SMCJ8.0CA-M3/9AT Equivalent & Substitute Parts

Part Overview

The SMCJ8.0CA-M3/9AT is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 8V reverse standoff voltage class and provides 13.6V clamping protection with 110.3A peak pulse current capability. The part is actively produced and RoHS3 compliant, designed for general-purpose transient suppression applications in surface mount configurations using the DO-214AB (SMC) package. Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the same package class.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	8	V
Voltage - Breakdown (Min)	8.89	V
Voltage - Clamping (Max) @ Ipp	13.6	V
Current - Peak Pulse (10/1000µs)	110.3	A
Power - Peak Pulse	1500	W
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Surface Mount	-
Package / Case	DO-214AB, SMC	-
Type	Zener	-
Bidirectional Channels	1	-

Substitute Part Grouping Explanation

Substitute parts for the SMCJ8.0CA-M3/9AT are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - Reverse Standoff (Typ): 8V
Voltage - Breakdown (Min): 8.89V
Voltage - Clamping (Max) @ Ipp: 13.6V
Operating Temperature Range: -55°C to 150°C (TJ)
Mounting Type: Surface Mount
Package / Case: DO-214AB, SMC
Type: Zener
Bidirectional Channels: 1
RoHS3 Compliance: Required

Allowable Variation:

Current - Peak Pulse (10/1000µs): 110.3A to 220.6A (higher current capability acceptable for same voltage class)
Power - Peak Pulse: 1500W to 3000W (higher power rating acceptable)
Manufacturer: Different manufacturers permitted if electrical specifications match

Substitutes are grouped into two categories: direct equivalents with identical electrical specifications and manufacturer-recommended alternatives with enhanced current/power ratings within the same voltage protection class.

Parameter Comparison

Parameter	SMCJ8.0CA-M3/9AT (Vishay)	SMCJ8.0CA-E3/57T (Vishay)	SMCJ8.0CA (Taiwan Semi)	SMCJ8.0CA-13-F (Diodes Inc.)	SMDJ8.0CA (Alpha & Omega)
Voltage - Reverse Standoff (Typ)	8V	8V	8V	8V	8V
Voltage - Breakdown (Min)	8.89V	8.89V	8.89V	8.89V	8.89V
Voltage - Clamping (Max) @ Ipp	13.6V	13.6V	13.6V	13.6V	13.6V
Current - Peak Pulse (10/1000µs)	110.3A	110.3A	115A	110.3A	220.6A
Power - Peak Pulse	1500W	1500W	1500W	1500W	3000W
Operating Temperature Range	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Type	Zener	Zener	Zener	Zener	Zener
Bidirectional Channels	1	1	1	1	1
RoHS3 Compliance	Yes	Yes	Yes	Yes	Yes

Engineering Selection Recommendations

Direct Equivalents (Identical Electrical Specifications):

SMCJ8.0CA-E3/57T (Vishay) and SMCJ8.0CA-13-F (Diodes Incorporated) are direct functional equivalents to the SMCJ8.0CA-M3/9AT. Both maintain identical voltage protection parameters (8V standoff, 13.6V clamping) and peak pulse current (110.3A). All three parts are active products with RoHS3 compliance and REACH unaffected status. Selection among these three is based on packaging availability (Tape & Reel format) and inventory requirements.

Enhanced Performance Alternative:

SMDJ8.0CA (Alpha & Omega Semiconductor Inc.) provides the same voltage protection class (8V standoff, 13.6V clamping) but with doubled peak pulse current (220.6A) and doubled power dissipation capability (3000W). This part is suitable for applications requiring higher transient energy absorption within the same voltage protection specification. Active product status and RoHS3 compliance are maintained.

Cross-Manufacturer Option:

SMCJ8.0CA (Taiwan Semiconductor Corporation) from a different manufacturer maintains all critical voltage parameters and operating temperature range. Peak pulse current is specified at 115A, within acceptable tolerance of the 110.3A baseline. This option provides supply chain flexibility while maintaining electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can SMDJ8.0CA be used as a direct replacement for SMCJ8.0CA-M3/9AT?

A: Yes. Both parts maintain identical voltage protection parameters (8V reverse standoff, 13.6V clamping). The SMDJ8.0CA provides higher peak pulse current (220.6A vs. 110.3A) and power dissipation (3000W vs. 1500W), making it suitable for applications with higher transient energy requirements. The same DO-214AB (SMC) package ensures mechanical compatibility.

Q: Are there packaging differences between substitute parts?

A: SMCJ8.0CA-M3/9AT, SMCJ8.0CA-E3/57T, and SMCJ8.0CA-13-F are supplied in Tape & Reel (TR) format. SMCJ8.0CA (Taiwan Semiconductor) does not specify packaging format in the provided data. All parts use the DO-214AB (SMC) surface mount package, ensuring PCB footprint compatibility.

Q: What is the difference between SMCJ and SMDJ series designations?

A: Both SMCJ8.0CA and SMDJ8.0CA are 8V class bidirectional TVS diodes in DO-214AB packages. The SMDJ designation indicates a higher power rating (3000W vs. 1500W) with correspondingly higher peak pulse current capability (220.6A vs. 110.3A). Voltage protection parameters remain identical.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance and REACH unaffected status, matching the compliance profile of the SMCJ8.0CA-M3/9AT.

Q: Can I substitute based on current rating alone?

A: No. Substitution must maintain all critical voltage parameters: 8V reverse standoff, 8.89V minimum breakdown, and 13.6V maximum clamping voltage. Current and power ratings may be equal or higher, but voltage specifications must match exactly.

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