SMLJ8.0CA Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SMLJ8.0CA is a bidirectional Zener TVS diode manufactured by Bourns Inc., designed for transient voltage suppression in general-purpose applications. This surface-mount component operates with an 8V reverse standoff voltage and provides 13.6V clamping at peak pulse current. The part is RoHS3 compliant and currently in active production status with 1413 units in stock. Equivalent and substitute parts are identified based on matching electrical characteristics and mechanical compatibility within the DO-214AB (SMC) package format.

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)	220.6	A
Power - Peak Pulse	3000	W
Operating Temperature Range	-55 to 150	°C
Package / Case	DO-214AB, SMC	-
Mounting Type	Surface Mount	-
Bidirectional Channels	1	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the SMLJ8.0CA are classified based on electrical parameter matching and mechanical compatibility. The primary substitution criteria are:

Critical Matching Parameters:

Voltage - Reverse Standoff: 8V
Voltage - Clamping (Max) @ Ipp: 13.6V
Package / Case: DO-214AB (SMC)
Mounting Type: Surface Mount
Bidirectional Channels: 1
Type: Zener

Secondary Consideration Parameters:

Current - Peak Pulse (10/1000µs): Tolerance range 110.3A to 220.6A
Power - Peak Pulse: 1500W to 3000W
Operating Temperature Range: -55°C minimum to 150°C or higher maximum

Parts are grouped as direct equivalents when all critical parameters match exactly. Parts with reduced peak pulse current or power ratings are classified as similar substitutes suitable for lower-stress applications.

Parameter Comparison

Parameter	SMLJ8.0CA (Bourns)	SMDJ8.0CA (Alpha & Omega)	SMCJ8.0CA (Taiwan Semi)	SMCJ8.0CA-13-F (Diodes Inc)	SMCJ8.0CA-TP (Micro Commercial)
Manufacturer	Bourns Inc.	Alpha & Omega Semiconductor Inc.	Taiwan Semiconductor Corporation	Diodes Incorporated	Micro Commercial Co
Voltage - Reverse Standoff (Typ)	8V	8V	8V	8V	8V
Voltage - Breakdown (Min)	8.89V	8.89V	8.89V	8.89V	8.9V
Voltage - Clamping (Max) @ Ipp	13.6V	13.6V	13.6V	13.6V	13.6V
Current - Peak Pulse (10/1000µs)	220.6A	220.6A	115A	110.3A	110.3A
Power - Peak Pulse	3000W	3000W	1500W	1500W	1500W
Operating Temperature Range	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 175°C
Package / Case	DO-214AB, SMC	DO-214AB	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Equivalent (Full Specification Match):

SMDJ8.0CA (Alpha & Omega Semiconductor Inc.) is a direct equivalent to the SMLJ8.0CA. Both parts share identical electrical specifications: 8V reverse standoff, 13.6V clamping voltage, 220.6A peak pulse current, and 3000W peak pulse power. Both are RoHS3 compliant, active production status, and packaged in DO-214AB format. This part is suitable for one-to-one replacement in all applications where the SMLJ8.0CA is specified.

Similar Substitutes (Reduced Power Rating):

SMCJ8.0CA (Taiwan Semiconductor Corporation), SMCJ8.0CA-13-F (Diodes Incorporated), and SMCJ8.0CA-TP (Micro Commercial Co) are similar substitutes with matching voltage specifications (8V standoff, 13.6V clamping) but reduced peak pulse current and power ratings. These parts deliver 110.3A to 115A peak pulse current and 1500W peak pulse power, representing a 50% reduction from the SMLJ8.0CA specification. All three are RoHS3 compliant and in active production. These substitutes are suitable for applications with lower transient energy requirements or where the full 3000W capability is not required.

SMCJ8.0CA-TP offers an extended operating temperature range to 175°C, providing thermal margin advantage in high-temperature environments compared to the standard -55 to 150°C range.

All substitute parts maintain the DO-214AB (SMC) surface-mount package format and are compatible with existing PCB layouts and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can SMDJ8.0CA replace SMLJ8.0CA in all applications?

A: Yes. SMDJ8.0CA is a direct equivalent with identical electrical specifications. Both parts provide 8V reverse standoff voltage, 13.6V clamping voltage, 220.6A peak pulse current, and 3000W peak pulse power. Both are RoHS3 compliant and packaged in DO-214AB format.

Q: What is the difference between SMLJ8.0CA and SMCJ8.0CA?

A: The primary difference is peak pulse current and power rating. SMLJ8.0CA delivers 220.6A and 3000W, while SMCJ8.0CA delivers 115A and 1500W. Both maintain identical voltage specifications (8V standoff, 13.6V clamping). SMCJ8.0CA is suitable for lower-energy transient suppression applications.

Q: Are all substitute parts in the same package?

A: Yes. All listed parts use the DO-214AB (SMC) surface-mount package. They are mechanically compatible and can be used interchangeably on PCBs designed for this package format.

Q: Which substitute part has the highest temperature rating?

A: SMCJ8.0CA-TP (Micro Commercial Co) operates to 175°C, compared to 150°C for other parts. This extended range is beneficial for high-temperature circuit environments.

Q: Are all parts RoHS3 compliant?

A: Yes. All listed parts, including the main part SMLJ8.0CA and all substitutes, are RoHS3 compliant.

Q: Can I use a lower-power substitute in a high-transient application?

A: No. Application selection must be based on actual transient energy requirements. If the circuit generates transients exceeding 1500W, only SMLJ8.0CA or SMDJ8.0CA (both rated 3000W) are suitable. Using an undersized part may result in component failure or inadequate protection.

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