SMCJ6.0 Transient Voltage Suppressor Diode Equivalent & Substitute Parts

Part Overview

The SMCJ6.0 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose overvoltage protection in surface-mount applications. The device features a 6V reverse standoff voltage with a 10.82V maximum clamping voltage at peak pulse current of 145.7A, packaged in the DO-214AB (SMC) form factor. The SMCJ6.0 is classified as obsolete; equivalent and substitute parts from active manufacturers are available to maintain design continuity and ensure supply chain reliability.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	6	V
Voltage - Breakdown (Min)	6.32	V
Voltage - Clamping (Max) @ Ipp	10.82	V
Current - Peak Pulse (10/1000µs)	145.7	A
Power - Peak Pulse	1500	W
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	DO-214AB, SMC	—
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitution eligibility for the SMCJ6.0 is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - Reverse Standoff: 6V (exact match required)
Voltage - Breakdown (Min): 6.32V to 6.67V (acceptable range)
Voltage - Clamping (Max) @ Ipp: 10.3V to 11.4V (acceptable range)
Current - Peak Pulse (10/1000µs): minimum 145.6A
Power - Peak Pulse: minimum 1500W
Mounting Type: Surface Mount
Package / Case: DO-214AB, SMC
Type: Zener
Unidirectional Channels: 1

Substitute Groups:

Group A - Standard Performance (1500W Peak Power): SMCJ6.0A (Taiwan Semiconductor Corporation), SMCJ6.0A-13-F (Diodes Incorporated), SMCJ6.0AE3/TR13 (Microchip Technology), SMCJ6.0E3/TR13 (Microchip Technology), SMCJ6V0A (Fairchild Semiconductor), TV15C6V0J-G (Comchip Technology)

Group B - Enhanced Performance (3000W Peak Power): SMLJ6.0A (Bourns Inc.), SMLJ6.0A-TP (Micro Commercial Co), SMLJ6.0AE3/TR13 (Microchip Technology)

Group A substitutes maintain electrical and thermal performance equivalent to the original SMCJ6.0. Group B substitutes provide higher peak pulse power dissipation capability (3000W vs. 1500W) while maintaining compatible voltage and current ratings, suitable for applications requiring enhanced transient energy absorption.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package / Case	Product Status
SMCJ6.0	Littelfuse	6V	6.32V	10.82V	145.7A	1500W	-55 to 150°C	DO-214AB, SMC	Obsolete
SMCJ6.0A	Taiwan Semiconductor Corporation	6V	6.67V	10.3V	152A	1500W	-55 to 150°C	DO-214AB, SMC	Active
SMCJ6.0A-13-F	Diodes Incorporated	6V	6.67V	10.3V	145.6A	1500W	-55 to 150°C	DO-214AB, SMC	Active
SMCJ6.0AE3/TR13	Microchip Technology	6V	6.67V	10.3V	145.6A	1500W	-65 to 150°C	DO-214AB, SMC	Active
SMCJ6.0E3/TR13	Microchip Technology	6V	6.67V	11.4V	131.6A	1500W	-65 to 150°C	DO-214AB, SMC	Active
SMCJ6V0A	Fairchild Semiconductor	6V	6.67V	10.3V	145.6A	1500W	Not specified	DO-214AB, SMC	Active
SMLJ6.0A	Bourns Inc.	6V	6.67V	10.3V	291.3A	3000W	-55 to 150°C	DO-214AB, SMC	Active
SMLJ6.0A-TP	Micro Commercial Co	6V	6.67V	10.3V	291.3A	3000W	-55 to 175°C	DO-214AB, SMC	Active
SMLJ6.0AE3/TR13	Microchip Technology	6V	6.67V	10.3V	291.3A	3000W	-55 to 150°C	DO-214AB, SMC	Active
TV15C6V0J-G	Comchip Technology	6V	6.67V	10.3V	146.63A	1500W	-55 to 150°C	DO-214AB, SMC	Active

Engineering Selection Recommendations

For Direct Replacement (Equivalent Performance): Select SMCJ6.0A (Taiwan Semiconductor Corporation) or SMCJ6.0A-13-F (Diodes Incorporated) for direct substitution. Both maintain the 1500W peak pulse power rating and 6V reverse standoff voltage with clamping voltages within acceptable tolerance. Both manufacturers maintain active product status with established supply availability.

For Extended Temperature Range: SMCJ6.0AE3/TR13 (Microchip Technology) extends the operating temperature range to -65°C, suitable for applications requiring enhanced cold-temperature performance while maintaining equivalent electrical characteristics.

For Enhanced Transient Energy Absorption: SMLJ6.0A (Bourns Inc.), SMLJ6.0A-TP (Micro Commercial Co), or SMLJ6.0AE3/TR13 (Microchip Technology) provide 3000W peak pulse power capability, doubling the energy dissipation capacity. These are suitable for high-energy transient environments while maintaining compatible voltage and current ratings.

Compliance Considerations: All substitute parts listed maintain RoHS3 compliance. Moisture Sensitivity Level (MSL) is rated 1 (Unlimited) for all active substitutes, indicating no moisture-related handling restrictions. REACH status varies by manufacturer; verify specific REACH compliance requirements for your application region.

Frequently Asked Questions (FAQ)

Q: Can SMLJ6.0A series parts directly replace SMCJ6.0 in existing designs? A: Yes, SMLJ6.0A series parts are electrically compatible and pin-compatible in the DO-214AB package. The primary difference is increased peak pulse power rating (3000W vs. 1500W). No circuit modifications are required. Verify thermal management design if the original design was thermally constrained.

Q: What is the difference between SMCJ6.0A and SMCJ6.0AE3/TR13? A: Both maintain identical electrical performance (6V standoff, 10.3V clamping, 145.6A peak pulse). SMCJ6.0AE3/TR13 extends the operating temperature range to -65°C (vs. -55°C) and is supplied in Tape & Reel packaging. Select SMCJ6.0AE3/TR13 for cold-temperature applications or automated assembly processes.

Q: Are there inventory or lead-time considerations when selecting substitutes? A: Inventory levels vary by manufacturer and distributor. SMCJ6.0A (Taiwan Semiconductor Corporation) shows 26,213 units in stock. SMLJ6.0A (Bourns Inc.) shows 9,170 units. Verify current availability with your component supplier for production scheduling.

Q: Does the clamping voltage variation (10.3V to 11.4V) affect circuit protection? A: All substitute parts maintain clamping voltages within the acceptable range for 6V standoff TVS diodes. The variation reflects normal manufacturing tolerance across different manufacturers. Select based on your specific circuit protection threshold requirements. SMCJ6.0E3/TR13 provides the highest clamping voltage (11.4V) if maximum voltage suppression is required.

Q: What packaging options are available for automated assembly? A: SMCJ6.0AE3/TR13, SMCJ6.0E3/TR13, SMLJ6.0A, SMLJ6.0AE3/TR13, and TV15C6V0J-G are supplied in Tape & Reel (TR) packaging suitable for pick-and-place assembly. SMCJ6.0A and SMCJ6V0A are available in bulk or standard packaging. Confirm packaging availability with your distributor.

Q: Is the SMCJ6V0A from Fairchild Semiconductor a suitable substitute? A: Yes, SMCJ6V0A is electrically equivalent with 6V standoff, 10.3V clamping, and 145.6A peak pulse current. Operating temperature range is not specified in available data; contact the manufacturer or distributor for complete thermal specifications before selection.

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