SMCJ10C Transient Voltage Suppressor Diode - Equivalent & Substitute Parts

Part Overview

The SMCJ10C is a bidirectional Zener transient voltage suppressor diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. Housed in a DO-214AB (SMC) surface mount package, this component provides 10V reverse standoff voltage with 17.85V maximum clamping voltage and 88.3A peak pulse current capability. The SMCJ10C is classified as obsolete, necessitating identification of active equivalent and substitute parts that maintain electrical and mechanical compatibility for new designs and production continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	10	V
Voltage - Breakdown (Min)	10.53	V
Voltage - Clamping (Max) @ Ipp	17.85	V
Current - Peak Pulse (10/1000µs)	88.3	A
Power - Peak Pulse	1500	W
Operating Temperature Range	-55 to 150	°C
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Bidirectional Channels	1	—
Type	Zener	—

Substitute Part Grouping Explanation

Substitution of the SMCJ10C is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 10V
Voltage - Clamping (Max) @ Ipp: 17V to 17.85V range
Current - Peak Pulse (10/1000µs): 88.2A to 88.3A
Power - Peak Pulse: 1500W
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Bidirectional Channels: 1
Type: Zener

Secondary Consideration:

Operating Temperature Range: Minimum -55°C, maximum 150°C or higher

Parts meeting these criteria are classified as direct electrical and mechanical equivalents. Parts with identical standoff voltage but different clamping voltage or peak pulse current are listed as related alternatives within the same voltage class but require application-level verification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Product Status	Operating Temperature
SMCJ10C	Littelfuse Inc.	10V	17.85V	88.3A	1500W	DO-214AB, SMC	Obsolete	-55 to 150°C
SMCJ10CA	Fairchild Semiconductor	10V	17V	88.3A	1500W	DO-214AB, SMC	Active	-55 to 150°C
SMCJ10CA-13-F	Diodes Incorporated	10V	17V	88.2A	1500W	DO-214AB, SMC	Active	-55 to 150°C
SMCJ10CA-TP	Micro Commercial Co	10V	17V	88.3A	1500W	DO-214AB, SMC	Active	-55 to 175°C
SMCJ10CAE3/TR13	Microchip Technology	10V	17V	88.2A	1500W	DO-214AB, SMC	Active	-65 to 150°C
SMCJ10CE3/TR13	Microchip Technology	10V	18.8V	79.8A	1500W	DO-214AB, SMC	Active	-65 to 150°C
SMCJ11CA-13-F	Diodes Incorporated	11V	18.2V	82.4A	1500W	DO-214AB, SMC	Active	-55 to 150°C
SMLJ10CA	Bourns Inc.	10V	17V	176.4A	3000W	DO-214AB, SMC	Active	-55 to 150°C
SMLJ10CA-TP	Micro Commercial Co	10V	17V	176.4A	3000W	DO-214AB, SMC	Active	-55 to 175°C

Engineering Selection Recommendations

Direct Equivalents (Recommended Primary Substitutes):

SMCJ10CA (Fairchild Semiconductor), SMCJ10CA-13-F (Diodes Incorporated), SMCJ10CA-TP (Micro Commercial Co), SMCJ10CAE3/TR13 (Microchip Technology), and SMCJ10CE3/TR13 (Microchip Technology) are active products with identical or near-identical electrical specifications to the obsolete SMCJ10C. All maintain 10V reverse standoff voltage, 1500W peak pulse power, and DO-214AB SMC package compatibility. These parts are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1), meeting modern manufacturing and environmental standards.

Higher Current Capability Alternatives:

SMLJ10CA (Bourns Inc.) and SMLJ10CA-TP (Micro Commercial Co) provide doubled peak pulse current (176.4A) and doubled power dissipation (3000W) while maintaining identical 10V standoff voltage and 17V clamping voltage. These parts are suitable for applications requiring enhanced transient energy absorption within the same voltage class.

Voltage Class Variant:

SMCJ11CA-13-F (Diodes Incorporated) operates at 11V reverse standoff with 18.2V clamping voltage, representing a higher voltage class. This part is applicable only when circuit protection requirements permit the elevated voltage threshold.

All recommended substitutes are active products with established supply chains and full RoHS3 compliance certification.

Frequently Asked Questions (FAQ)

Q: Can SMCJ10CA directly replace SMCJ10C in existing designs?

A: Yes. SMCJ10CA maintains identical reverse standoff voltage (10V), equivalent clamping voltage (17V vs. 17.85V), matching peak pulse current (88.3A), and identical package (DO-214AB SMC). The 0.85V clamping voltage difference falls within normal manufacturing tolerance ranges for this component class.

Q: What is the difference between SMCJ10CA and SMLJ10CA?

A: Both maintain 10V standoff and 17V clamping voltage. SMLJ10CA provides doubled peak pulse current (176.4A vs. 88.3A) and doubled power dissipation (3000W vs. 1500W). Selection depends on transient energy requirements of the protected circuit. SMLJ10CA is suitable for higher-energy transient environments.

Q: Are SMCJ10CA-TP and SMCJ10CA electrically identical?

A: Yes, electrically identical. SMCJ10CA-TP is supplied in Tape & Reel packaging with extended operating temperature range (-55 to 175°C vs. -55 to 150°C). Selection between bulk and tape & reel depends on production volume and assembly automation requirements.

Q: Can SMCJ11CA-13-F substitute for SMCJ10C?

A: No, not as a direct replacement. SMCJ11CA-13-F operates at 11V reverse standoff with 18.2V clamping voltage, representing a different voltage class. Use only when circuit design permits the higher voltage threshold.

Q: What does "Tape & Reel (TR)" packaging mean?

A: Tape & Reel packaging supplies components wound on continuous carrier tape within a protective reel, optimized for automated pick-and-place assembly. Bulk packaging supplies loose components suitable for manual assembly or lower-volume applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All active substitute parts listed carry ROHS3 compliance certification, meeting current environmental and hazardous substance restrictions for electronic components.

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