SMCJ150A-13 Equivalent & Substitute Parts

Part Overview

The SMCJ150A-13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 150V reverse standoff voltage with a 243V maximum clamping voltage and 6.2A peak pulse current capability in a DO-214AB (SMC) package. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	150	V
Voltage - Breakdown (Min)	167	V
Voltage - Clamping (Max) @ Ipp	243	V
Current - Peak Pulse (10/1000µs)	6.2	A
Power - Peak Pulse	1500	W
Operating Temperature Range	-55 to 150	°C
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitute parts for the SMCJ150A-13 are classified into two functional groups based on electrical performance:

Group 1: Direct Electrical Equivalents These parts maintain identical electrical specifications: 150V reverse standoff voltage, 167V minimum breakdown voltage, 243V maximum clamping voltage, and 6.2A peak pulse current. All parts in this group are housed in the DO-214AB (SMC) surface-mount package and operate within the -55°C to 150°C temperature range. Substitution within this group is based on matching these core parameters exactly.

Group 2: Enhanced Performance Alternatives These parts exceed the original specifications in peak pulse current (12.4A to 20.6A) and power dissipation (3000W to 5000W) while maintaining the same voltage ratings (150V standoff, 243V clamping). These alternatives provide higher transient energy absorption capability within the same package footprint and are suitable for applications requiring additional margin or higher surge protection levels.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Clamping (V)	Current - Peak Pulse (A)	Power - Peak Pulse (W)	Operating Temp (°C)	Package	Product Status	RoHS Status
SMCJ150A-13	Diodes Incorporated	150	243	6.2	1500	-55 to 150	DO-214AB, SMC	Discontinued	Non-compliant
SMCJ150A-13-F	Diodes Incorporated	150	243	6.2	1500	-55 to 150	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ150A	Fairchild Semiconductor	150	243	6.2	1500	-55 to 150	DO-214AB, SMC	Active	Not specified
SMCJ150A-TP	Micro Commercial Co	150	243	6.2	1500	-55 to 175	DO-214AB, SMC	Active	ROHS3 Compliant
5.0SMDJ150A	MDE Semiconductor Inc	150	243	20.6	5000	-55 to 150	DO-214AB, SMC	Active	ROHS3 Compliant
5.0SMDJ150A-T7	Littelfuse	150	243	20.6	5000	-65 to 150	DO-214AB, SMC	Active	ROHS3 Compliant
SMDJ150A	Alpha & Omega Semiconductor Inc.	150	243	12.4	3000	-55 to 150	DO-214AB, SMC	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents)

SMCJ150A-13-F from Diodes Incorporated is the preferred direct replacement. It maintains identical electrical specifications and package configuration while offering active product status and ROHS3 compliance, addressing the regulatory requirements that the original discontinued part does not meet.

SMCJ150A-TP from Micro Commercial Co provides equivalent electrical performance with an extended upper operating temperature limit of 175°C and ROHS3 compliance. This option is suitable for applications requiring higher thermal margins.

SMCJ150A from Fairchild Semiconductor offers electrical equivalence with active availability. Compliance status is not specified in the provided data.

Secondary Substitutes (Enhanced Performance)

5.0SMDJ150A from MDE Semiconductor Inc and 5.0SMDJ150A-T7 from Littelfuse provide identical voltage ratings with increased peak pulse current (20.6A) and power dissipation (5000W). These parts are suitable for applications where the original 6.2A specification represents a design margin constraint or where higher transient energy absorption is required. Both are ROHS3 compliant and actively produced.

SMDJ150A from Alpha & Omega Semiconductor Inc offers intermediate performance with 12.4A peak pulse current and 3000W power dissipation, providing a middle-ground option between direct equivalence and maximum performance alternatives.

Frequently Asked Questions (FAQ)

Q: Can SMCJ150A-13-F be used as a direct replacement for SMCJ150A-13?

A: Yes. SMCJ150A-13-F maintains identical electrical specifications: 150V reverse standoff, 243V clamping voltage, and 6.2A peak pulse current. Both use the DO-214AB (SMC) surface-mount package. The primary difference is product status (active vs. discontinued) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between Group 1 and Group 2 substitutes?

A: Group 1 substitutes (SMCJ150A-13-F, SMCJ150A, SMCJ150A-TP) maintain the original 6.2A peak pulse current specification. Group 2 substitutes (5.0SMDJ150A, 5.0SMDJ150A-T7, SMDJ150A) provide higher peak pulse current ratings (12.4A to 20.6A) and greater power dissipation capability (3000W to 5000W) while preserving voltage ratings. Group 2 parts are suitable for applications requiring enhanced transient protection.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts listed use the DO-214AB (SMC) surface-mount package, ensuring mechanical and footprint compatibility with the original SMCJ150A-13 design.

Q: Which substitute offers the best compliance profile?

A: SMCJ150A-13-F, SMCJ150A-TP, 5.0SMDJ150A, 5.0SMDJ150A-T7, and SMDJ150A all carry ROHS3 compliance certification. The original SMCJ150A-13 is RoHS non-compliant. For applications requiring regulatory compliance, any of these five options are suitable.

Q: Can enhanced performance substitutes (Group 2) be used in place of direct equivalents?

A: Yes. Enhanced performance parts maintain identical voltage specifications and package configuration. The higher current and power ratings represent additional capability and do not create incompatibility. Circuit design validation is not required based on electrical parameter matching alone.

Q: What is the temperature operating range difference between substitutes?

A: Most substitutes operate within -55°C to 150°C, matching the original part. SMCJ150A-TP extends to 175°C, and 5.0SMDJ150A-T7 extends to -65°C on the lower end. These variations provide options for applications with extended thermal requirements.

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