LCE24-B Equivalent & Substitute Parts

Part Overview

The LCE24-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for telecom applications. This component features a 24V reverse standoff voltage with a 38.9V maximum clamping voltage and 39A peak pulse current capability in a DO-201 axial package format.

The LCE24-B carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing system maintenance and production requirements.

Substiute Parts

LCE24-B

Littelfuse Inc.In Stock: 1226LCE24-B Datasheet

Current PartRFQ

LCE24A

Littelfuse Inc.In Stock: 1468LCE24A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LCE24-B is determined by electrical parameter equivalence across the following critical specifications:

• Voltage Rating: Reverse standoff voltage of 24V, breakdown minimum of 26.7V, and maximum clamping voltage of 38.9V
• Current Handling: Peak pulse current of 39A at 10/1000µs pulse width
• Power Dissipation: Peak pulse power rating of 1500W
• Package Configuration: DO-201 axial through-hole format
• Device Type: Unidirectional Zener TVS diode with single channel
• Temperature Range: Operating junction temperature from -55°C to 175°C

The LCE24-A qualifies as a direct substitute based on identical electrical parameters and compatible package specifications. Both components maintain the same voltage and current ratings, power dissipation capability, and thermal operating range. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

LCE24A as Primary Substitute

The LCE24A is the direct equivalent for the obsolete LCE24-B. Both components share identical electrical specifications, thermal ratings, and package configurations. The LCE24A carries an active product status, ensuring ongoing availability and supply chain support. The LCE24A is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The component is available in Cut Tape (CT) packaging format suitable for automated assembly processes.

Product Status Consideration

The LCE24-B is classified as obsolete, while the LCE24A maintains active status. For new designs, production continuity, and long-term support, the LCE24A is the recommended selection. Both components are manufactured by Littelfuse Inc. and maintain identical electrical performance within the specified operating parameters.

Compliance and Certification

Both parts comply with RoHS directives and carry identical export control classifications (EAR99). The LCE24A provides enhanced regulatory documentation through ROHS3 compliance and explicit REACH status confirmation, supporting compliance verification in regulated industries.

Frequently Asked Questions (FAQ)

Q: Can the LCE24A directly replace the LCE24-B in existing designs?

A: Yes. The LCE24A provides identical electrical performance across all critical parameters: 24V reverse standoff voltage, 38.9V clamping voltage, 39A peak pulse current, and 1500W peak pulse power. Both components use the DO-201 axial package format and operate across the same temperature range (-55°C to 175°C). No circuit modifications are required.

Q: What is the primary reason to transition from LCE24-B to LCE24A?

A: The LCE24-B is obsolete, while the LCE24A maintains active product status. This ensures continued availability, supply chain reliability, and manufacturer support for production and maintenance activities.

Q: Are there packaging differences between LCE24-B and LCE24A?

A: Both components use the DO-201 axial package format. The LCE24A is supplied in Cut Tape (CT) packaging, which is standard for automated assembly operations. The physical component dimensions and pin configuration remain identical.

Q: Do compliance certifications differ between these parts?

A: Both components are RoHS compliant. The LCE24A carries ROHS3 compliance designation and includes explicit REACH status confirmation (REACH Unaffected), providing enhanced regulatory documentation for compliance-sensitive applications.

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

A: Substitution compatibility is determined by: reverse standoff voltage (24V), breakdown voltage minimum (26.7V), maximum clamping voltage (38.9V), peak pulse current (39A at 10/1000µs), peak pulse power (1500W), and operating temperature range (-55°C to 175°C). All these parameters must match for direct substitution.

Q: Is the LCE24A suitable for telecom applications?

A: The LCE24A is classified for general purpose applications. The original LCE24-B was specified for telecom use. Both components share identical electrical and thermal specifications. Application suitability depends on specific circuit requirements and system-level validation.

Q: What is the moisture sensitivity level for these components?

A: Both the LCE24-B and LCE24A carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. These components do not require special moisture control during storage, handling, or assembly.