SMAJ6.0A-TP Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SMAJ6.0A-TP is a unidirectional Zener-type transient voltage suppressor manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 6V reverse standoff voltage with a 10.3V maximum clamping voltage and 38.8A peak pulse current capability in a DO-214AC (SMA) package. The part is RoHS3 compliant, MSL Level 1, and maintains active product status. Equivalent and substitute parts are identified based on matching electrical performance parameters and package compatibility to support procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	6	V
Voltage - Breakdown (Min)	6.67	V
Voltage - Clamping (Max) @ Ipp	10.3	V
Current - Peak Pulse (10/1000µs)	38.8	A
Power - Peak Pulse	400	W
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-55 to 175	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SMAJ6.0A-TP are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes maintain identical electrical specifications across all critical parameters: 6V reverse standoff voltage, 6.67V minimum breakdown voltage, 10.3V maximum clamping voltage, and 38.8A peak pulse current. These parts are functionally interchangeable in the same circuit application and use the same DO-214AC (SMA) package footprint. Packaging format (Tape & Reel, Cut Tape, or bulk) may differ, but electrical performance and physical dimensions remain equivalent.

Similar Substitutes share the same 6V reverse standoff voltage and DO-214AC (SMA) package but differ in clamping voltage (13.7V maximum) and peak pulse current specifications (170A to 290A depending on pulse waveform). These parts provide higher energy absorption capability and are suitable for applications requiring enhanced transient protection, though circuit design verification is necessary to confirm compatibility with the higher clamping voltage.

Key parameters determining substitution eligibility:

Voltage - Reverse Standoff (Typ): 6V
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
Unidirectional Channels: 1
Type: Zener

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Operating Temperature	RoHS Status	Inventory Status
SMAJ6.0A-TP	Micro Commercial Co	6V	10.3V	38.8A	400W	DO-214AC, SMA	-55 to 175°C	ROHS3 Compliant	5400 Pcs
SMAJ6.0A	MDD	6V	10.3V	38.8A	400W	DO-214AC, SMA	-50 to 150°C	ROHS3 Compliant	20400 Pcs
SMAJ6.0A-13-F	Diodes Incorporated	6V	10.3V	38.8A	400W	DO-214AC, SMA	-55 to 150°C	ROHS3 Compliant	7689 Pcs
SMAJ6.0A-E3/5A	Vishay General Semiconductor - Diodes Division	6V	10.3V	38.8A	400W	DO-214AC, SMA	-55 to 150°C	ROHS3 Compliant	20400 Pcs
SMAJ6.0A-E3/61	Vishay General Semiconductor - Diodes Division	6V	10.3V	38.8A	400W	DO-214AC, SMA	-55 to 150°C	ROHS3 Compliant	32400 Pcs
SMA6F6.0A-M3/6A	Vishay General Semiconductor - Diodes Division	6V	13.7V	290A (8/20µs)	4000W	DO-221AC, SMA Flat Leads	-55 to 175°C	ROHS3 Compliant	10200 Pcs
SMA6J6.0A-TR	STMicroelectronics	6V	13.7V	290A (8/20µs)	600W	DO-214AC, SMA	-55 to 175°C	ROHS3 Compliant	1907 Pcs
SMAJ6.0A-TR	STMicroelectronics	6V	13.7V	170A (8/20µs)	400W	DO-214AC, SMA	-55 to 150°C	ROHS3 Compliant	10400 Pcs

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, meeting regulatory requirements equivalent to the SMAJ6.0A-TP. Moisture sensitivity level remains constant at MSL 1 (Unlimited) across all alternatives, eliminating moisture-related handling constraints.

For direct electrical substitution with identical performance characteristics, select from SMAJ6.0A (MDD), SMAJ6.0A-13-F (Diodes Incorporated), SMAJ6.0A-E3/5A, or SMAJ6.0A-E3/61 (Vishay). These parts deliver 10.3V clamping voltage and 38.8A peak pulse current. The MDD variant offers the highest inventory availability at 20400 pieces. Vishay parts provide extended temperature range options (-55 to 175°C for SMAJ6.0A-E3/61) matching the original specification.

For applications requiring enhanced transient suppression capability, similar substitutes SMA6F6.0A-M3/6A and SMAJ6.0A-TR (STMicroelectronics) provide higher clamping voltages (13.7V) and increased peak pulse current handling. The SMA6F6.0A-M3/6A variant uses a DO-221AC (SlimSMA) package with flat leads and delivers 4000W peak pulse power. The STMicroelectronics SMAJ6.0A-TR maintains the standard DO-214AC (SMA) package with 170A peak pulse current at 8/20µs waveform.

Selection should prioritize inventory availability, packaging format compatibility with existing assembly processes, and temperature range requirements for the target application environment.

Frequently Asked Questions (FAQ)

Q: Can SMAJ6.0A (MDD) directly replace SMAJ6.0A-TP in production?

A: Yes. Both parts share identical electrical specifications: 6V reverse standoff voltage, 10.3V maximum clamping voltage, and 38.8A peak pulse current. The DO-214AC (SMA) package footprint is identical. Packaging format differences (Tape & Reel versus other formats) do not affect electrical performance or PCB assembly compatibility.

Q: What is the difference between direct substitutes and similar substitutes?

A: Direct substitutes (SMAJ6.0A, SMAJ6.0A-13-F, SMAJ6.0A-E3/5A, SMAJ6.0A-E3/61) maintain all electrical parameters identical to SMAJ6.0A-TP. Similar substitutes (SMA6F6.0A-M3/6A, SMA6J6.0A-TR, SMAJ6.0A-TR) share the 6V reverse standoff voltage and SMA package but feature higher clamping voltages (13.7V) and increased peak pulse current ratings. Similar substitutes provide enhanced protection but require circuit design verification to confirm compatibility with the higher clamping voltage.

Q: Does the operating temperature range affect substitution eligibility?

A: Operating temperature range is application-dependent. SMAJ6.0A-TP specifies -55 to 175°C. MDD variant operates -50 to 150°C, which is narrower. Diodes Incorporated and STMicroelectronics variants operate -55 to 150°C. Vishay SMAJ6.0A-E3/61 matches the full -55 to 175°C range. Select based on your circuit's thermal environment requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 Compliant status, matching the original SMAJ6.0A-TP specification. Moisture sensitivity level remains MSL 1 (Unlimited) across all alternatives.

Q: What package differences exist among substitute parts?

A: Most substitutes use DO-214AC (SMA) package, identical to SMAJ6.0A-TP. Exception: SMA6F6.0A-M3/6A uses DO-221AC (SlimSMA) with flat leads, which has different physical dimensions. Verify PCB footprint compatibility before selecting this variant.

Q: Which substitute offers the highest inventory availability?

A: SMAJ6.0A-E3/61 (Vishay) provides 32400 pieces in stock, followed by SMAJ6.0A (MDD) at 20400 pieces. Both are direct electrical substitutes with identical performance to SMAJ6.0A-TP.

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