SMCJ8.0 Equivalent & Substitute Parts

Part Overview

The SMCJ8.0 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. The device features an 8V reverse standoff voltage with a 14.28V maximum clamping voltage and 110.3A peak pulse current capability in a DO-214AB (SMC) package. The SMCJ8.0 is currently listed as obsolete. Equivalent and substitute parts are available from multiple manufacturers with active product status, offering comparable or enhanced electrical performance while maintaining compatibility with the original DO-214AB package footprint.

Key Parameters

Parameter	SMCJ8.0 (Littelfuse)
Voltage - Reverse Standoff (Typ)	8V
Voltage - Breakdown (Min)	8.42V
Voltage - Clamping (Max) @ Ipp	14.28V
Current - Peak Pulse (10/1000µs)	110.3A
Power - Peak Pulse	1500W
Operating Temperature Range	-55°C to 150°C
Package / Case	DO-214AB, SMC
Type	Zener
Unidirectional Channels	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SMCJ8.0 are grouped based on the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

Reverse standoff voltage: 8V (±0.5V tolerance acceptable)
Package type: DO-214AB / SMC surface mount
Unidirectional channel configuration: 1 channel
Operating temperature range: minimum -55°C to 150°C
RoHS3 compliance and MSL rating 1

Electrical Performance Variations: Substitute parts maintain the 8V reverse standoff voltage but may vary in clamping voltage (13.6V to 15V range) and peak pulse current (100A to 220.6A). These variations remain within acceptable substitution parameters for general-purpose TVS applications.

Power Dissipation Categories:

Standard power: 1500W (SMCJ series)
Enhanced power: 3000W (SMLJ series)

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse	Power - Peak Pulse	Operating Temperature	Product Status	Package
SMCJ8.0	Littelfuse Inc.	8V	14.28V	110.3A	1500W	-55°C to 150°C	Obsolete	DO-214AB
SMCJ8.0A	Taiwan Semiconductor Corporation	8V	13.6V	115A	1500W	-55°C to 150°C	Active	DO-214AB
SMCJ8.0A-13-F	Diodes Incorporated	8V	13.6V	110.3A	1500W	-55°C to 150°C	Active	DO-214AB
SMCJ8.0A-TP	Micro Commercial Co	8V	13.6V	110.3A	1500W	-55°C to 175°C	Active	DO-214AB
SMCJ8.0AE3/TR13	Microchip Technology	8V	13.6V	110.3A	1500W	-65°C to 150°C	Active	DO-214AB
SMCJ8.0E3/TR13	Microchip Technology	8V	15V	100A	1500W	-65°C to 150°C	Active	DO-214AB
SMCJ8.5A-13-F	Diodes Incorporated	8.5V	14.4V	104.2A	1500W	-55°C to 150°C	Active	DO-214AB
SMLJ8.0A	Bourns Inc.	8V	13.6V	220.6A	3000W	-55°C to 150°C	Active	DO-214AB
SMLJ8.0A-TP	Micro Commercial Co	8V	13.6V	220.6A	3000W	-55°C to 175°C	Active	DO-214AB

Engineering Selection Recommendations

Direct Equivalents (Recommended Primary Substitutes): SMCJ8.0A (Taiwan Semiconductor Corporation), SMCJ8.0A-13-F (Diodes Incorporated), and SMCJ8.0A-TP (Micro Commercial Co) provide the closest electrical match with 8V reverse standoff, 13.6V clamping voltage, and 110.3A peak pulse current. All three are active products with ROHS3 compliance and DO-214AB packaging. SMCJ8.0A-TP offers extended operating temperature to 175°C.

Extended Temperature Range Options: SMCJ8.0AE3/TR13 (Microchip Technology) extends the lower operating temperature to -65°C while maintaining 8V standoff and 13.6V clamping specifications. SMCJ8.0E3/TR13 (Microchip Technology) provides -65°C lower temperature limit with 15V clamping voltage and 100A peak pulse current.

Higher Power Dissipation Alternatives: SMLJ8.0A (Bourns Inc.) and SMLJ8.0A-TP (Micro Commercial Co) double the power dissipation capability to 3000W while maintaining 8V reverse standoff and 13.6V clamping voltage. These parts accommodate 220.6A peak pulse current and are suitable for applications requiring enhanced transient energy absorption.

Marginal Voltage Standoff Variant: SMCJ8.5A-13-F (Diodes Incorporated) features 8.5V reverse standoff voltage with 14.4V clamping voltage and 104.2A peak pulse current. This part is suitable only where the 0.5V higher standoff voltage is acceptable within circuit design margins.

All substitute parts maintain ROHS3 compliance, MSL rating 1, and DO-214AB package compatibility with the original SMCJ8.0.

Frequently Asked Questions (FAQ)

Q: Can SMCJ8.0A directly replace SMCJ8.0 in existing designs? A: Yes. SMCJ8.0A maintains the same 8V reverse standoff voltage, DO-214AB package, and comparable clamping voltage (13.6V vs. 14.28V). The electrical performance difference is within typical circuit design tolerances for general-purpose TVS applications.

Q: What is the difference between SMCJ and SMLJ series parts? A: The SMLJ series provides double the power dissipation (3000W vs. 1500W) and double the peak pulse current (220.6A vs. 110.3A) while maintaining the same 8V reverse standoff voltage and DO-214AB package. SMLJ parts are suitable for applications requiring higher transient energy absorption.

Q: Are all substitute parts pin-compatible with SMCJ8.0? A: Yes. All listed substitute parts use the DO-214AB (SMC) package with identical pin configuration and footprint compatibility.

Q: Does operating temperature range affect substitution suitability? A: Operating temperature range affects suitability only if the application requires operation outside the specified range. SMCJ8.0A-TP and SMLJ8.0A-TP extend the upper temperature to 175°C. SMCJ8.0AE3/TR13 and SMCJ8.0E3/TR13 extend the lower temperature to -65°C.

Q: Can SMCJ8.5A-13-F be used as a substitute? A: SMCJ8.5A-13-F features 8.5V reverse standoff voltage instead of 8V. Substitution is acceptable only if circuit design margins accommodate the 0.5V higher standoff voltage threshold.

Q: What is the significance of the -TP and -13-F suffixes? A: These suffixes indicate packaging and tape configuration variants. -TP typically denotes tape and reel packaging. -13-F indicates specific manufacturer packaging specifications. Both variants maintain electrical equivalence with the base part number.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant with MSL rating 1 (unlimited moisture sensitivity level).

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message