LCE15-B Equivalent & Substitute Parts

Part Overview

The LCE15-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for telecom applications. This component features a 15V reverse standoff voltage with a 24.4V maximum clamping voltage and 61A peak pulse current capability in a DO-201 axial package. The LCE15-B is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure ongoing component availability for new production and field service applications.

Substiute Parts

LCE15-B

Littelfuse Inc.In Stock: 831LCE15-B Datasheet

Current PartRFQ

LCE15A

Littelfuse Inc.In Stock: 2372LCE15A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete LCE15-B is based on electrical and mechanical parameter equivalence within the Littelfuse LCE series. The substitute part LCE15A maintains identical electrical specifications across all critical parameters: 15V reverse standoff voltage, 16.7V minimum breakdown voltage, 24.4V maximum clamping voltage, and 61A peak pulse current. Both parts operate across the same temperature range (-55°C to 175°C) and utilize the same DO-201 axial package configuration. The primary distinction is product status: LCE15-B is obsolete, while LCE15A is active production. Substitution is valid when the following parameters are matched:

• Voltage - Reverse Standoff (Typ): 15V
• Voltage - Clamping (Max) @ Ipp: 24.4V
• Current - Peak Pulse (10/1000µs): 61A
• Package / Case: DO-201
• Operating Temperature Range: -55°C to 175°C

Parameter Comparison

Engineering Selection Recommendations

The LCE15A is the direct substitute for the obsolete LCE15-B. Both components are manufactured by Littelfuse Inc. and share identical electrical and thermal specifications. The LCE15A is currently in active production status, ensuring long-term availability and supply chain continuity. Both parts maintain RoHS compliance (LCE15-B: RoHS Compliant; LCE15A: ROHS3 Compliant) and carry identical export classification (EAR99) and tariff codes (8541.10.0080). The LCE15A is supplied in Cut Tape (CT) packaging with Through Hole mounting configuration, suitable for standard PCB assembly processes. Selection of LCE15A eliminates obsolescence risk while maintaining full electrical and mechanical compatibility with existing designs specified for LCE15-B.

Frequently Asked Questions (FAQ)

Q: Can LCE15A be used as a direct replacement for LCE15-B in existing designs?

A: Yes. The LCE15A is electrically and mechanically equivalent to LCE15-B. Both components feature identical voltage ratings (15V reverse standoff, 24.4V clamping), current handling (61A peak pulse), temperature range (-55°C to 175°C), and DO-201 axial package configuration. The primary difference is product status: LCE15-B is obsolete while LCE15A is active production.

Q: What is the difference between the packaging specifications for LCE15-B and LCE15A?

A: LCE15-B packaging details are not specified in the component data. LCE15A is supplied in Cut Tape (CT) packaging with Through Hole mounting type. Both components use the DO-201 axial package format. Verify packaging requirements for your specific assembly process.

Q: Are there any compliance or certification differences between LCE15-B and LCE15A?

A: Both components are RoHS compliant (LCE15-B: RoHS Compliant; LCE15A: ROHS3 Compliant). Both carry identical ECCN classification (EAR99), HTSUS tariff code (8541.10.0080), and Moisture Sensitivity Level (MSL 1 - Unlimited). LCE15A includes REACH Unaffected status. No compliance barriers exist for substitution.

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

A: Substitution is valid when the following parameters match: Voltage - Reverse Standoff (15V), Voltage - Clamping (24.4V), Current - Peak Pulse (61A), Operating Temperature Range (-55°C to 175°C), and Package Type (DO-201 axial). The LCE15A meets all these criteria.

Q: Is the LCE15A suitable for the same telecom applications as the LCE15-B?

A: The LCE15A is specified for General Purpose applications. The LCE15-B was specified for Telecom applications. Both components share identical electrical specifications and operating parameters. Application suitability depends on circuit-level requirements beyond component specifications.

Q: What inventory status should be considered when selecting between these parts?

A: LCE15-B inventory is listed as 810 pieces (obsolete status). LCE15A inventory is listed as 2343 pieces (active production). For new designs and ongoing production, LCE15A is the appropriate selection due to active status and higher availability.