SMLJ48CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMLJ48CE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This 48V bidirectional Zener diode features a 85.5V clamping voltage and 35A peak pulse current capability in a DO-214AB package. The component maintains active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are necessary when addressing supply chain availability, performance requirements variation, or operational temperature range extensions.

Key Parameters

Parameter	Value	Unit
Reverse Standoff Voltage	48	V
Breakdown Voltage (Min)	53.3	V
Clamping Voltage (Max) @ Ipp	85.5	V
Peak Pulse Current (10/1000µs)	35	A
Peak Pulse Power	300	W
Operating Temperature Range	-55 to 150	°C
Package / Case	DO-214AB, SMC	—
Type	Zener (Bidirectional)	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SMLJ48CE3/TR13 is determined by the following critical electrical parameters: 48V reverse standoff voltage, 53.3V minimum breakdown voltage, package format (DO-214AB), and bidirectional zener configuration. Substitute parts must maintain these core electrical specifications while supporting identical or enhanced operational performance metrics.

Substitute parts are grouped by clamping voltage and peak pulse current capability. Parts with 77.4V clamping voltage represent the most direct electrical equivalents, supporting the same voltage protection scheme with varying current handling capabilities (19.4A to 64.7A). The part SMCJ48CA-TR from STMicroelectronics represents a higher-performance variant with 100V clamping voltage and 100A peak pulse current, suitable for applications requiring enhanced transient suppression. Temperature range extensions (up to 175°C for certain variants) accommodate high-reliability applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package / Case	RoHS Status
SMLJ48CE3/TR13	Microchip Technology	48V	53.3V	85.5V	35A	300W	-55 to 150°C	DO-214AB, SMC	ROHS3 Compliant
5.0SMDJ48CA	MDE Semiconductor Inc	48V	53.3V	77.4V	64.7A	5kW	-55 to 150°C	DO-214AB, SMC	ROHS3 Compliant
5.0SMLJ48CA-TP	Micro Commercial Co	48V	53.3V	77.4V	64.7A	5kW	-55 to 175°C	DO-214AB, SMC	ROHS3 Compliant
SMCJ48CA	Fairchild Semiconductor	48V	53.3V	77.4V	19.4A	1.5kW	-55 to 150°C	DO-214AB, SMC	Not specified
SMCJ48CA-13-F	Diodes Incorporated	48V	53.3V	77.4V	19.4A	1.5kW	-55 to 150°C	DO-214AB, SMC	ROHS3 Compliant
SMCJ48CA-TR	STMicroelectronics	48V	53.3V	100V	100A (8/20µs)	1.5kW	-55 to 150°C	DO-214AB, SMC	ROHS3 Compliant
SMDJ48CA	Alpha & Omega Semiconductor Inc.	48V	53.3V	77.4V	38.8A	3kW	-55 to 150°C	DO-214AB, SMC	ROHS3 Compliant
SMDJ48CA-T7	Littelfuse	48V	53.3V	77.4V	38.8A	3kW	-65 to 150°C	DO-214AB, SMC	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed maintain active product status and RoHS3 compliance, meeting regulatory requirements for general-purpose transient voltage suppression applications. The selection between substitutes depends on specific system requirements:

For applications with standard current requirements (up to 35A), the SMCJ48CA variants from Fairchild Semiconductor and Diodes Incorporated provide direct electrical substitution with equivalent clamping behavior and simplified inventory management.

For applications requiring higher current handling (38.8A to 64.7A), the SMDJ48CA series from Alpha & Omega Semiconductor Inc. and the 5.0SMDJ48CA from MDE Semiconductor Inc. offer enhanced peak pulse capability within the same voltage protection parameters.

The 5.0SMLJ48CA-TP from Micro Commercial Co. extends the operating temperature range to 175°C, accommodating high-reliability applications in thermally demanding environments while maintaining all electrical specifications.

The SMCJ48CA-TR from STMicroelectronics provides enhanced clamping voltage (100V) and peak pulse current (100A), suitable for applications requiring increased transient suppression margin beyond standard 48V protection levels.

Frequently Asked Questions (FAQ)

Q: Can I substitute the SMLJ48CE3/TR13 with parts having different clamping voltages? A: Substitution with different clamping voltages is not interchangeable. The SMLJ48CE3/TR13 operates with an 85.5V clamping voltage. Parts with 77.4V or 100V clamping characteristics change the transient suppression response and are only suitable if the application circuit design has been verified to accept the altered clamping behavior.

Q: Are the SMCJ48CA variants from different manufacturers electrically identical? A: While Fairchild Semiconductor's SMCJ48CA and Diodes Incorporated's SMCJ48CA-13-F maintain identical electrical parameters (48V standoff, 77.4V clamping, 19.4A peak pulse), they originate from different manufacturers. Both meet RoHS3 compliance and operate within -55 to 150°C temperature range, providing direct functional equivalence for general-purpose applications.

Q: What advantage does the SMDJ48CA-T7 from Littelfuse provide? A: The SMDJ48CA-T7 extends the lower operating temperature limit to -65°C (compared to -55°C for the original part) while maintaining identical 77.4V clamping voltage and 38.8A peak pulse current in the same DO-214AB package. This extension supports cold-environment applications requiring enhanced low-temperature reliability.

Q: How does the SMCJ48CA-TR differ from other 48V substitutes? A: The SMCJ48CA-TR from STMicroelectronics operates with a 100V clamping voltage and supports 100A peak pulse current, representing a performance upgrade rather than a direct equivalent. This part is suitable for applications where the circuit design accommodates higher clamping voltage and benefits from increased current handling capacity.

Q: Are all substitute parts available in identical packaging? A: All substitute parts listed are available in DO-214AB (SMC) surface-mount packaging, ensuring mechanical compatibility with the original design. Verify the supplier device package designation during procurement to confirm exact package format availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message