LCE75A Equivalent & Substitute Parts

Part Overview

The LCE75A 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 across a temperature range of -65°C to 175°C and is RoHS3 compliant. The part is currently in active production status with 791 units available in inventory. Alternative models may be required due to application-specific power handling requirements, packaging preferences, or operational temperature constraints.

Substiute Parts

LCE75A

Littelfuse Inc.In Stock: 801LCE75A Datasheet

Current PartRFQ

5KP75A

Littelfuse Inc.In Stock: 42025KP75A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 5KP75A qualifies as a direct substitute for the LCE75A based on the following critical electrical parameters:

• Voltage - Reverse Standoff (Typ): 75V (identical)
• Voltage - Breakdown (Min): 83.3V (identical)
• Voltage - Clamping (Max) @ Ipp: 121V (identical)
• Unidirectional Channels: 1 (identical)
• Type: Zener (identical)
• RoHS Status: ROHS3 Compliant (identical)

The 5KP75A provides enhanced current handling capability (42.1A peak pulse versus 12.4A) and increased power dissipation (5000W versus 1500W), making it suitable for applications requiring higher transient energy absorption while maintaining identical voltage protection characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the LCE75A and 5KP75A are active production components from Littelfuse Inc. with identical RoHS3 compliance and REACH unaffected status. Selection between these parts depends on application power dissipation requirements:

The LCE75A is appropriate for applications with transient energy levels up to 1500W peak pulse power. The 5KP75A accommodates higher transient energy levels up to 5000W peak pulse power while maintaining identical voltage protection characteristics. The LCE75A operates across a wider temperature range (-65°C to 175°C) compared to the 5KP75A (-55°C to 175°C). Package differences (DO-201AA versus P600) may affect board layout and thermal management considerations.

Frequently Asked Questions (FAQ)

Q: Can the 5KP75A replace the LCE75A in all applications?

A: The 5KP75A provides identical voltage protection characteristics (75V standoff, 121V clamp) and can replace the LCE75A in applications where the higher current rating (42.1A versus 12.4A) and power dissipation (5000W versus 1500W) do not create thermal or layout constraints. The narrower operating temperature range of the 5KP75A (-55°C minimum versus -65°C) must be verified against application requirements.

Q: What are the package differences between LCE75A and 5KP75A?

A: The LCE75A uses DO-201AA packaging while the 5KP75A uses P600 packaging. Both are through-hole axial components. Physical dimensions and board layout compatibility must be verified for your specific application.

Q: Are both parts RoHS compliant?

A: Yes, both the LCE75A and 5KP75A are ROHS3 compliant with MSL rating of 1 (Unlimited) and REACH unaffected status.

Q: What determines substitution eligibility between these parts?

A: Substitution is based on matching voltage parameters (reverse standoff, breakdown, and clamping voltages), unidirectional channel configuration, and zener type. The 5KP75A meets all these criteria. Application-specific constraints such as operating temperature range, available board space, and maximum allowable transient energy must be evaluated.