SMCJ6.5A Equivalent & Substitute Parts

Part Overview

The SMCJ6.5A 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 a 6.5V reverse standoff voltage with an 11.2V maximum clamping voltage and 134A peak pulse current capability. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity across multiple manufacturers while maintaining electrical and mechanical compatibility.

Substiute Parts

SMCJ6.5A

Littelfuse Inc.In Stock: 84183SMCJ6.5A Datasheet

Current PartRFQ

SMCJ6.5A

Taiwan Semiconductor CorporationIn Stock: 84190SMCJ6.5A Datasheet

MFR RecommendedRFQ

SMCJ6.5A-13-F

Diodes IncorporatedIn Stock: 4141SMCJ6.5A-13-F Datasheet

MFR RecommendedRFQ

SMLJ6.5A

Bourns Inc.In Stock: 15372SMLJ6.5A Datasheet

MFR RecommendedRFQ

SMLJ6.5A-TP

Micro Commercial CoIn Stock: 3790SMLJ6.5A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMCJ6.5A are grouped based on strict electrical and mechanical compatibility criteria. All substitute parts maintain the following critical parameters:

• Voltage - Reverse Standoff (Typ): 6.5V
• Voltage - Breakdown (Min): 7.22V
• Voltage - Clamping (Max) @ Ipp: 11.2V
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Type: Zener
• Unidirectional Channels: 1
• Operating Temperature Range: -55°C minimum to 150°C or higher maximum
• RoHS3 Compliance: Required

Substitutes are differentiated by peak pulse current rating and power dissipation capability. The SMCJ6.5A (134A, 1500W) is directly equivalent to the Taiwan Semiconductor Corporation SMCJ6.5A (140A, 1500W) and the Diodes Incorporated SMCJ6.5A-13-F (133.9A, 1500W). Higher-rated alternatives include the Bourns Inc. SMLJ6.5A and Micro Commercial Co SMLJ6.5A-TP, both rated at 267.9A with 3000W peak pulse power, suitable for applications requiring increased transient energy absorption.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and RoHS3 compliance, ensuring regulatory conformance and long-term availability. The Taiwan Semiconductor Corporation SMCJ6.5A and Diodes Incorporated SMCJ6.5A-13-F are direct electrical and mechanical equivalents to the Littelfuse SMCJ6.5A, with peak pulse current ratings within 6% variance and identical power dissipation specifications.

The Bourns Inc. SMLJ6.5A and Micro Commercial Co SMLJ6.5A-TP offer doubled peak pulse current (267.9A) and power dissipation (3000W) while maintaining identical voltage parameters and package form factor. These higher-rated alternatives are suitable for applications requiring enhanced transient protection margin or higher energy absorption capacity. The Micro Commercial Co SMLJ6.5A-TP extends the maximum operating temperature to 175°C, providing additional thermal headroom in high-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can the SMCJ6.5A be directly replaced with the Taiwan Semiconductor Corporation SMCJ6.5A?

A: Yes. Both parts share identical voltage specifications (6.5V standoff, 11.2V clamping), equivalent peak pulse current ratings (134A vs. 140A), and identical power dissipation (1500W). Both are packaged in DO-214AB, SMC and are RoHS3 compliant.

Q: What is the difference between SMCJ and SMLJ series substitutes?

A: The SMLJ series (Bourns SMLJ6.5A and Micro Commercial SMLJ6.5A-TP) provides doubled peak pulse current (267.9A) and power dissipation (3000W) compared to the SMCJ series (134–140A, 1500W). Voltage parameters remain identical. SMLJ parts are suitable for higher-energy transient events while maintaining the same package footprint.

Q: Are all substitute parts compatible with the same PCB layout?

A: Yes. All substitute parts use the DO-214AB, SMC surface-mount package, ensuring identical footprint and pin compatibility. No PCB redesign is required for substitution.

Q: What compliance certifications apply to all substitute parts?

A: All listed parts are RoHS3 compliant. REACH status varies by manufacturer: Littelfuse SMCJ6.5A and Bourns SMLJ6.5A are REACH Affected; Taiwan Semiconductor SMCJ6.5A, Diodes SMCJ6.5A-13-F, and Micro Commercial SMLJ6.5A-TP are REACH Unaffected.

Q: Can the Micro Commercial Co SMLJ6.5A-TP be used in applications with operating temperatures above 150°C?

A: The Micro Commercial Co SMLJ6.5A-TP is rated to 175°C maximum junction temperature, extending the thermal operating range by 25°C compared to other listed substitutes. This part is suitable for high-temperature applications within the -55°C to 175°C range.