1SMC10AT3 Equivalent & Substitute Parts

Part Overview

The 1SMC10AT3 is a transient voltage suppressor (TVS) diode manufactured by onsemi in the DO-214AB (SMC) surface mount package. This unidirectional Zener-type TVS diode is designed for general-purpose overvoltage protection applications with a 10V reverse standoff voltage and 17V maximum clamping voltage. The part is currently obsolete, making equivalent substitute parts necessary for ongoing design support and production requirements. Active alternatives from multiple manufacturers provide identical electrical performance within the same package footprint.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	10V
Voltage - Breakdown (Min)	11.1V
Voltage - Clamping (Max) @ Ipp	17V
Current - Peak Pulse (10/1000µs)	88.2A
Power - Peak Pulse	1500W
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Type	Zener
Unidirectional Channels	1
Operating Temperature	-65°C ~ 150°C

Substitute Part Grouping Explanation

Substitution eligibility for the 1SMC10AT3 is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage - Reverse Standoff: 10V (nominal)
Voltage - Breakdown (Min): 11.1V
Voltage - Clamping (Max) @ Ipp: 17V
Current - Peak Pulse (10/1000µs): 88.2A ± 0.3A tolerance
Power - Peak Pulse: 1500W
Package / Case: DO-214AB (SMC)
Mounting Type: Surface Mount
Type: Zener, Unidirectional

All substitute parts listed maintain these core electrical specifications within acceptable manufacturing tolerances. Package compatibility ensures direct PCB footprint replacement without layout modification. Operating temperature ranges may vary between manufacturers but all listed substitutes support the minimum required range for general-purpose applications.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse	Power - Peak Pulse	Package	Product Status	RoHS Status
1SMC10AT3	onsemi	10V	17V	88.2A	1500W	DO-214AB, SMC	Obsolete	RoHS non-compliant
SMCJ10A	Meritek	10V	17V	88.24A	1500W	DO-214AB (SMC)	Active	ROHS3 Compliant
SMCJ10AE3/TR13	Microchip Technology	10V	17V	88.2A	1500W	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ10A-13-F	Diodes Incorporated	10V	17V	88.2A	1500W	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ10A-HRA	Littelfuse Inc.	10V	17V	88.3A	1500W	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ10A-HRAT7	Littelfuse Inc.	10V	17V	88.3A	1500W	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ10A-M3/57T	Vishay General Semiconductor - Diodes Division	10V	17V	88.2A	1500W	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ10A-M3/9AT	Vishay General Semiconductor - Diodes Division	10V	17V	88.2A	1500W	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ10A-TP	Micro Commercial Co	10V	17V	88.3A	1500W	DO-214AB, SMC	Active	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are electrically and mechanically equivalent to the 1SMC10AT3 and support direct replacement in existing designs. Selection among active alternatives should prioritize:

Product Status: All substitute parts maintain active production status, ensuring long-term availability and supply chain stability compared to the obsolete 1SMC10AT3.

RoHS Compliance: All substitute parts are ROHS3 compliant, meeting current environmental and regulatory requirements. The original 1SMC10AT3 is RoHS non-compliant and should be replaced in new designs subject to RoHS regulations.

Certifications: All substitute parts carry identical REACH Unaffected and EAR99 ECCN classifications, maintaining regulatory equivalence.

Inventory Availability: Multiple manufacturers provide active stock, with SMCJ10A-TP offering the highest current inventory (3781 pcs), followed by SMCJ10A variants from Meritek (6350 pcs). Selection may be based on supply chain preferences and lead time requirements.

Operating Temperature Range: SMCJ10A-TP supports the extended upper temperature limit of -55°C ~ 175°C, providing additional thermal margin for high-temperature applications compared to alternatives rated to 150°C.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for 1SMC10AT3?

A: Yes. All listed substitute parts maintain identical voltage ratings (10V standoff, 17V clamping), current handling (88.2A ± 0.3A), power dissipation (1500W), and DO-214AB (SMC) package specifications. Direct PCB footprint replacement is supported without design modification.

Q: What is the difference between SMCJ10A variants from different manufacturers?

A: All SMCJ10A variants meet the same electrical specifications. Differences exist only in manufacturer-specific part number suffixes (e.g., -13-F, -HRA, -M3/57T, -TP) which denote packaging options, tape reel configurations, or internal manufacturing codes. Electrical performance is equivalent across all variants.

Q: Why should I replace the obsolete 1SMC10AT3?

A: The 1SMC10AT3 is obsolete and no longer manufactured by onsemi. Active substitute parts from Microchip Technology, Diodes Incorporated, Littelfuse, Vishay, and Meritek provide identical functionality with current production support, RoHS3 compliance, and guaranteed long-term availability.

Q: Are there any temperature rating differences I should consider?

A: Most substitute parts are rated -55°C ~ 150°C. The SMCJ10A-TP variant extends to -55°C ~ 175°C, providing additional thermal headroom. The original 1SMC10AT3 was rated -65°C ~ 150°C. For applications requiring the lower -65°C minimum, verify specific substitute part datasheets or consider SMCJ10A-M3/57T and SMCJ10A-M3/9AT which support -55°C minimum.

Q: Do all substitute parts use the same tape and reel packaging?

A: All substitute parts are available in Tape & Reel (TR) packaging suitable for automated assembly. Specific reel configurations may vary by manufacturer suffix codes, but all are compatible with standard SMD pick-and-place equipment.

Q: What is the peak pulse current tolerance across these parts?

A: Peak pulse current specifications range from 88.2A to 88.3A across all substitutes, representing less than 0.2% variation. This tolerance is within normal manufacturing specifications for TVS diodes and does not affect circuit protection performance.

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