SMLJ30CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMLJ30CE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. The device features a 30V reverse standoff voltage with a 53.5V maximum clamping voltage and 56A peak pulse current rating. This part is currently active in production with full RoHS3 compliance. Equivalent and substitute parts are identified based on matching electrical performance parameters and package compatibility, enabling alternative sourcing when the primary part is unavailable or when application requirements allow for performance variations within specified tolerances.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMLJ30CE3/TR13
Manufacturer	Microchip Technology
Category	Transient Voltage Suppressors (TVS)
Package / Case	DO-214AB, SMC
Voltage - Reverse Standoff (Typ)	30V
Voltage - Breakdown (Min)	33.3V
Voltage - Clamping (Max) @ Ipp	53.5V
Current - Peak Pulse (10/1000µs)	56A
Power - Peak Pulse	300W
Operating Temperature Range	-55°C to 150°C (TJ)
Type	Zener
Bidirectional Channels	1
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SMLJ30CE3/TR13 are qualified based on the following critical parameters that must align with the primary device specifications:

Voltage Parameters: Reverse standoff voltage of 30V (Typ) with minimum breakdown voltage of 33.3V are the primary electrical characteristics defining the substitution domain. Clamping voltage performance ranges from 48.4V to 53.5V across qualified substitutes.

Current and Power Ratings: Peak pulse current ranges from 31A to 103A across qualified parts, with corresponding power dissipation capability from 1.5kW to 5kW. Selection depends on application transient energy requirements.

Package Compatibility: All substitute parts utilize the DO-214AB (SMC) surface-mount package, ensuring mechanical and thermal compatibility with PCB footprints designed for the primary part.

Environmental and Compliance Requirements: All substitute parts meet RoHS3 compliance and share identical ECCN (EAR99) and HTSUS classifications, ensuring supply chain and regulatory interchangeability.

Temperature Operating Range: Primary device operates from -55°C to 150°C. Most substitutes maintain this range; one variant extends to 175°C, and one supports -65°C minimum.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature Range	Product Status	RoHS Status
SMLJ30CE3/TR13	Microchip Technology	30V	53.5V	56A	300W	-55°C to 150°C	Active	ROHS3 Compliant
5.0SMDJ30CA	MDE Semiconductor Inc	30V	48.4V	103A	5000W (5kW)	-55°C to 150°C	Active	ROHS3 Compliant
5.0SMDJ30CA-T7	Littelfuse Inc.	30V	48.4V	103A	5000W (5kW)	-65°C to 150°C	Active	ROHS3 Compliant
SMC3K30CAHM3/57	Vishay General Semiconductor - Diodes Division	30V	48.4V	62A	3000W (3kW)	-55°C to 150°C	Active	ROHS3 Compliant
SMCJ30CA	MDD	30V	48.4V	31A	1500W (1.5kW)	-50°C to 150°C	Active	ROHS3 Compliant
SMCJ30CA-13-F	Diodes Incorporated	30V	48.4V	31A	1500W (1.5kW)	-55°C to 150°C	Active	ROHS3 Compliant
SMCJ30CA-TP	Micro Commercial Co	30V	48.4V	31A	1500W (1.5kW)	-55°C to 175°C	Active	ROHS3 Compliant
SMDJ30CA	Alpha & Omega Semiconductor Inc.	30V	48.4V	62A	3000W (3kW)	-55°C to 150°C	Active	ROHS3 Compliant
SMLJ30CA	Bourns Inc.	30V	48.4V	62A	3000W (3kW)	-55°C to 150°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed above are qualified alternatives based on product status (Active), regulatory compliance (RoHS3), and identical classification codes (ECCN: EAR99, HTSUS: 8541.10.0080). Selection among substitutes depends on matching application-specific requirements for peak pulse current and power dissipation capacity.

For applications requiring the highest current handling and power dissipation, the 5.0SMDJ30CA and 5.0SMDJ30CA-T7 (103A, 5kW) provide superior transient energy absorption. The 5.0SMDJ30CA-T7 variant from Littelfuse extends the minimum operating temperature to -65°C.

For applications with moderate transient requirements, the SMC3K30CAHM3/57 (Vishay) and SMDJ30CA (Alpha & Omega) or SMLJ30CA (Bourns) offer balanced performance at 62A and 3kW, suitable for 3000W transient pulses.

For space-constrained or lower-energy applications, SMCJ30CA variants (31A, 1.5kW) from MDD, Diodes Incorporated, and Micro Commercial Co provide functional equivalence at reduced power ratings. The SMCJ30CA-TP from Micro Commercial Co supports extended temperature operation to 175°C when thermal performance is critical.

The SMC3K30CAHM3/57 from Vishay carries AEC-Q101 automotive qualification and TransZorb® series designation, suitable for automotive and industrial applications where third-party qualification is required.

Frequently Asked Questions (FAQ)

Q: What determines if a substitute part is electrically compatible with the SMLJ30CE3/TR13?

A: Electrical compatibility is established through matching voltage parameters: 30V reverse standoff and 33.3V minimum breakdown voltage. All listed substitutes maintain these core voltage specifications. Clamping voltage (48.4V to 53.5V) and current/power ratings determine transient energy handling capacity but do not prevent substitution in applications with lower energy requirements.

Q: Can I use a substitute with lower current or power rating than the original part?

A: Lower ratings require application reassessment. If the original 56A / 300W specification was selected to handle expected transient energy, a substitute with 31A / 1.5kW rating (such as SMCJ30CA variants) may be insufficient. Substitutes with 62A / 3kW capability (SMC3K30CAHM3/57, SMDJ30CA, SMLJ30CA) provide margin over the original device.

Q: Are all substitute parts in the same surface-mount package?

A: All substitutes use the DO-214AB (SMC) surface-mount package, ensuring compatibility with existing PCB footprints and assembly processes without design modifications.

Q: Does reverse standoff voltage differ across substitute parts?

A: No. All substitute parts maintain the 30V reverse standoff voltage specification, meeting the primary circuit protection requirement. This parameter is non-negotiable for substitution.

Q: Which substitute offers the widest operating temperature range?

A: The SMCJ30CA-TP (Micro Commercial Co) extends maximum operating temperature to 175°C, compared to 150°C for most alternatives and 165°C maximum for other high-current variants. The 5.0SMDJ30CA-T7 (Littelfuse) extends the minimum operating temperature to -65°C.

Q: What is the significance of the automotive-grade SMC3K30CAHM3/57?

A: The SMC3K30CAHM3/57 carries AEC-Q101 automotive qualification from Vishay, suitable for applications requiring third-party reliability certification. This does not affect electrical interchangeability but indicates suitability for automotive-grade supply chain requirements.

Q: If my circuit is designed for 30V protection, are all substitutes interchangeable?

A: All substitutes maintain the 30V reverse standoff and 33.3V breakdown thresholds, ensuring functional protection equivalence. However, circuit performance depends on transient duration and energy. Substitutes with higher current/power ratings (103A / 5kW) provide superior energy absorption and faster clamping response; lower-rated variants (31A / 1.5kW) function equivalently for lower-energy transients but may exhibit slightly higher clamping voltage under high-energy conditions.

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