LCE8.0 Equivalent & Substitute Parts

Part Overview

The LCE8.0 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features an 8V reverse standoff voltage with a 14.28V maximum clamping voltage at peak pulse current. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	8V
Voltage - Breakdown (Min)	8.42V
Voltage - Clamping (Max) @ Ipp	14.28V
Current - Peak Pulse (10/1000µs)	100A
Power - Peak Pulse	1500W
Operating Temperature Range	-55°C to 175°C (TJ)
Mounting Type	Through Hole
Package / Case	DO-201AA, DO-27, Axial
Type	Zener
Unidirectional Channels	1

Substitute Part Grouping Explanation

Substitute components for the LCE8.0 are qualified based on the following critical parameters:

Voltage - Reverse Standoff: 8V (exact match required)
Voltage - Breakdown (Min): 8.42V or higher
Type: Zener, unidirectional configuration
Mounting Type: Through Hole
Operating Temperature Range: -55°C to 175°C minimum
RoHS3 Compliance: Required

The LCE8.0A qualifies as a direct substitute due to identical reverse standoff voltage (8V), matching breakdown voltage specification (8.89V), equivalent peak pulse current (100A), and identical power dissipation rating (1500W). Both components share the same through-hole axial package configuration and operating temperature range.

The 5KP8.0E3/TR13 qualifies as a functional substitute with enhanced performance characteristics. While maintaining the 8V reverse standoff voltage and compatible breakdown voltage (8.89V), this component provides higher peak pulse current capability (333A) and significantly increased power dissipation (5000W). The P600 package remains a through-hole axial configuration compatible with LCE8.0 mounting requirements.

Parameter Comparison

Parameter	LCE8.0	LCE8.0A	5KP8.0E3/TR13
Manufacturer	Littelfuse Inc.	Littelfuse	Microchip Technology
Product Status	Obsolete	Active	Active
Voltage - Reverse Standoff (Typ)	8V	8V	8V
Voltage - Breakdown (Min)	8.42V	8.89V	8.89V
Voltage - Clamping (Max) @ Ipp	14.28V	13.6V	15V
Current - Peak Pulse (10/1000µs)	100A	100A	333A
Power - Peak Pulse	1500W	1500W	5000W
Operating Temperature Range	-55°C to 175°C	-55°C to 175°C	-55°C to 175°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	DO-201AA, DO-27, Axial	DO-201AA, DO-27, Axial	P600, Axial
Type	Zener	Zener	Zener
Unidirectional Channels	1	1	1
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

The LCE8.0A is the primary direct substitute for the obsolete LCE8.0. Both components maintain identical electrical specifications for reverse standoff voltage, peak pulse current, and power dissipation. The LCE8.0A is currently in active production status with confirmed inventory availability. Both parts carry ROHS3 compliance and MSL-1 moisture sensitivity ratings, ensuring compatibility with standard manufacturing and storage protocols.

The 5KP8.0E3/TR13 serves as a performance-enhanced alternative when circuit design permits utilization of higher current and power handling capabilities. This component maintains the critical 8V reverse standoff voltage specification while offering 333A peak pulse current and 5000W power dissipation, compared to the 100A and 1500W ratings of the LCE8.0. The 5KP8.0E3/TR13 is actively manufactured by Microchip Technology with confirmed inventory availability and full ROHS3 compliance.

Selection between LCE8.0A and 5KP8.0E3/TR13 depends on circuit current and power requirements. For applications requiring equivalent performance to the original LCE8.0 specification, the LCE8.0A is the appropriate choice. For applications where enhanced transient suppression capability is beneficial, the 5KP8.0E3/TR13 provides superior performance margins.

Frequently Asked Questions (FAQ)

Q: Can the LCE8.0A directly replace the LCE8.0 in existing designs?

A: Yes. The LCE8.0A maintains identical reverse standoff voltage (8V), equivalent breakdown voltage specification, matching peak pulse current (100A), and identical power dissipation (1500W). Both components use through-hole axial packaging compatible with DO-201 footprints. No circuit modifications are required.

Q: What are the key differences between LCE8.0A and 5KP8.0E3/TR13?

A: Both maintain the 8V reverse standoff voltage required for LCE8.0 replacement. The primary differences are peak pulse current (100A vs. 333A) and power dissipation (1500W vs. 5000W). The 5KP8.0E3/TR13 uses a P600 package while the LCE8.0A uses DO-201 packaging. Both are through-hole axial configurations.

Q: Are all substitute parts RoHS compliant?

A: Yes. The LCE8.0A and 5KP8.0E3/TR13 are both ROHS3 compliant with MSL-1 moisture sensitivity ratings, matching the compliance profile of the original LCE8.0.

Q: Can the 5KP8.0E3/TR13 be used in applications designed for the LCE8.0?

A: Yes, provided the circuit board layout accommodates the P600 package footprint. The 5KP8.0E3/TR13 maintains the required 8V reverse standoff voltage and offers enhanced current and power handling. No electrical modifications are necessary.

Q: What is the current availability status of these substitute parts?

A: Both LCE8.0A and 5KP8.0E3/TR13 are in active production with confirmed new original inventory in stock.

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