SMCJ100C Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The SMCJ100C is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc. in DO-214AB surface mount package. This component is designed for general-purpose transient voltage suppression applications with a reverse standoff voltage of 100V and peak pulse power rating of 1500W. The SMCJ100C 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
Reverse Standoff Voltage (Typ)	100V
Voltage - Clamping (Max) @ Ipp	170.1V
Current - Peak Pulse (10/1000µs)	9.3A
Power - Peak Pulse	1500W
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 150°C (TJ)
Type	Zener
Bidirectional Channels	1
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SMCJ100C is determined by the following critical parameters:

Electrical Compatibility Requirements:

Reverse Standoff Voltage: 100V (nominal)
Voltage Breakdown (Min): 105.3V to 111V range
Bidirectional operation with single channel
Peak pulse current capability: 9.3A minimum
Peak pulse power: 1500W minimum

Mechanical Compatibility Requirements:

Package: DO-214AB / SMC surface mount
Mounting type: Surface mount
Operating temperature range: minimum -55°C to 150°C

Compliance Requirements:

ROHS3 compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories based on peak pulse current rating: standard 9.3A devices (SMCJ series) and higher-current 18.6A devices (SMLJ series). The SMLJ series provides increased current handling capacity while maintaining the same voltage parameters and package form factor.

Parameter Comparison

Part Number	Manufacturer	Status	Reverse Standoff (V)	Clamp Voltage (V)	Peak Pulse Current (A)	Peak Power (W)	Package	Temp Range (°C)	RoHS
SMCJ100C	Littelfuse Inc.	Obsolete	100	170.1	9.3	1500	DO-214AB	-55 to 150	ROHS3
SMCJ100CA	HY Electronic (Cayman) Limited	Active	100	162	9.3	1500	DO-214AB	-55 to 150	ROHS3
SMCJ100CA-13-F	Diodes Incorporated	Active	100	162	9.3	1500	DO-214AB	-55 to 150	ROHS3
SMCJ100CA-TP	Micro Commercial Co	Active	100	162	9.3	1500	DO-214AB	-55 to 175	ROHS3
SMCJ100CAE3/TR13	Microchip Technology	Active	100	162	9.3	1500	DO-214AB	-65 to 150	ROHS3
SMCJ100CE3/TR13	Microchip Technology	Active	100	179	8.4	1500	DO-214AB	-65 to 150	ROHS3
SMLJ100CA	Bourns Inc.	Active	100	162	18.6	3000	DO-214AB	-55 to 150	ROHS3
SMLJ100CA-TP	Micro Commercial Co	Active	100	162	18.6	3000	DO-214AB	-55 to 175	ROHS3
TV15C101JB-G	Comchip Technology	Active	100	162	9.26	1500	DO-214AB	-55 to 150	ROHS3

Engineering Selection Recommendations

Direct Electrical Equivalents (1500W Power Rating, 9.3A Current):

SMCJ100CA, SMCJ100CA-13-F, SMCJ100CA-TP, SMCJ100CAE3/TR13, and TV15C101JB-G provide direct electrical equivalence to the SMCJ100C with identical reverse standoff voltage, peak pulse current, and power dissipation. All are active products with ROHS3 compliance. SMCJ100CA-TP and SMCJ100CAE3/TR13 offer extended operating temperature ranges (-55°C to 175°C and -65°C to 150°C respectively) compared to the original specification. SMCJ100CE3/TR13 operates within the same temperature range but exhibits higher clamping voltage (179V) and reduced peak pulse current (8.4A), suitable only where higher clamping voltage is acceptable.

Higher Current Alternatives (3000W Power Rating, 18.6A Current):

SMLJ100CA and SMLJ100CA-TP provide double the peak pulse current (18.6A) and power dissipation (3000W) while maintaining the same reverse standoff voltage and package form factor. These components are suitable for applications requiring enhanced transient suppression capability. SMLJ100CA-TP extends the operating temperature range to -55°C to 175°C.

All substitute parts maintain DO-214AB surface mount package compatibility, ROHS3 compliance, and MSL 1 rating, ensuring direct PCB assembly compatibility with the original SMCJ100C design.

Frequently Asked Questions (FAQ)

Q: Can SMCJ100CA directly replace SMCJ100C in existing designs?

A: Yes. SMCJ100CA maintains identical reverse standoff voltage (100V), peak pulse current (9.3A), power rating (1500W), and DO-214AB package. The clamping voltage is 162V compared to 170.1V in the original, which is within acceptable tolerance for general-purpose transient suppression. All ROHS3 and MSL specifications are equivalent.

Q: What is the difference between SMCJ and SMLJ series substitutes?

A: The SMLJ series provides double the peak pulse current (18.6A) and power dissipation (3000W) compared to SMCJ series (9.3A, 1500W). Both maintain the same 100V reverse standoff voltage and DO-214AB package. SMLJ devices are suitable for applications requiring higher transient energy absorption.

Q: Are there temperature range considerations when selecting substitutes?

A: The original SMCJ100C operates from -55°C to 150°C. SMCJ100CA-TP and SMLJ100CA-TP extend the upper limit to 175°C. SMCJ100CAE3/TR13 extends the lower limit to -65°C. Selection depends on application temperature requirements.

Q: Does clamping voltage variation affect substitution compatibility?

A: Clamping voltage determines the maximum voltage transient suppression level. SMCJ100C specifies 170.1V maximum clamping. Most substitutes (SMCJ100CA series, SMLJ series, TV15C101JB-G) clamp at 162V, which is acceptable for most applications. SMCJ100CE3/TR13 clamps at 179V and should be selected only where higher clamping voltage is required or acceptable.

Q: Are all substitute parts available in tape and reel packaging?

A: Most active substitutes are available in tape and reel (TR) packaging for automated assembly. SMLJ100CA-TP is listed as bulk packaging. Verify packaging availability with suppliers for production requirements.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original SMCJ100C specifications. REACH status varies by manufacturer; verify specific requirements for your application region.

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