SMA6J13A-E3/5A Equivalent & Substitute Parts

Part Overview

The SMA6J13A-E3/5A is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AC (SMA) package and provides transient overvoltage protection for general-purpose applications. The part is active in production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are necessary when the original manufacturer part is unavailable, when alternative sourcing improves supply chain resilience, or when design requirements permit operation within the specified electrical parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	13	V
Voltage - Breakdown (Min)	14.4	V
Voltage - Clamping (Max) @ Ipp	23.9	V
Current - Peak Pulse (10/1000µs)	147	A (8/20µs)
Power - Peak Pulse	4000	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AC, SMA	-
Mounting Type	Surface Mount	-
Type	Zener	-
Unidirectional Channels	1	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility for the SMA6J13A-E3/5A is determined by the following critical parameters:

Primary Matching Criteria:

Voltage - Reverse Standoff (Typ): 13V
Voltage - Breakdown (Min): 14.4V
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
Type: Zener, Unidirectional (1 channel)
RoHS Status: ROHS3 Compliant

Secondary Compatibility Parameters:

Voltage - Clamping (Max) @ Ipp: 23.9V (reference value; substitutes may vary within acceptable design margins)
Current - Peak Pulse (10/1000µs): 147A (reference value; substitutes may vary)
Power - Peak Pulse: 4000W (reference value; substitutes may vary)
Operating Temperature Range: -55°C to 150°C minimum

Substitute parts must maintain identical reverse standoff voltage, breakdown voltage, and package specifications. Variations in clamping voltage, peak pulse current, and power dissipation are acceptable when the substitute part remains within the same voltage class and meets the application's transient protection requirements.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature (TJ)	Package	RoHS Status
SMA6J13A-E3/5A	Vishay General Semiconductor	13V	14.4V	23.9V	147A (8/20µs)	4000W	-55 to 150°C	DO-214AC, SMA	ROHS3 Compliant
SMA6J13A-TR	STMicroelectronics	13V	14.4V	23.9V	147A (8/20µs)	600W	-55 to 175°C	DO-214AC, SMA	ROHS3 Compliant
SM4T15AY	STMicroelectronics	13V	14.4V	27.2V	85A (8/20µs)	400W	-55 to 150°C	DO-214AC, SMA	ROHS3 Compliant
SMAJ13A	MDD	13V	14.4V	21.5V	18.6A	400W	-50 to 150°C	DO-214AC, SMA	ROHS3 Compliant
SMAJ13A-13-F	Diodes Incorporated	13V	14.4V	21.5V	18.6A	400W	-55 to 150°C	DO-214AC, SMA	ROHS3 Compliant
SMAJ13A-TP	Micro Commercial Co	13V	14.4V	21.5V	18.6A	400W	-55 to 175°C	DO-214AC, SMA	ROHS3 Compliant
SMAJ13A-TR	STMicroelectronics	13V	14.4V	27.2V	85A (8/20µs)	400W	-55 to 150°C	DO-214AC, SMA	ROHS3 Compliant
SZ1SMA13AT3G	Littelfuse Inc.	13V	14.4V	21.5V	18.6A	400W	-65 to 150°C	DO-214AC, SMA	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain the critical voltage specifications (13V reverse standoff, 14.4V minimum breakdown) and package compatibility (DO-214AC, SMA surface mount) required for direct substitution with the SMA6J13A-E3/5A.

SMA6J13A-TR (STMicroelectronics): Direct electrical equivalent with identical clamping voltage (23.9V) and peak pulse current (147A). Extended operating temperature range to 175°C. Suitable for applications requiring maximum thermal margin.

SM4T15AY (STMicroelectronics): Maintains voltage specifications with higher clamping voltage (27.2V) and reduced peak pulse current (85A). Automotive-grade component with AEC-Q101 qualification. Appropriate for automotive and harsh-environment applications where additional voltage margin is acceptable.

SMAJ13A (MDD): Lower peak pulse current (18.6A) and clamping voltage (21.5V). Suitable for applications with reduced transient energy requirements. Minimum operating temperature -50°C.

SMAJ13A-13-F (Diodes Incorporated): Equivalent to SMAJ13A specifications with extended operating temperature range (-55°C to 150°C). Available in Cut Tape and Digi-Reel packaging.

SMAJ13A-TP (Micro Commercial Co): Equivalent to SMAJ13A specifications with extended upper operating temperature to 175°C. Tape & Reel packaging.

SMAJ13A-TR (STMicroelectronics): Higher clamping voltage (27.2V) and reduced peak pulse current (85A) compared to the original part. Suitable when additional voltage margin is required.

SZ1SMA13AT3G (Littelfuse Inc.): Automotive-grade component with AEC-Q101 qualification. Extended lower operating temperature range (-65°C to 150°C). Specified capacitance (860pF @ 1MHz). Appropriate for automotive and temperature-critical applications.

All substitute parts carry ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating, matching the original part's environmental specifications.

Frequently Asked Questions (FAQ)

Q: Can I use SMAJ13A parts as direct replacements for SMA6J13A-E3/5A?

A: SMAJ13A variants maintain the critical voltage specifications (13V reverse standoff, 14.4V breakdown) and DO-214AC package compatibility. However, they feature reduced peak pulse current (18.6A versus 147A) and lower clamping voltage (21.5V versus 23.9V). Substitution is valid only when the application's transient energy requirements are compatible with the lower current and power ratings.

Q: What is the difference between the SMA6J13A-TR and SMAJ13A-TR part numbers?

A: Both are STMicroelectronics products in DO-214AC packages with 13V reverse standoff voltage. SMA6J13A-TR provides 147A peak pulse current and 23.9V clamping voltage. SMAJ13A-TR provides 85A peak pulse current and 27.2V clamping voltage. Selection depends on whether the application requires higher current handling or higher voltage clamping margin.

Q: Are automotive-grade substitutes (SM4T15AY, SZ1SMA13AT3G) compatible with non-automotive applications?

A: Yes. Automotive-grade components with AEC-Q101 qualification meet or exceed the electrical and reliability specifications required for general-purpose applications. These parts are suitable for any application requiring the specified voltage protection characteristics.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in Tape & Reel (TR), Cut Tape (CT) with Digi-Reel, and unspecified packaging configurations. All maintain the DO-214AC (SMA) surface mount package for PCB assembly compatibility.

Q: Can I substitute parts with different clamping voltages (21.5V, 23.9V, 27.2V)?

A: Clamping voltage variation is acceptable when the application design permits operation within the specified range. The 13V reverse standoff and 14.4V breakdown voltage remain constant across all substitutes. Higher clamping voltages (27.2V) provide additional margin but may affect circuit performance if the design is optimized for lower clamping values. Lower clamping voltages (21.5V) reduce margin but remain within the same voltage protection class.

Q: What is the significance of the operating temperature range differences?

A: The original SMA6J13A-E3/5A operates from -55°C to 150°C. Substitutes with extended ranges (-55°C to 175°C or -65°C to 150°C) provide additional thermal margin. Selection depends on the application's thermal environment. Parts with minimum operating temperature of -50°C (SMAJ13A by MDD) are suitable only for applications not requiring operation below -50°C.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating, matching the environmental specifications of the original SMA6J13A-E3/5A.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message