SMCJ15A-13 Transient Voltage Suppressor Diode Equivalent & Substitute Parts

Part Overview

The SMCJ15A-13 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated in the DO-214AB (SMC) surface mount package. This component is designed for general-purpose transient voltage suppression applications with a 15V reverse standoff voltage and 24.4V maximum clamping voltage at peak pulse current. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines that maintain electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	15V
Voltage - Breakdown (Min)	16.7V
Voltage - Clamping (Max) @ Ipp	24.4V
Current - Peak Pulse (10/1000µs)	61.5A
Power - Peak Pulse	1500W (1.5kW)
Type	Zener
Unidirectional Channels	1
Mounting Type	Surface Mount
Package / Case	DO-214AB, SMC
Operating Temperature	-55°C ~ 150°C (TJ)

Substitute Part Grouping Explanation

Substitution eligibility for the SMCJ15A-13 is determined by strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

Voltage - Reverse Standoff: 15V (exact match required)
Voltage - Breakdown (Min): 16.7V (exact match required)
Voltage - Clamping (Max) @ Ipp: 24.4V (exact match required)
Type: Zener, unidirectional (1 channel)
Package / Case: DO-214AB, SMC (mechanical compatibility)
Mounting Type: Surface Mount

Substitute Categories:

Category A - Direct Electrical & Package Equivalents (SMC/DO-214AB): Parts maintaining identical electrical specifications and SMC package format. These are pin-for-pin compatible replacements suitable for direct PCB substitution.

Category B - Electrical Equivalents with Enhanced Specifications (DO-214AB variants): Parts matching core voltage parameters but with different peak pulse current ratings or power dissipation capabilities. These maintain electrical compatibility but offer different transient handling capacity.

Category C - Related Voltage Series (Alternative Standoff Voltages): Parts from the same TVS diode family with different reverse standoff voltages. These are not direct substitutes but represent alternative protection levels for circuit redesign scenarios.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Product Status	RoHS Status
SMCJ15A-13	Diodes Incorporated	15V	16.7V	24.4V	61.5A	1500W	DO-214AB, SMC	Discontinued	RoHS non-compliant
SMCJ15A-13-F	Diodes Incorporated	15V	16.7V	24.4V	61.5A	1500W	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ15A-TP	Micro Commercial Co	15V	16.7V	24.4V	61.5A	1500W	DO-214AB, SMC	Active	ROHS3 Compliant
5.0SMDJ15A	MDE Semiconductor Inc	15V	16.7V	24.4V	205A	5000W	DO-214AB, SMC	Active	ROHS3 Compliant
5.0SMDJ15A-T7	Littelfuse Inc.	15V	16.7V	24.4V	205A	5000W	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ11A	Fairchild Semiconductor	11V	12.2V	18.2V	82.5A	1500W	DO-214AB, SMC	Active	Not specified
SMCJ12A	MDD	12V	13.3V	19.9V	75.4A	1500W	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ15A	EVVO Semi	15V	16.7V	24.4V	61.5A	600W	DO-214AC, SMA	Active	ROHS3 Compliant
SMCJ15A-TR	STMicroelectronics	15V	16.7V	32.5V	308A (8/20µs)	1500W	DO-214AB, SMC	Active	ROHS3 Compliant

Engineering Selection Recommendations

Recommended Direct Substitutes (Identical Electrical & Package Specifications):

SMCJ15A-13-F (Diodes Incorporated) and SMCJ15A-TP (Micro Commercial Co) are the primary recommended substitutes. Both maintain exact electrical parameter matching with the original SMCJ15A-13 and are available in active product status. SMCJ15A-13-F offers ROHS3 compliance in Cut Tape and Digi-Reel packaging. SMCJ15A-TP provides ROHS3 compliance in Tape & Reel format with extended operating temperature range to 175°C.

