LCE64A Equivalent & Substitute Parts

Part Overview

The LCE64A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This through-hole component operates with a 64V reverse standoff voltage and provides peak pulse power dissipation of 1500W. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance parameters and mechanical compatibility are maintained within the allowed specifications for this TVS diode category.

Substiute Parts

LCE64A

Littelfuse Inc.In Stock: 704LCE64A Datasheet

Current PartRFQ

5KP64A

Diotec SemiconductorIn Stock: 384715KP64A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LCE64A are qualified based on the following critical electrical parameters that must remain equivalent or superior:

• Voltage - Reverse Standoff (Typ): 64V
• Voltage - Breakdown (Min): 71.1V
• Voltage - Clamping (Max) @ Ipp: 103V
• Unidirectional channel configuration: 1 channel
• Mounting type: Through Hole
• Package style: Axial configuration

The 5KP64A from Diotec Semiconductor meets these substitution criteria. While it provides enhanced peak pulse current (49A versus 14.6A) and higher peak pulse power (5000W versus 1500W), these represent superior performance characteristics that do not compromise compatibility. The voltage parameters, unidirectional topology, through-hole mounting, and axial package configuration remain identical to the LCE64A.

Parameter Comparison

Engineering Selection Recommendations

Both the LCE64A and 5KP64A are active production components suitable for general-purpose transient voltage suppression. The LCE64A carries RoHS3 compliance with REACH Unaffected status. The 5KP64A has not applicable RoHS status and vendor undefined REACH status per the provided specifications.

Selection between these parts should be based on:

1. Compliance requirements: If RoHS3 compliance is mandatory, the LCE64A is the specified choice.
2. Power dissipation capacity: The 5KP64A provides 3.33 times greater peak pulse power handling, suitable for applications requiring enhanced transient energy absorption.
3. Operating temperature minimum: The LCE64A operates to -65°C; the 5KP64A operates to -50°C. Applications requiring operation below -50°C require the LCE64A.
4. Package physical dimensions: Both use axial through-hole configuration but different package designations (DO-201AA/DO-27 versus P600). Physical board layout constraints may determine selection.

Frequently Asked Questions (FAQ)

Q: Can the 5KP64A directly replace the LCE64A in all applications?

A: The 5KP64A is electrically compatible for the same voltage protection function. However, verify compliance requirements (RoHS3 status), operating temperature range requirements (minimum -50°C for 5KP64A versus -65°C for LCE64A), and physical package dimensions (P600 versus DO-201AA/DO-27) against your application specifications.

Q: What is the significance of the higher peak pulse current and power ratings on the 5KP64A?

A: The 5KP64A's 49A peak pulse current and 5000W power rating represent superior transient energy handling capability compared to the LCE64A's 14.6A and 1500W. These higher ratings do not affect substitution compatibility; they indicate the 5KP64A can suppress larger transient events without degradation.

Q: Are the voltage parameters identical between these parts?

A: Yes. Both parts maintain 64V reverse standoff voltage, 71.1V minimum breakdown voltage, and 103V maximum clamping voltage. These identical voltage specifications ensure equivalent protection characteristics in the circuit.

Q: What mounting considerations apply to these through-hole components?

A: Both parts use axial through-hole mounting for PCB insertion. Verify that the specific package dimensions (DO-201AA/DO-27 for LCE64A and P600 for 5KP64A) fit your board layout and hole spacing requirements.

Q: Does the operating temperature range difference affect substitution?

A: The LCE64A operates from -65°C to 175°C; the 5KP64A from -50°C to 175°C. If your application requires operation below -50°C, the LCE64A is required. For applications within -50°C to 175°C, both are suitable.