs): 125A minimum
Power - Peak Pulse: 1500W minimum
Package / Case: DO-214AB, SMC (mechanical compatibility)
Mounting Type: Surface Mount
Bidirectional Channels: 1

Substitutes are classified into two categories:

Category A - Direct Electrical Equivalents (125A Peak Pulse Current): Parts maintaining the original 125A peak pulse current specification with 12V clamping voltage and 1500W power dissipation. These include SMCJ7.0CA, SMCJ7.0CA-TP, SMCJ7.0CAE3/TR13, SMCJ7V0CA, and TV15C7V0JB-G.

Category B - Enhanced Performance Substitutes (250A Peak Pulse Current): Parts with increased peak pulse current capability (250A) and higher power dissipation (3000W), providing superior transient suppression capacity. These include SMLJ7.0CA, SMLJ7.0CA-TP, and SMLJ7.0CAE3/TR13.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Operating Temperature	Product Status	RoHS Status
SMCJ7.0C	Littelfuse Inc.	7V	7.37V	12.6V	125A	1500W	DO-214AB, SMC	-55°C ~ 150°C	Obsolete	ROHS3 Compliant
SMCJ7.0CA	Taiwan Semiconductor Corporation	7V	7.78V	12V	131A	1500W	DO-214AB, SMC	-55°C ~ 150°C	Active	ROHS3 Compliant
SMCJ7.0CA-TP	Micro Commercial Co	7V	7.8V	12V	125A	1500W	DO-214AB, SMC	-55°C ~ 175°C	Active	ROHS3 Compliant
SMCJ7.0CAE3/TR13	Microchip Technology	7V	7.78V	12V	125A	1500W	DO-214AB, SMC	-65°C ~ 150°C	Active	ROHS3 Compliant
SMCJ7.0CE3/TR13	Microchip Technology	7V	7.78V	13.3V	112.8A	1500W	DO-214AB, SMC	-65°C ~ 150°C	Active	ROHS3 Compliant
SMCJ7V0CA	Fairchild Semiconductor	7V	7.78V	12V	125A	1500W	DO-214AB, SMC	Not specified	Active	Not specified
SMLJ7.0CA	Bourns Inc.	7V	7.78V	12V	250A	3000W	DO-214AB, SMC	-55°C ~ 150°C	Active	ROHS3 Compliant
SMLJ7.0CA-TP	Micro Commercial Co	7V	7.78V	12V	250A	3000W	DO-214AB, SMC	-55°C ~ 175°C	Active	Not specified
SMLJ7.0CAE3/TR13	Microchip Technology	7V	7.78V	12V	250A	300W	DO-214AB, SMC	-55°C ~ 150°C	Active	ROHS3 Compliant
TV15C7V0JB-G	Comchip Technology	7V	7.78V	12V	125A	1500W	DO-214AB, SMC	-55°C ~ 150°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents):

SMCJ7.0CA (Taiwan Semiconductor Corporation), SMCJ7.0CA-TP (Micro Commercial Co), and TV15C7V0JB-G (Comchip Technology) are recommended as primary substitutes. All three maintain the 7V reverse standoff voltage, 12V clamping voltage, 125A peak pulse current, and 1500W power dissipation. All are active products with ROHS3 compliance. SMCJ7.0CA-TP offers extended operating temperature range (-55°C to 175°C) compared to the original specification.

SMCJ7.0CAE3/TR13 (Microchip Technology) provides equivalent electrical performance with extended lower temperature rating (-65°C) and active product status with ROHS3 compliance.

Secondary Substitutes (Enhanced Performance):

SMLJ7.0CA (Bourns Inc.) and SMLJ7.0CA-TP (Micro Commercial Co) provide enhanced transient suppression with 250A peak pulse current and 3000W power dissipation, suitable for applications requiring higher surge capacity. Both maintain 7V reverse standoff and 12V clamping voltage. SMLJ7.0CA-TP offers extended operating temperature range (-55°C to 175°C).

Conditional Substitutes:

SMCJ7.0CE3/TR13 (Microchip Technology) exhibits 13.3V clamping voltage and 112.8A peak pulse current, representing a deviation from the original specification. This part is suitable only when higher clamping voltage is acceptable and lower peak pulse current is tolerable.

SMCJ7V0CA (Fairchild Semiconductor) maintains electrical equivalence but lacks specified operating temperature and RoHS status documentation.

SMLJ7.0CAE3/TR13 (Microchip Technology) shows 300W peak pulse power, which deviates from the 3000W specification typical of SMLJ series parts and requires verification before selection.

Frequently Asked Questions (FAQ)

Q: Can SMCJ7.0CA directly replace SMCJ7.0C?

A: Yes. SMCJ7.0CA maintains the critical electrical parameters: 7V reverse standoff voltage, 12V clamping voltage, 125A peak pulse current (exceeding the original 125A specification by 6A), and 1500W power dissipation. Both use DO-214AB SMC packaging. SMCJ7.0CA is an active product with ROHS3 compliance, addressing the obsolescence of the original part.

Q: What is the difference between SMCJ and SMLJ series substitutes?

A: SMCJ series parts (SMCJ7.0CA, SMCJ7.0CA-TP) maintain the original 125A peak pulse current and 1500W power dissipation. SMLJ series parts (SMLJ7.0CA, SMLJ7.0CA-TP) provide enhanced performance with 250A peak pulse current and 3000W power dissipation. Both series maintain 7V reverse standoff and 12V clamping voltage. SMLJ substitutes are suitable for applications requiring higher transient suppression capacity.

Q: Are all substitutes available in the same packaging?

A: All listed substitutes use DO-214AB SMC surface mount packaging, ensuring mechanical compatibility with the original SMCJ7.0C. Packaging variants (Tape & Reel, Bulk) differ by supplier but do not affect electrical performance or PCB mounting compatibility.

Q: Which substitute offers the widest operating temperature range?

A: SMCJ7.0CA-TP and SMLJ7.0CA-TP, both from Micro Commercial Co, offer -55°C to 175°C operating temperature range, extending the upper limit by 25°C compared to the original -55°C to 150°C specification.

Q: Can SMCJ7.0CE3/TR13 be used as a substitute?

A: SMCJ7.0CE3/TR13 exhibits 13.3V clamping voltage and 112.8A peak pulse current, both deviating from the original 12.6V and 125A specifications. This part is suitable only when circuit design tolerates higher clamping voltage and lower peak pulse current capability.

Q: What compliance certifications are critical for selection?

A: ROHS3 compliance is specified for the original SMCJ7.0C and most active substitutes. All recommended primary substitutes (SMCJ7.0CA, SMCJ7.0CA-TP, TV15C7V0JB-G, SMCJ7.0CAE3/TR13) maintain ROHS3 compliance. Verify compliance requirements for your specific application before final selection.

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