SMCJ110C Equivalent & Substitute Parts

Part Overview

The SMCJ110C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This bidirectional zener diode operates with a reverse standoff voltage of 110V and provides clamping protection at 185.85V maximum. The component is packaged in DO-214AB (SMC) surface mount configuration with a peak pulse power rating of 1500W.

The SMCJ110C is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	110	V
Voltage - Breakdown (Min)	115.65	V
Voltage - Clamping (Max) @ Ipp	185.85	V
Current - Peak Pulse (10/1000µs)	8.5	A
Power - Peak Pulse	1500	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Type	Zener	—
Bidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the SMCJ110C is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - Reverse Standoff (Typ): 110V
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Type: Zener
Bidirectional Channels: 1
Applications: General Purpose

Allowable Variation Parameters:

Voltage - Clamping (Max) @ Ipp: Range 177V to 196V (substitute parts exhibit lower clamping voltages than the original 185.85V, which is acceptable for overvoltage protection applications)
Current - Peak Pulse (10/1000µs): Range 7.7A to 16.8A (substitute parts may have equal or higher current ratings)
Power - Peak Pulse: Range 1500W to 3000W (substitute parts may have equal or higher power ratings)
Operating Temperature Range: -55°C to 175°C (substitute parts may have extended upper temperature limits)

All substitute parts listed maintain the same reverse standoff voltage, package configuration, and surface mount characteristics as the original SMCJ110C, ensuring direct functional replacement in circuit applications.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package / Case	Product Status
SMCJ110C	Littelfuse Inc.	110V	185.85V	8.5A	1500W	-55 to 150°C	DO-214AB, SMC	Obsolete
SMCJ110CA	Fairchild Semiconductor	110V	177V	8.4A	1500W	-55 to 150°C	DO-214AB, SMC	Active
SMCJ110CA-13-F	Diodes Incorporated	110V	177V	8.4A	1500W	-55 to 150°C	DO-214AB, SMC	Active
SMCJ110CAE3/TR13	Microchip Technology	110V	177V	8.4A	1500W	-65 to 150°C	DO-214AB, SMC	Active
SMCJ110CE3/TR13	Microchip Technology	110V	196V	7.7A	1500W	-65 to 150°C	DO-214AB, SMC	Active
SMLJ110CA	Bourns Inc.	110V	177V	16.8A	3000W	-55 to 150°C	DO-214AB, SMC	Active
SMLJ110CA-TP	Micro Commercial Co	110V	177V	16.8A	3000W	-55 to 175°C	DO-214AB, SMC	Active
TV15C111JB-G	Comchip Technology	110V	177V	8.47A	1500W	-55 to 150°C	DO-214AB, SMC	Active
TV15C111JB-HF	Comchip Technology	110V	177V	8.47A	1500W	-55 to 150°C	DO-214AB, SMC	Active

Engineering Selection Recommendations

Primary Substitutes (Direct Replacement):

SMCJ110CA (Fairchild Semiconductor), SMCJ110CA-13-F (Diodes Incorporated), TV15C111JB-G (Comchip Technology), and TV15C111JB-HF (Comchip Technology) are direct functional equivalents. These parts maintain identical reverse standoff voltage (110V), clamping voltage within acceptable tolerance (177V vs. 185.85V), current rating (8.4A to 8.47A), and power dissipation (1500W). All are ROHS3 compliant with MSL 1 rating and active product status.

Extended Temperature Range Alternative:

SMCJ110CAE3/TR13 (Microchip Technology) provides extended lower operating temperature limit (-65°C vs. -55°C) while maintaining all other electrical parameters. This option is suitable for applications requiring enhanced cold-temperature performance.

Higher Power Dissipation Alternatives:

SMLJ110CA (Bourns Inc.) and SMLJ110CA-TP (Micro Commercial Co) offer doubled peak pulse power rating (3000W vs. 1500W) and doubled peak pulse current (16.8A vs. 8.5A). These parts are suitable for applications requiring enhanced transient energy absorption. SMLJ110CA-TP additionally supports extended upper operating temperature to 175°C.

Higher Clamping Voltage Alternative:

SMCJ110CE3/TR13 (Microchip Technology) provides increased clamping voltage (196V vs. 185.85V) with slightly reduced peak pulse current (7.7A vs. 8.5A). This option is applicable where higher voltage clamping is acceptable within circuit design margins.

All substitute parts are ROHS3 compliant and carry MSL 1 rating, ensuring compatibility with standard surface mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can SMLJ110CA replace SMCJ110C directly?

A: SMLJ110CA is electrically compatible as a substitute. It maintains the same 110V reverse standoff voltage and DO-214AB SMC package. However, SMLJ110CA provides doubled peak pulse current (16.8A vs. 8.5A) and power dissipation (3000W vs. 1500W). This higher rating does not create incompatibility; the part will function correctly in circuits designed for SMCJ110C. Verify that PCB thermal design accommodates the potentially different thermal characteristics.

Q: What is the difference between SMCJ110CA and TV15C111JB-G?

A: Both parts are functionally equivalent with 110V reverse standoff voltage, 177V clamping voltage, and 1500W peak pulse power. The primary difference is manufacturer: SMCJ110CA is from Fairchild Semiconductor, while TV15C111JB-G is from Comchip Technology. Both are active products with ROHS3 compliance and MSL 1 rating. Selection may be based on supplier availability or procurement preference.

Q: Is SMCJ110CE3/TR13 compatible with SMCJ110C?

A: SMCJ110CE3/TR13 is compatible as a substitute. It maintains 110V reverse standoff voltage and DO-214AB SMC package. The clamping voltage is higher (196V vs. 185.85V), which is acceptable for overvoltage protection applications. Peak pulse current is slightly lower (7.7A vs. 8.5A). Verify that the higher clamping voltage does not exceed protected circuit component voltage ratings.

Q: Can I use SMCJ110CAE3/TR13 in place of SMCJ110C?

A: Yes. SMCJ110CAE3/TR13 is a direct functional equivalent with identical 110V reverse standoff voltage, 177V clamping voltage, and 1500W power rating. The extended lower operating temperature limit (-65°C vs. -55°C) provides additional margin for cold-environment applications. No circuit modifications are required.

Q: What packaging options are available for these substitutes?

A: All listed substitute parts are supplied in DO-214AB (SMC) surface mount package, matching the original SMCJ110C configuration. Packaging variants include Tape & Reel (TR) and Bulk options depending on manufacturer and part number suffix. Verify packaging specification with supplier to ensure compatibility with assembly equipment and procurement requirements.

Q: Are all substitutes ROHS3 compliant?

A: All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, ensuring compatibility with standard surface mount assembly processes and environmental regulations.

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