SMLJ6.5A-TP Equivalent & Substitute Parts

Part Overview

The SMLJ6.5A-TP is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 6.5V reverse standoff voltage, 11.2V maximum clamping voltage, and 3000W peak pulse power rating in a DO-214AB (SMC) package. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical characteristics and package compatibility to support design flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	6.5V
Voltage - Breakdown (Min)	7.22V
Voltage - Clamping (Max) @ Ipp	11.2V
Current - Peak Pulse (10/1000µs)	267.9A
Power - Peak Pulse	3000W
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 175°C
Type	Zener
Unidirectional Channels	1

Substitute Part Grouping Explanation

Substitute parts for the SMLJ6.5A-TP are identified based on the following critical parameters that determine functional equivalence:

Voltage - Reverse Standoff: 6.5V (exact match required)
Voltage - Clamping (Max) @ Ipp: 11.2V (exact match required)
Package / Case: DO-214AB, SMC (exact match required)
Mounting Type: Surface Mount (exact match required)
Type: Zener, Unidirectional (exact match required)

The substitute parts listed below maintain these core electrical and mechanical specifications. Variations in Current - Peak Pulse and Power - Peak Pulse ratings are noted, as these parameters may differ between manufacturers while maintaining the same voltage protection characteristics and package form factor.

Parameter Comparison

Parameter	SMLJ6.5A-TP (Micro Commercial Co)	SMDJ6.5A (Alpha & Omega Semiconductor Inc.)	SMCJ6.5A (Taiwan Semiconductor Corporation)	SMLJ6.5A (Bourns Inc.)
Voltage - Reverse Standoff (Typ)	6.5V	6.5V	6.5V	6.5V
Voltage - Breakdown (Min)	7.22V	7.22V	7.22V	7.22V
Voltage - Clamping (Max) @ Ipp	11.2V	11.2V	11.2V	11.2V
Current - Peak Pulse (10/1000µs)	267.9A	267.9A	140A	267.9A
Power - Peak Pulse	3000W	3000W	1500W	3000W
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature Range	-55°C ~ 175°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Type	Zener	Zener	Zener	Zener
Unidirectional Channels	1	1	1	1
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment and long-term availability. The SMDJ6.5A (Alpha & Omega Semiconductor Inc.) and SMLJ6.5A (Bourns Inc.) provide identical electrical performance to the original SMLJ6.5A-TP, with matching 267.9A peak pulse current and 3000W power ratings. These parts are suitable for direct substitution in applications requiring maximum transient energy absorption.

The SMCJ6.5A (Taiwan Semiconductor Corporation) maintains voltage protection specifications but operates at reduced peak pulse current (140A) and power dissipation (1500W). This part is suitable for applications with lower transient energy requirements or where cost optimization is prioritized within the voltage protection envelope.

Operating temperature range differences exist: the original SMLJ6.5A-TP operates to 175°C, while substitute parts operate to 150°C. Applications requiring operation above 150°C junction temperature must retain the original part.

Frequently Asked Questions (FAQ)

Q: Can SMCJ6.5A replace SMLJ6.5A-TP in all applications?

A: The SMCJ6.5A maintains identical voltage protection characteristics (6.5V standoff, 11.2V clamping) and package form factor. However, it operates at 140A peak pulse current versus 267.9A for the original part. Substitution is valid only for applications where transient energy does not exceed 1500W peak pulse power. Applications requiring higher energy absorption must use SMDJ6.5A or SMLJ6.5A alternatives.

Q: What is the difference between SMLJ6.5A-TP and SMLJ6.5A (Bourns)?

A: Both parts share identical electrical specifications (267.9A peak pulse, 3000W power, 11.2V clamping) and DO-214AB package. The primary difference is manufacturer: Micro Commercial Co versus Bourns Inc. Operating temperature ranges differ slightly (175°C versus 150°C maximum junction temperature). Both are ROHS3 compliant and Active status.

Q: Are all substitute parts in the same DO-214AB package?

A: Yes. All listed substitute parts use the DO-214AB (SMC) surface-mount package, ensuring mechanical and electrical compatibility with the original SMLJ6.5A-TP footprint and PCB layout.

Q: Which substitute part provides the best performance match?

A: SMDJ6.5A (Alpha & Omega Semiconductor Inc.) and SMLJ6.5A (Bourns Inc.) provide complete electrical equivalence to the original part, with matching 267.9A peak pulse current and 3000W power dissipation. Selection between these and the original part depends on supply availability, lead time, and cost considerations.

Q: Are all parts ROHS3 compliant?

A: Yes. The original SMLJ6.5A-TP and all listed substitute parts are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.

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