LCE6.5A Equivalent & Substitute Parts

Part Overview

The LCE6.5A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient protection applications. This through-hole component operates across a wide temperature range of -55°C to 175°C and is ROHS3 compliant. The part is currently in active production status with 1053 units available in inventory. Alternative models become necessary when higher peak pulse current capacity or increased power dissipation capability is required within the same voltage protection specification.

Substiute Parts

LCE6.5A

Littelfuse Inc.In Stock: 1150LCE6.5A Datasheet

Current PartRFQ

5KP6.5A

Littelfuse Inc.In Stock: 26955KP6.5A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 5KP6.5A qualifies as a direct substitute based on the following critical parameters that determine functional equivalence:

• Voltage - Reverse Standoff (Typ): Both parts maintain 6.5V
• Voltage - Breakdown (Min): Both parts specify 7.22V
• Voltage - Clamping (Max) @ Ipp: Both parts clamp at 11.2V
• Type: Both are unidirectional Zener TVS diodes
• Unidirectional Channels: Both feature 1 channel
• Mounting Type: Both are through-hole components
• Operating Temperature Range: Both operate across -55°C to 175°C
• RoHS Status: Both are ROHS3 compliant
• Product Status: Both are active production parts

The 5KP6.5A provides enhanced performance characteristics with higher peak pulse current (455.4A versus 100A) and increased power dissipation capability (5000W versus 1500W), making it suitable for applications requiring greater transient energy absorption while maintaining identical voltage protection specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the LCE6.5A and 5KP6.5A are active production components manufactured by Littelfuse Inc. and maintain full ROHS3 compliance. Selection between these parts depends on application-specific transient energy requirements. The LCE6.5A is suitable for applications with peak pulse currents up to 100A and power dissipation requirements up to 1500W. The 5KP6.5A accommodates higher transient stress with peak pulse current capacity of 455.4A and power dissipation up to 5000W. Both parts maintain identical voltage protection characteristics (6.5V standoff, 11.2V clamping), ensuring functional compatibility in circuits designed for this voltage class. Package differences (DO-201AA/DO-27 versus P600) must be verified against PCB layout and thermal management requirements.

Frequently Asked Questions (FAQ)

Q: Can the 5KP6.5A directly replace the LCE6.5A in existing designs?

A: Yes, from a voltage protection standpoint. Both parts maintain identical reverse standoff voltage (6.5V), breakdown voltage (7.22V), and clamping voltage (11.2V). However, the different package types (DO-201AA/DO-27 versus P600) require verification of PCB footprint compatibility and thermal dissipation capability.

Q: What is the primary difference between these two parts?

A: The 5KP6.5A provides significantly higher peak pulse current handling (455.4A versus 100A) and power dissipation capacity (5000W versus 1500W). Both maintain identical voltage specifications, making the 5KP6.5A suitable for higher-energy transient protection applications.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the LCE6.5A and 5KP6.5A operate across -55°C to 175°C junction temperature, ensuring compatibility across equivalent thermal environments.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant and maintain active production status with Littelfuse Inc., ensuring consistent availability and regulatory compliance.

Q: What packaging considerations apply when substituting between these parts?

A: The LCE6.5A uses DO-201AA/DO-27 axial packaging, while the 5KP6.5A uses P600 axial packaging. Physical dimensions and PCB footprints differ, requiring layout verification before implementation.