LCE8.5A Equivalent & Substitute Parts

Part Overview

The LCE8.5A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient protection applications. This through-hole component features an 8.5V reverse standoff voltage with a 14.4V maximum clamping voltage and 100A peak pulse current capability. The device is RoHS3 compliant and actively produced. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when application requirements necessitate different electrical or mechanical characteristics within the allowed parameter range.

Substiute Parts

LCE8.5A

Littelfuse Inc.In Stock: 978LCE8.5A Datasheet

Current PartRFQ

5KP8.5A

LittelfuseIn Stock: 3001105KP8.5A Datasheet

MFR RecommendedRFQ

P6KE10A

Fairchild SemiconductorIn Stock: 5025P6KE10A Datasheet

MFR RecommendedRFQ

1N6271A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 21121N6271A-E3/54 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LCE8.5A are qualified based on the following critical parameters that determine functional equivalence:

• Voltage - Reverse Standoff (Typ): 8.5V nominal
• Voltage - Clamping (Max) @ Ipp: 14.4V to 14.5V range
• Unidirectional Channels: 1 (single channel configuration)
• Type: Zener diode
• Mounting Type: Through Hole
• Operating Temperature Range: Minimum -55°C to 175°C
• RoHS3 Compliance: Required

Substitute parts may vary in peak pulse current capability and power dissipation within the general-purpose TVS diode category, provided the voltage parameters remain within the specified tolerance and the device maintains through-hole axial mounting configuration.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain active product status and are manufactured by established semiconductor suppliers. The LCE8.5A, 5KP8.5A, and 1N6271A-E3/54 are RoHS3 compliant. The P6KE10A RoHS status is not specified in the provided data.

The 5KP8.5A offers increased peak pulse current (354.2A) and power dissipation (5000W) compared to the LCE8.5A, suitable for applications requiring higher transient energy absorption. The 1N6271A-E3/54 provides comparable electrical performance to the LCE8.5A with identical power rating (1500W) and similar peak pulse current (103A). The P6KE10A delivers reduced peak pulse current (43A) and power dissipation (600W), appropriate for lower-energy transient protection scenarios.

Package compatibility must be verified during component selection. The LCE8.5A and 1N6271A-E3/54 share DO-201AA/DO-27 axial packaging. The 5KP8.5A uses P600 axial packaging. The P6KE10A employs DO-204AC/DO-15 axial packaging. All devices maintain through-hole mounting configuration.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the LCE8.5A?

A: Substitute parts must maintain the same reverse standoff voltage (8.5V nominal), clamping voltage range (14.4V to 14.5V), unidirectional single-channel configuration, zener diode type, through-hole axial mounting, and operating temperature range of -55°C to 175°C minimum.

Q: Can the 5KP8.5A replace the LCE8.5A in all applications?

A: The 5KP8.5A is electrically equivalent in voltage parameters and maintains identical operating temperature range. However, the P600 package differs from the DO-201AA/DO-27 package of the LCE8.5A. Physical board layout and footprint compatibility must be verified before substitution.

Q: Why does the P6KE10A have lower peak pulse current than the LCE8.5A?

A: The P6KE10A is rated for 43A peak pulse current and 600W power dissipation, compared to the LCE8.5A's 100A and 1500W. This device is suitable for applications with lower transient energy requirements. Voltage protection parameters remain equivalent.

Q: Is the 1N6271A-E3/54 a direct replacement for the LCE8.5A?

A: The 1N6271A-E3/54 shares the same DO-201AA/DO-27 axial package and provides equivalent voltage protection (8.55V standoff, 14.5V clamping) with comparable peak pulse current (103A) and identical power rating (1500W). Package compatibility is direct.

Q: What is the operating temperature difference between the P6KE10A and other substitutes?

A: The P6KE10A operates from -50°C to 175°C, while the LCE8.5A, 5KP8.5A, and 1N6271A-E3/54 operate from -55°C to 175°C. Applications requiring operation below -50°C must use alternatives to the P6KE10A.

Q: Are all substitute parts RoHS3 compliant?

A: The LCE8.5A, 5KP8.5A, and 1N6271A-E3/54 are confirmed RoHS3 compliant. The P6KE10A RoHS status is not specified in available data and must be verified with the manufacturer before use in RoHS-restricted applications.