SMA6F13A-M3/6B Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SMA6F13A-M3/6B is an active Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This unidirectional Zener-type TVS diode is designed for general-purpose transient voltage protection in surface-mount applications. The device operates across a wide temperature range (-55°C to 175°C) and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Finding equivalent or substitute parts may be necessary due to inventory constraints, packaging format requirements, or supply chain considerations while maintaining electrical and mechanical compatibility.

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 175	°C
Package / Case	DO-221AC (SlimSMA)	-
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the SMA6F13A-M3/6B are evaluated based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 13V
Voltage - Breakdown (Min): 14.4V
Unidirectional Zener type configuration
Surface-mount technology
General-purpose TVS application classification
ROHS3 compliance and MSL 1 rating

Packaging Consideration: The main part is supplied in Tape & Reel (TR) format. Substitute parts may be available in alternative packaging formats (Cut Tape, Digi-Reel) while maintaining identical electrical specifications.

Performance Variance Allowance: Substitute parts may exhibit different peak pulse current ratings and clamping voltages within the same voltage class. These variations are acceptable when the substitute part meets or exceeds the minimum electrical requirements for the application.

Parameter Comparison

Parameter	SMA6F13A-M3/6B (Main)	SMA6F13A-M3/6A (Direct)	SMAJ13A-TP (MFR Recommended)
Manufacturer	Vishay General Semiconductor	Vishay General Semiconductor	Micro Commercial Co
Voltage - Reverse Standoff (Typ)	13V	13V	13V
Voltage - Breakdown (Min)	14.4V	14.4V	14.4V
Voltage - Clamping (Max) @ Ipp	23.9V	23.9V	21.5V
Current - Peak Pulse (10/1000µs)	147A (8/20µs)	147A (8/20µs)	18.6A
Power - Peak Pulse	4000W	4000W	400W
Package / Case	DO-221AC (SlimSMA)	DO-221AC (SlimSMA)	DO-214AC (SMA)
Operating Temperature Range	-55 to 175°C (TJ)	-55 to 175°C (TJ)	-55 to 175°C (TA)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 1 (Unlimited)

Engineering Selection Recommendations

SMA6F13A-M3/6A (Direct Substitute): This part is electrically and mechanically identical to the main part SMA6F13A-M3/6B. The only difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel). Both parts share the same base product number (SMA6F13), manufacturer, and all electrical specifications. Selection between these two is determined solely by packaging and supply chain requirements. Both maintain ROHS3 compliance and MSL 1 rating.

SMAJ13A-TP (Manufacturer-Recommended Substitute): This part maintains the same reverse standoff voltage (13V) and breakdown voltage (14.4V) as the main part, ensuring voltage-class compatibility. However, it exhibits reduced peak pulse current (18.6A versus 147A) and lower peak pulse power (400W versus 4000W). The package format differs (DO-214AC SMA versus DO-221AC SlimSMA). This substitute is suitable only for applications where the lower current and power ratings are acceptable. Both parts are ROHS3 compliant with MSL 1 rating and identical operating temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can SMA6F13A-M3/6A be used as a direct replacement for SMA6F13A-M3/6B?

A: Yes. Both parts are electrically identical with matching voltage ratings (13V standoff, 14.4V breakdown minimum, 23.9V clamping maximum), peak pulse current (147A), and power dissipation (4000W). The difference is packaging format only. SMA6F13A-M3/6A is available in Cut Tape & Digi-Reel format while SMA6F13A-M3/6B is supplied in Tape & Reel format.

Q: Is SMAJ13A-TP a suitable substitute for high-current transient protection applications?

A: SMAJ13A-TP maintains voltage-class compatibility (13V standoff, 14.4V breakdown) but has significantly lower current handling capability (18.6A versus 147A) and power dissipation (400W versus 4000W). Use this substitute only in applications where peak pulse current requirements do not exceed 18.6A.

Q: What is the difference between DO-221AC (SlimSMA) and DO-214AC (SMA) packages?

A: Both are surface-mount packages for TVS diodes. DO-221AC (SlimSMA) is the package used by the main part and SMA6F13A-M3/6A. DO-214AC (SMA) is used by SMAJ13A-TP. Package selection depends on PCB layout constraints and assembly equipment compatibility. Verify footprint compatibility before substitution.

Q: Are all listed substitutes ROHS3 compliant?

A: Yes. SMA6F13A-M3/6B, SMA6F13A-M3/6A, and SMAJ13A-TP are all ROHS3 compliant with MSL 1 (unlimited moisture sensitivity) rating.

Q: What is the temperature rating difference between TJ and TA specifications?

A: TJ (junction temperature) represents the maximum temperature at the semiconductor junction. TA (ambient temperature) represents the maximum surrounding air temperature. Both the main part and substitutes operate across -55°C to 175°C, with the main part and SMA6F13A-M3/6A specified at TJ and SMAJ13A-TP specified at TA. Both specifications cover the same functional temperature range.

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