Enhanced Specification Alternatives (Electrical Equivalents with Higher Current Ratings):

5.0SMDJ15A (MDE Semiconductor Inc) and 5.0SMDJ15A-T7 (Littelfuse Inc.) maintain identical voltage specifications but provide significantly higher peak pulse current (205A vs. 61.5A) and power dissipation (5000W vs. 1500W). These are suitable for applications requiring greater transient energy absorption while maintaining the same voltage protection threshold. Both are ROHS3 compliant and in active production.

Package Variant Consideration:

SMCJ15A from EVVO Semi matches electrical specifications but uses DO-214AC (SMA) package instead of DO-214AB (SMC). This represents a different physical footprint and is not a direct PCB replacement without layout modification. Power dissipation is reduced to 600W.

Non-Recommended Alternatives:

SMCJ11A and SMCJ12A represent different voltage protection levels (11V and 12V standoff respectively) and do not meet the electrical parameter requirements for direct substitution. SMCJ15A-TR from STMicroelectronics has different clamping voltage (32.5V vs. 24.4V) and current specifications, making it unsuitable for applications requiring the original 24.4V protection threshold.

Frequently Asked Questions (FAQ)

Q: Can SMCJ15A-13-F be used as a direct replacement for SMCJ15A-13?

A: Yes. SMCJ15A-13-F maintains identical electrical specifications (15V standoff, 16.7V breakdown, 24.4V clamping, 61.5A peak pulse current) and the same DO-214AB SMC package. The primary difference is product status (active vs. discontinued) and RoHS compliance (ROHS3 vs. non-compliant). It is a pin-for-pin compatible substitute.

Q: What is the difference between SMCJ15A-13-F and SMCJ15A-TP?

A: Both are electrically identical with 15V standoff and 24.4V clamping specifications. SMCJ15A-13-F is manufactured by Diodes Incorporated in Cut Tape and Digi-Reel packaging. SMCJ15A-TP is manufactured by Micro Commercial Co in Tape & Reel format and supports extended operating temperature to 175°C (vs. 150°C for SMCJ15A-13-F). Selection depends on packaging requirements and temperature operating range.

Q: Can 5.0SMDJ15A be used instead of SMCJ15A-13?

A: Yes, for voltage protection compatibility. Both maintain 15V standoff and 24.4V clamping specifications. However, 5.0SMDJ15A has significantly higher peak pulse current (205A vs. 61.5A) and power dissipation (5000W vs. 1500W). This makes it suitable for applications requiring greater transient energy absorption. The higher ratings do not create incompatibility; they represent enhanced capability.

Q: Why is SMCJ15A from EVVO Semi not recommended as a direct substitute?

A: While SMCJ15A from EVVO Semi matches the voltage specifications (15V standoff, 24.4V clamping), it uses DO-214AC (SMA) package instead of DO-214AB (SMC). This represents a different physical footprint and pin configuration, requiring PCB layout modification. Additionally, power dissipation is reduced to 600W. It is not a pin-for-pin compatible replacement.

Q: Are SMCJ11A and SMCJ12A suitable alternatives?

A: No. SMCJ11A has 11V standoff voltage and 18.2V clamping voltage. SMCJ12A has 12V standoff voltage and 19.9V clamping voltage. These do not meet the 15V standoff and 24.4V clamping requirements of the original SMCJ15A-13. They represent different voltage protection levels and are not electrically compatible substitutes.

Q: What does RoHS compliance mean for this component?

A: RoHS (Restriction of Hazardous Substances) compliance indicates the component meets environmental standards restricting lead and other hazardous materials. SMCJ15A-13 is RoHS non-compliant, while SMCJ15A-13-F and SMCJ15A-TP are ROHS3 compliant. For applications subject to RoHS requirements, ROHS3 compliant alternatives are necessary.

Q: Can SMCJ15A-TR from STMicroelectronics be used?

A: No. Although SMCJ15A-TR maintains the 15V standoff voltage, it has different clamping voltage (32.5V vs. 24.4V) and significantly higher peak pulse current (308A vs. 61.5A). These electrical differences make it unsuitable for circuits designed for 24.4V clamping protection. It represents a different protection specification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message