1SMC58AT3 Transient Voltage Suppressor (TVS) Diode – Equivalent & Substitute Parts

Part Overview

The 1SMC58AT3 is a unidirectional transient voltage suppressor diode manufactured by onsemi, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 58V reverse standoff voltage with a 93.6V maximum clamping voltage and 16A peak pulse current capability in a DO-214AB (SMC) package. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Active alternatives with identical or enhanced electrical characteristics are available from multiple manufacturers.

Key Parameters

Parameter	Value	Unit
Voltage – Reverse Standoff (Typ)	58	V
Voltage – Breakdown (Min)	64.4	V
Voltage – Clamping (Max) @ Ipp	93.6	V
Current – Peak Pulse (10/1000µs)	16	A
Power – Peak Pulse	1500	W
Operating Temperature Range	-65 to 150	°C (TJ)
Package / Case	DO-214AB, SMC	—
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitution of the 1SMC58AT3 is determined by strict equivalence in the following electrical and mechanical parameters:

Voltage – Reverse Standoff: 58V (±tolerance)
Voltage – Breakdown (Min): 64.4V
Voltage – Clamping (Max) @ Ipp: 93.6V
Package / Case: DO-214AB (SMC)
Unidirectional configuration (single channel)
Zener diode type

Substitute parts are grouped into two categories:

Direct Equivalents (1500W class): Parts with identical peak pulse current (16A) and power dissipation (1500W). These provide one-to-one replacement capability.

Enhanced Substitutes (3000W and 5000W classes): Parts with higher peak pulse current ratings (32.1A and 54.6A respectively) and proportionally increased power dissipation. These maintain all critical voltage parameters while offering superior transient handling capability. Enhanced substitutes are suitable for applications requiring additional margin or higher surge immunity.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage – Reverse Standoff (V)	Voltage – Breakdown Min (V)	Voltage – Clamping Max @ Ipp (V)	Current – Peak Pulse (A)	Power – Peak Pulse (W)	Operating Temp (°C)	Package	Product Status	RoHS Status
1SMC58AT3	onsemi	58	64.4	93.6	16	1500	-65 to 150	DO-214AB, SMC	Obsolete	RoHS non-compliant
1SMC58A TR13 PBFREE	Central Semiconductor Corp	58	64.4	93.6	16	1500	-65 to 150	DO-214AB, SMC	Active	ROHS3 Compliant
3.0SMCJ58A-13	Diodes Incorporated	58	64.4	93.6	32.1	3000	-55 to 175	DO-214AB, SMC	Active	ROHS3 Compliant
5.0SMDJ58A	Taiwan Semiconductor Corporation	58	64.4	93.6	54.6	5000	-55 to 175	DO-214AB, SMC	Active	ROHS3 Compliant
5.0SMDJ58A-T7	Littelfuse Inc.	58	64.4	93.6	54.6	5000	-65 to 150	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ58A	MDD	58	64.4	93.6	16.1	1500	-50 to 150	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ58A-13-F	Diodes Incorporated	58	64.4	93.6	16	1500	-55 to 150	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ58A-HR	Littelfuse Inc.	58	64.4	93.6	16.1	1500	-65 to 150	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ58A-HRA	Littelfuse Inc.	58	64.4	93.6	16.1	1500	-65 to 150	DO-214AB, SMC	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (1500W Class):

1SMC58A TR13 PBFREE (Central Semiconductor Corp) provides the closest functional equivalent with identical electrical specifications and active product status. This part is ROHS3 compliant and available in tape & reel packaging, addressing the RoHS non-compliance of the obsolete 1SMC58AT3.

SMCJ58A-13-F (Diodes Incorporated) and SMCJ58A-HR (Littelfuse Inc.) are alternative direct equivalents with active status and full RoHS3 compliance. Both maintain the original operating temperature range and electrical performance.

For Enhanced Protection (3000W and 5000W Classes):

3.0SMCJ58A-13 (Diodes Incorporated) doubles the peak pulse current to 32.1A while maintaining all voltage parameters. This part extends the operating temperature range to -55°C to 175°C and is suitable for applications requiring additional transient margin.

5.0SMDJ58A (Taiwan Semiconductor Corporation) and 5.0SMDJ58A-T7 (Littelfuse Inc.) provide the highest protection level with 54.6A peak pulse current and 5000W power dissipation. Both are ROHS3 compliant and active. The Littelfuse variant maintains the original -65°C to 150°C temperature range.

All substitute parts are available in DO-214AB (SMC) surface-mount packaging and maintain unidirectional Zener diode configuration. Selection should be based on application surge requirements, thermal design constraints, and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can I use a higher power-rated TVS diode (3000W or 5000W) as a direct replacement for the 1500W 1SMC58AT3?

A: Yes. Enhanced substitutes with higher peak pulse current ratings maintain all critical voltage parameters (58V standoff, 93.6V clamping) and are electrically compatible. Higher power ratings provide additional transient handling capability without affecting circuit operation. Verify PCB thermal design accommodates the substitute part's power dissipation if operating near maximum ratings.

Q: What is the difference between 1SMC58A TR13 PBFREE and SMCJ58A-13-F?

A: Both are direct electrical equivalents with 16A peak pulse current and 1500W power dissipation. 1SMC58A TR13 PBFREE is manufactured by Central Semiconductor Corp and supplied in tape & reel packaging. SMCJ58A-13-F is manufactured by Diodes Incorporated. Selection depends on supply availability and preferred manufacturer qualification.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts are ROHS3 compliant. The original 1SMC58AT3 is RoHS non-compliant, making compliant substitutes necessary for new designs and applications subject to RoHS regulations.

Q: Does the operating temperature range affect substitution suitability?

A: Operating temperature range is a design consideration but not a substitution barrier. The original part operates -65°C to 150°C. Most substitutes maintain this range or extend it to -55°C to 175°C. Verify the substitute's temperature range meets application requirements. Parts with extended ranges (-55°C to 175°C) provide additional margin in extreme environments.

Q: Can I substitute SMCJ58A (MDD) for the 1SMC58AT3?

A: SMCJ58A is electrically equivalent with 16.1A peak pulse current and 1500W power dissipation. The operating temperature range is -50°C to 150°C, which is narrower than the original -65°C to 150°C. Use this substitute only if the application does not require operation below -50°C.

Q: What packaging options are available for substitute parts?

A: All substitute parts use DO-214AB (SMC) surface-mount packaging, identical to the original 1SMC58AT3. Most are available in tape & reel (TR) format for automated assembly. Verify packaging format with your supplier to ensure compatibility with production equipment.

Q: How do I determine which substitute is best for my application?

A: Identify your application's peak transient current requirement. For standard protection (≤16A), use 1500W-class substitutes. For higher surge immunity (16–32A), use the 3000W class. For maximum protection (>32A), use 5000W-class parts. All maintain the 58V/93.6V voltage specification. Confirm RoHS compliance and temperature range requirements with your design specifications.

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