SMCJ26CA-13 Equivalent & Substitute Parts

Part Overview

The SMCJ26CA-13 is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a 26V reverse standoff voltage and provides 42.1V clamping at peak pulse current. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for circuit protection applications.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	26V
Voltage - Breakdown (Min)	28.9V
Voltage - Clamping (Max) @ Ipp	42.1V
Current - Peak Pulse (10/1000µs)	35.6A
Power - Peak Pulse	1500W
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 150°C (TJ)
Type	Zener
Bidirectional Channels	1

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Voltage - Reverse Standoff: 26V
Voltage - Breakdown (Min): 28.9V
Voltage - Clamping (Max) @ Ipp: 42.1V
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Bidirectional Channels: 1
Type: Zener

Allowable Variation Parameters:

Current - Peak Pulse (10/1000µs): 35.6A or higher
Power - Peak Pulse: 1500W or higher
Operating Temperature Range: -55°C minimum to 150°C maximum or wider

Substitute parts are grouped into two categories based on current and power ratings:

Category A (Direct Electrical Equivalents): Parts with 35.6A–35.7A peak pulse current and 1500W peak pulse power. These provide identical electrical performance to the original SMCJ26CA-13.

Category B (Enhanced Performance Equivalents): Parts with higher peak pulse current (71.2A–119A) and higher peak pulse power (3000W–5000W). These provide superior transient protection capability while maintaining voltage compatibility.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Clamping @ Ipp	Current - Peak Pulse	Power - Peak Pulse	Package	Product Status	RoHS Status
SMCJ26CA-13	Diodes Incorporated	26V	42.1V	35.6A	1500W	DO-214AB, SMC	Discontinued	Non-compliant
SMCJ26CA-13-F	Diodes Incorporated	26V	42.1V	35.6A	1500W	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ26CA	EVVO Semi	26V	42.1V	35.7A	1500W	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ26CA-TP	Micro Commercial Co	26V	42.1V	35.7A	1500W	DO-214AB, SMC	Active	ROHS3 Compliant
SMDJ26CA	Alpha & Omega Semiconductor Inc.	26V	42.1V	71.3A	3000W	DO-214AB, SMC	Active	ROHS3 Compliant
SMDJ26CA-T7	Littelfuse Inc.	26V	42.1V	71.3A	3000W	DO-214AB, SMC	Active	ROHS3 Compliant
SMLJ26CA	Bourns Inc.	26V	42.1V	71.2A	3000W	DO-214AB, SMC	Active	ROHS3 Compliant
5.0SMDJ26CA	MDE Semiconductor Inc	26V	42.1V	119A	5000W	DO-214AB, SMC	Active	ROHS3 Compliant
5.0SMDJ26CA-T7	Littelfuse Inc.	26V	42.1V	119A	5000W	DO-214AB, SMC	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Performance):

SMCJ26CA-13-F (Diodes Incorporated) is the primary direct replacement. It maintains identical electrical specifications while offering active product status and ROHS3 compliance. Packaging is Tape & Reel (TR), suitable for automated assembly.

SMCJ26CA (EVVO Semi) and SMCJ26CA-TP (Micro Commercial Co) provide equivalent electrical performance with marginally higher peak pulse current (35.7A vs. 35.6A). Both are active products with ROHS3 compliance. SMCJ26CA-TP supports extended operating temperature to 175°C.

Enhanced Performance Alternatives:

SMDJ26CA (Alpha & Omega Semiconductor Inc.), SMDJ26CA-T7 (Littelfuse Inc.), and SMLJ26CA (Bourns Inc.) provide doubled peak pulse current (71.2A–71.3A) and doubled power dissipation (3000W). These are suitable for applications requiring higher transient energy absorption while maintaining identical voltage protection characteristics.

5.0SMDJ26CA (MDE Semiconductor Inc) and 5.0SMDJ26CA-T7 (Littelfuse Inc.) provide the highest performance tier with 119A peak pulse current and 5000W power dissipation. These are appropriate for high-energy transient environments.

All substitute parts are ROHS3 compliant and maintain the DO-214AB (SMC) package footprint for direct PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can SMCJ26CA-13 be replaced with a higher-current TVS diode like SMDJ26CA?

A: Yes. Higher peak pulse current and power ratings provide enhanced transient protection while maintaining identical voltage clamping characteristics (26V standoff, 42.1V clamp). The circuit will function correctly with improved overvoltage suppression capability. Package footprint remains identical (DO-214AB, SMC).

Q: What is the difference between SMCJ26CA-13-F and SMCJ26CA-13?

A: SMCJ26CA-13-F is the active production variant with Tape & Reel packaging and ROHS3 compliance. The original SMCJ26CA-13 is discontinued. Electrical specifications are identical.

Q: Are all substitute parts compatible with the original PCB layout?

A: Yes. All substitute parts use the DO-214AB (SMC) package, which maintains identical footprint and pin configuration. No PCB redesign is required.

Q: Which substitute offers the best availability?

A: SMCJ26CA-TP (Micro Commercial Co) reports 30,636 pieces in stock. SMCJ26CA (EVVO Semi) reports 18,611 pieces. Both provide immediate availability for high-volume requirements.

Q: Can I use 5.0SMDJ26CA-T7 in place of SMCJ26CA-13?

A: Yes. The 5.0SMDJ26CA-T7 maintains identical voltage specifications and provides superior transient energy handling (119A peak pulse, 5000W power). Operating temperature range extends to -65°C minimum. This is a direct functional upgrade.

Q: What does ROHS3 compliance mean for this component?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. The original SMCJ26CA-13 is non-compliant; all active substitutes are ROHS3 compliant.

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