SMLJ54CE3/TR13

Part Overview

The SMLJ54CE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, classified as a unidirectional Zener-type device in the DO-214AB surface mount package. This component is designed for general-purpose overvoltage protection applications with a 54V reverse standoff voltage and 96.3V maximum clamping voltage. The product maintains Active status and is ROHS3 compliant. Alternative substitute parts are necessary to address supply chain availability, performance optimization for specific current requirements, or packaging preferences while maintaining electrical compatibility within the 54V nominal voltage class and DO-214AB form factor.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	54	V
Voltage - Breakdown (Min)	60	V
Voltage - Clamping (Max) @ Ipp	96.3	V
Current - Peak Pulse (10/1000µs)	31.2	A
Power - Peak Pulse	300	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AB, SMC	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the SMLJ54CE3/TR13 are qualified based on the following electrical and mechanical parameters:

Primary Compatibility Criteria:

Voltage - Reverse Standoff (Typ): 54V
Voltage - Breakdown (Min): 60V
Package / Case: DO-214AB (SMC)
Type: Zener, Bidirectional Channels: 1
Operating Temperature Range: -55°C to 150°C
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Performance Variation Parameters: Substitute parts in this category permit variations in voltage clamping (87.1V vs 96.3V) and peak pulse current (17.2A to 57.5A), which result in different peak pulse power ratings (1.5kW to 5kW). These variations allow selection based on specific circuit protection requirements while maintaining the 54V nominal voltage protection threshold.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Breakdown Min (V)	Voltage - Clamping Max @ Ipp (V)	Current - Peak Pulse (A)	Power - Peak Pulse (W)	Operating Temperature (°C)	Package	RoHS Status
SMLJ54CE3/TR13	Microchip Technology	54	60	96.3	31.2	300	-55 to 150	DO-214AB, SMC	ROHS3
5.0SMDJ54CA	MDE Semiconductor Inc	54	60	87.1	57.5	5000	-55 to 150	DO-214AB, SMC	ROHS3
SMC3K54CA-M3/57	Vishay General Semiconductor - Diodes Division	54	60	87.1	34.4	3000	-55 to 150	DO-214AB, SMC	ROHS3
SMCJ54CA	Meritek	54	60	87.1	17.22	1500	-55 to 150	DO-214AB, SMC	ROHS3
SMCJ54CA-13-F	Diodes Incorporated	54	60	87.1	17.2	1500	-55 to 150	DO-214AB, SMC	ROHS3
SMDJ54CA	Alpha & Omega Semiconductor Inc.	54	60	87.1	34.5	3000	-55 to 150	DO-214AB, SMC	ROHS3

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and ROHS3 compliance, meeting the same regulatory and environmental standards as the primary SMLJ54CE3/TR13 device. Selection among substitutes depends on application-specific peak pulse current handling requirements:

5.0SMDJ54CA (57.5A peak pulse) provides maximum current capacity for high-energy transient suppression with 5kW peak pulse power dissipation.
SMC3K54CA-M3/57 and SMDJ54CA (34.4A and 34.5A respectively) offer balanced current handling with 3kW peak pulse power, suitable for moderate protection requirements.
SMCJ54CA and SMCJ54CA-13-F (17.22A and 17.2A respectively) provide minimum current specification with 1.5kW peak pulse power for lower-energy circuits.

All substitutes share identical voltage protection parameters (54V standoff, 60V breakdown minimum), temperature operating range, and surface mount DO-214AB packaging, ensuring mechanical compatibility and thermal performance equivalence.

Frequently Asked Questions (FAQ)

Q: Can SMCJ54CA directly replace SMLJ54CE3/TR13?

A: Yes. Both devices share identical Voltage - Reverse Standoff (54V), Voltage - Breakdown (60V minimum), operating temperature range (-55°C to 150°C), and DO-214AB package specification. The SMCJ54CA features lower peak pulse current (17.22A vs 31.2A) and reduced power dissipation (1.5kW vs 300W), making it suitable for applications requiring lower transient energy suppression.

Q: What is the difference between the 87.1V and 96.3V clamping voltages?

A: Both voltages fall within acceptable protection thresholds for 54V nominal circuits. The SMLJ54CE3/TR13 specifies 96.3V maximum clamping, while most substitutes specify 87.1V maximum clamping. This represents the voltage level at which the device conducts under peak pulse current conditions. The choice depends on circuit tolerance for voltage transients.

Q: Are there packaging differences between substitutes?

A: All listed substitutes use the DO-214AB (SMC) surface mount package, maintaining identical footprint and soldering characteristics. Packaging format variations (Tape & Reel vs Cut Tape) affect supply and handling but do not impact electrical or mechanical compatibility.

Q: Which substitute offers the best performance for high-energy transients?

A: The 5.0SMDJ54CA provides the highest peak pulse current (57.5A) and power dissipation capacity (5kW), suitable for protecting circuits experiencing high-energy voltage transients while maintaining the 54V voltage protection threshold.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status identical to the SMLJ54CE3/TR13, meeting environmental and regulatory requirements for lead-free operation.

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