SMCJ26C Equivalent & Substitute Parts

Part Overview

The SMCJ26C is a 26V Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 44.21V maximum clamping voltage, 35.7A peak pulse current capability, and 1500W peak pulse power rating in a DO-214AB (SMC) package.

The SMCJ26C is classified as obsolete. Equivalent and substitute parts are available from multiple active manufacturers, offering identical or compatible electrical and mechanical specifications suitable for direct replacement in circuit designs.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	26V
Voltage - Breakdown (Min)	27.36V
Voltage - Clamping (Max) @ Ipp	44.21V
Current - Peak Pulse (10/1000µs)	35.7A
Power - Peak Pulse	1500W
Operating Temperature Range	-55°C to 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	DO-214AB, SMC
Type	Zener
Bidirectional Channels	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SMCJ26C are grouped based on the following critical electrical and mechanical parameters:

Voltage - Reverse Standoff: 26V (exact match required)
Voltage - Clamping (Max) @ Ipp: 42.1V to 46.6V (acceptable range for protection circuit compatibility)
Current - Peak Pulse (10/1000µs): 35.6A to 71.2A (equal or greater capability)
Power - Peak Pulse: 1500W to 3000W (equal or greater capability)
Package / Case: DO-214AB, SMC (identical mechanical form factor)
Mounting Type: Surface Mount (identical)
Operating Temperature: -55°C to 150°C minimum (equal or extended range acceptable)
RoHS Status: ROHS3 Compliant (regulatory compliance maintained)

Substitutes are divided into two categories:

Category A - Direct Electrical Equivalents (1500W Power Rating): SMCJ26CA, SMCJ26CA-TP, SMCJ26CAE3/TR13, TV15C260JB-G. These parts maintain the original 1500W peak pulse power specification with clamping voltages between 42.1V and 46.6V.

Category B - Enhanced Performance Alternatives (3000W Power Rating): SMLJ26CA, SMLJ26CA-TP, SMLJ26CAE3/TR13. These parts provide double the peak pulse power (3000W) with higher peak pulse current (71.2A) while maintaining the same 26V standoff voltage and compatible clamping voltage range.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse	Power - Peak Pulse	Operating Temperature	Package	Product Status
SMCJ26C	Littelfuse Inc.	26V	44.21V	35.7A	1500W	-55°C to 150°C	DO-214AB, SMC	Obsolete
SMCJ26CA	EVVO Semi	26V	42.1V	35.7A	1500W	-55°C to 150°C	DO-214AB, SMC	Active
SMCJ26CA-TP	Micro Commercial Co	26V	42.1V	35.7A	1500W	-55°C to 175°C	DO-214AB, SMC	Active
SMCJ26CAE3/TR13	Microchip Technology	26V	42.1V	35.6A	1500W	-65°C to 150°C	DO-214AB, SMC	Active
SMCJ26CE3/TR13	Microchip Technology	26V	46.6V	32.2A	1500W	-65°C to 150°C	DO-214AB, SMC	Active
SMLJ26CA	Bourns Inc.	26V	42.1V	71.2A	3000W	-55°C to 150°C	DO-214AB, SMC	Active
SMLJ26CA-TP	Micro Commercial Co	26V	42.1V	71.2A	3000W	-55°C to 175°C	DO-214AB, SMC	Active
SMLJ26CAE3/TR13	Microchip Technology	26V	42.1V	71.2A	300W	-55°C to 150°C	DO-214AB, SMC	Active
TV15C260JB-G	Comchip Technology	26V	42.1V	35.63A	1500W	-55°C to 150°C	DO-214AB, SMC	Active

Engineering Selection Recommendations

For Direct Replacement (Equivalent Performance):

SMCJ26CA, SMCJ26CA-TP, and TV15C260JB-G are functionally equivalent to the SMCJ26C. All three maintain the 26V standoff voltage, 1500W peak pulse power rating, and DO-214AB package. SMCJ26CA-TP and SMLJ26CA-TP offer extended operating temperature ranges to 175°C, suitable for high-temperature environments. All substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings.

For Enhanced Protection (Higher Power Dissipation):

SMLJ26CA and SMLJ26CA-TP provide 3000W peak pulse power with 71.2A peak pulse current, doubling the energy absorption capability while maintaining the same 26V standoff voltage and compatible clamping voltage. These parts are suitable for applications requiring higher transient energy suppression.

For Extended Temperature Range:

SMCJ26CAE3/TR13 and SMLJ26CAE3/TR13 (Microchip Technology) support operating temperatures from -65°C to 150°C, extending the lower temperature limit by 10°C compared to the original SMCJ26C specification.

Packaging Considerations:

All substitute parts are available in DO-214AB (SMC) surface-mount package. Packaging options include Cut Tape (CT), Digi-Reel, and Tape & Reel (TR) formats. Selection depends on procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can SMLJ26CA replace SMCJ26C directly?

A: Yes. SMLJ26CA is mechanically and electrically compatible. Both use the DO-214AB (SMC) package and maintain the 26V standoff voltage. The primary difference is higher peak pulse current (71.2A vs. 35.7A) and power rating (3000W vs. 1500W), which provides enhanced protection capability without affecting circuit compatibility.

Q: What is the difference between SMCJ26CA and SMCJ26CA-TP?

A: Both parts are electrically identical with 26V standoff voltage, 42.1V clamping voltage, and 1500W power rating. SMCJ26CA-TP is supplied in Tape & Reel format with an extended operating temperature range to 175°C, compared to SMCJ26CA's standard -55°C to 150°C range. Selection depends on packaging requirements and thermal environment.

Q: Is SMCJ26CE3/TR13 a suitable substitute?

A: SMCJ26CE3/TR13 is compatible from a mechanical and standoff voltage perspective (26V). However, its clamping voltage is 46.6V compared to the original 44.21V, and peak pulse current is lower at 32.2A. This part is suitable only if the circuit design tolerates the higher clamping voltage and lower current capability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings, maintaining regulatory compliance with the original SMCJ26C specification.

Q: What packaging formats are available for these substitutes?

A: Substitute parts are available in Cut Tape (CT), Digi-Reel, and Tape & Reel (TR) formats. Selection depends on procurement volume and assembly line requirements. All parts maintain the DO-214AB (SMC) surface-mount package form factor.

Q: Can I use TV15C260JB-G as a drop-in replacement?

A: Yes. TV15C260JB-G is a direct functional equivalent with identical 26V standoff voltage, 42.1V clamping voltage, 35.63A peak pulse current, and 1500W power rating. It uses the same DO-214AB (SMC) package and is ROHS3 compliant.

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