SMLJ26CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMLJ26CE3/TR13 is an active transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This surface-mount component operates across a junction temperature range of -55°C to 150°C and is classified as RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1). The need for equivalent parts arises from supply chain management, availability requirements, performance optimization for specific application demands, and cost considerations across different manufacturers and packaging configurations.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMLJ26CE3/TR13
Manufacturer	Microchip Technology
Category	Transient Voltage Suppressors (TVS)
Package / Case	DO-214AB, SMC
Type	Zener
Bidirectional Channels	1
Voltage - Reverse Standoff (Typ)	26V
Voltage - Breakdown (Min)	28.9V
Voltage - Clamping (Max) @ Ipp	46.6V
Current - Peak Pulse (10/1000µs)	64.4A
Power - Peak Pulse	300W
Mounting Type	Surface Mount
Operating Temperature (TJ)	-55°C ~ 150°C
RoHS Status	RoHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution of the SMLJ26CE3/TR13 is determined by the following critical electrical and mechanical parameters, which must align with the original specification:

Critical Fixed Parameters:

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

Acceptable Variation Parameters:

Voltage - Clamping (Max) @ Ipp: Substitute parts may exhibit lower clamping voltages (ranging from 42.1V to 46.6V), which provides equal or improved overvoltage suppression capability
Current - Peak Pulse (10/1000µs): Substitute parts may provide higher peak pulse current ratings (35.6A to 119A), enabling enhanced protection performance
Power - Peak Pulse: Substitute parts may offer higher power dissipation ratings (1.5kW to 5kW), supporting increased energy absorption

Compatible Compliance Parameters:

RoHS3 Compliant (all substitute parts meet this requirement)
Moisture Sensitivity Level (MSL) 1 (all substitute parts maintain this rating)
Product Status: Active (all substitute parts are currently active)
Operating Temperature Range: Substitute parts operate within -55°C to 175°C, encompassing the original specification

The substitute parts listed below maintain electrical compatibility while offering equivalent or superior performance characteristics within the application context.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature (TJ)	RoHS Status
SMLJ26CE3/TR13	Microchip Technology	26V	28.9V	46.6V	64.4A	300W	-55°C ~ 150°C	RoHS3 Compliant
5.0SMDJ26CA	MDE Semiconductor Inc	26V	28.9V	42.1V	119A	5000W (5kW)	-55°C ~ 150°C	RoHS3 Compliant
SMC3K26CAHM3/57	Vishay General Semiconductor - Diodes Division	26V	28.9V	42.1V	71.3A	3000W (3kW)	-55°C ~ 150°C	RoHS3 Compliant
SMCJ26CA	EVVO Semi	26V	28.9V	42.1V	35.7A	1500W (1.5kW)	-55°C ~ 150°C	RoHS3 Compliant
SMCJ26CA-13-F	Diodes Incorporated	26V	28.9V	42.1V	35.6A	1500W (1.5kW)	-55°C ~ 150°C	RoHS3 Compliant
SMCJ26CA-TP	Micro Commercial Co	26V	28.9V	42.1V	35.7A	1500W (1.5kW)	-55°C ~ 175°C	RoHS3 Compliant
SMDJ26CA	Alpha & Omega Semiconductor Inc.	26V	28.9V	42.1V	71.3A	3000W (3kW)	-55°C ~ 150°C	RoHS3 Compliant
SMDJ26CA-T7	Littelfuse Inc.	26V	28.9V	42.1V	71.3A	3000W (3kW)	-65°C ~ 150°C	RoHS3 Compliant
SMLJ26CA	Bourns Inc.	26V	28.9V	42.1V	71.2A	3000W (3kW)	-55°C ~ 150°C	RoHS3 Compliant

Engineering Selection Recommendations

All substitute parts maintain active product status and RoHS3 compliance. Selection between the SMLJ26CE3/TR13 and substitute parts depends on application-specific performance requirements within the following considerations:

Higher Power Dissipation Applications: The 5.0SMDJ26CA (5kW), SMC3K26CAHM3/57 (3kW), SMDJ26CA (3kW), SMDJ26CA-T7 (3kW), and SMLJ26CA (3kW) accommodate elevated energy absorption demands compared to the original specification (300W). These parts are suitable for circuits requiring robust transient suppression with higher energy events.

Lower Power Dissipation Applications: The SMCJ26CA (EVVO Semi) and SMCJ26CA-13-F (Diodes Incorporated) with 1.5kW power ratings are appropriate for applications where the original 300W specification provides excess capability, enabling cost optimization without performance compromise.

Extended Temperature Range: The SMCJ26CA-TP operates across -55°C to 175°C, extending the upper temperature limit by 25°C beyond the original specification. The SMDJ26CA-T7 extends the lower temperature limit to -65°C for low-temperature applications.

Automotive-Grade Requirement: The SMC3K26CAHM3/57 carries automotive-grade classification with AEC-Q101 qualification, meeting automotive reliability and qualification standards for safety-critical applications.

All substitute parts maintain the critical fixed parameters: 26V reverse standoff voltage, 28.9V minimum breakdown voltage, single bidirectional channel configuration, surface-mount installation, and DO-214AB/SMC package geometry.

Frequently Asked Questions (FAQ)

Q: Can I substitute the SMLJ26CE3/TR13 with any of the listed parts? A: Substitution is permissible when the application circuit tolerates the electrical parameter variations listed in the Parameter Comparison table. The critical fixed parameters (26V reverse standoff, 28.9V breakdown voltage, 1 channel, surface mount) are maintained across all substitute parts. Verify that the substitute part's power dissipation rating and peak pulse current capability align with circuit design requirements.

Q: What is the difference between substitute parts with different power ratings? A: Power dissipation rating indicates the energy the TVS diode can safely absorb during transient suppression events. The original SMLJ26CE3/TR13 specifies 300W peak pulse power. Substitute parts range from 1.5kW to 5kW, enabling selection based on the magnitude and duration of transient energy in the target circuit. Higher power ratings do not negatively affect lower-energy applications.

Q: Are the clamping voltage variations significant? A: The original SMLJ26CE3/TR13 clamps at 46.6V maximum, while most substitute parts clamp at 42.1V maximum. Lower clamping voltage provides improved overvoltage suppression performance, reducing the maximum voltage stress on protected circuitry. This represents an enhancement rather than a limitation for most applications.

Q: What packaging configurations are available? A: All substitute parts utilize the DO-214AB/SMC surface-mount package, maintaining identical footprint and layout compatibility with the original specification. Packaging differs only in supplier reel configurations (Tape & Reel or Cut Tape), which do not affect component functionality.

Q: Which substitute part should I select for automotive applications? A: The SMC3K26CAHM3/57 manufactured by Vishay General Semiconductor carries automotive-grade designation with AEC-Q101 qualification, meeting automotive reliability standards. This part is suitable for safety-critical automotive circuits requiring third-party qualification verification.

Q: Can I use parts with different operating temperature ranges? A: Substitute parts operate within -55°C to 175°C ranges, which encompass or exceed the original specification of -55°C to 150°C. The SMDJ26CA-T7 extends the lower limit to -65°C for enhanced low-temperature performance. Selection depends on the circuit's actual operating temperature requirements.

Q: Do all substitute parts meet RoHS3 compliance? A: All listed substitute parts maintain RoHS3 compliance and Moisture Sensitivity Level 1 (unlimited), matching the regulatory requirements of the original SMLJ26CE3/TR13 specification.

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