LCE85 Equivalent & Substitute Parts

Part Overview

The LCE85 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for telecom applications. This component features an 85V reverse standoff voltage with a 129V maximum clamping voltage and 11.6A peak pulse current capability in a DO-201 axial package. The LCE85 is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing system support. The LCE85A serves as the direct active substitute, maintaining identical electrical specifications while offering improved availability and current manufacturing status.

Substiute Parts

LCE85

Littelfuse Inc.In Stock: 801LCE85 Datasheet

Current PartRFQ

LCE85A

Littelfuse Inc.In Stock: 1079LCE85A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LCE85 with the LCE85A is based on electrical and mechanical parameter equivalence. Both parts maintain identical specifications across all critical performance parameters:

Key Substitution Parameters:

• Voltage - Reverse Standoff (Typ): 85V
• Voltage - Breakdown (Min): 94.4V
• Voltage - Clamping (Max) @ Ipp: 129V
• Current - Peak Pulse (10/1000µs): 11.6A
• Power - Peak Pulse: 1500W
• Operating Temperature Range: -55°C to 175°C
• Package / Case: DO-201AA, DO-27, Axial
• Type: Zener, Unidirectional (1 channel)

The LCE85A differs from the LCE85 only in product status (Active vs. Obsolete), packaging format (Tape & Reel vs. standard), and application classification (General Purpose vs. Telecom). These differences do not affect electrical or mechanical compatibility in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The LCE85A is the direct equivalent substitute for the LCE85 TVS diode. Selection of the LCE85A is based on the following engineering criteria:

Product Status: The LCE85 is classified as obsolete, while the LCE85A maintains active manufacturing status. For new designs and long-term system support, the LCE85A is the appropriate selection.

Electrical Equivalence: All electrical parameters are identical between the two parts, including voltage ratings, current handling, and power dissipation specifications. Circuit performance remains unchanged upon substitution.

Compliance: Both parts maintain RoHS compliance (LCE85: RoHS Compliant; LCE85A: ROHS3 Compliant) and share identical ECCN and HTSUS classifications, ensuring regulatory compatibility.

Packaging Consideration: The LCE85A is supplied in Tape & Reel format, which is standard for active production components. The DO-201 axial package remains identical, ensuring mechanical compatibility with existing PCB layouts and through-hole assembly processes.

Availability: The LCE85A demonstrates superior inventory availability (977 Pcs in stock) compared to the obsolete LCE85 (740 Pcs), supporting production continuity and supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can the LCE85A be used as a direct replacement for the LCE85 in existing designs?

A: Yes. The LCE85A is electrically and mechanically equivalent to the LCE85. All voltage ratings, current specifications, temperature ranges, and package dimensions are identical. Direct substitution in circuit applications is supported without design modifications.

Q: What is the primary reason for substituting the LCE85 with the LCE85A?

A: The LCE85 is classified as obsolete, while the LCE85A maintains active manufacturing status. Substitution ensures access to current production inventory and long-term component availability for new designs and system maintenance.

Q: Are there any differences in RoHS compliance between the LCE85 and LCE85A?

A: Both parts are RoHS compliant. The LCE85 carries RoHS Compliant status, while the LCE85A carries ROHS3 Compliant status. Both meet applicable environmental and hazardous substance restrictions. The LCE85A also carries REACH Unaffected status.

Q: Does the Tape & Reel packaging of the LCE85A affect compatibility?

A: No. Tape & Reel is a supply format for automated assembly processes. The actual component package remains DO-201 axial, identical to the LCE85. Mechanical fit and electrical performance are unchanged.

Q: What are the critical electrical parameters that define substitution eligibility?

A: Substitution is determined by matching the following parameters: Voltage - Reverse Standoff (85V), Voltage - Breakdown (94.4V minimum), Voltage - Clamping (129V maximum), Current - Peak Pulse (11.6A), Power - Peak Pulse (1500W), Operating Temperature Range (-55°C to 175°C), and Package Type (DO-201 axial). The LCE85A matches all these specifications.

Q: Can the LCE85A be used in telecom applications originally specified for the LCE85?

A: Yes. The LCE85A is rated for General Purpose applications, which encompasses telecom use cases. All electrical specifications required for telecom transient voltage suppression are maintained.

Q: Is there any difference in thermal performance between the LCE85 and LCE85A?

A: No. Both parts share identical operating temperature ranges (-55°C to 175°C junction temperature) and power dissipation ratings (1500W peak pulse). Thermal performance is equivalent.