LCE7.0-B Equivalent & Substitute Parts

Part Overview

The LCE7.0-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for telecom applications. This component features a 7V reverse standoff voltage with a 12V maximum clamping voltage and 100A peak pulse current capability in a DO-201 axial package. The LCE7.0-B is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing system support and new design implementations. The part is RoHS compliant and rated for operating temperatures from -55°C to 175°C.

Substiute Parts

LCE7.0-B

Littelfuse Inc.In Stock: 1074LCE7.0-B Datasheet

Current PartRFQ

LCE7.0A

Littelfuse Inc.In Stock: 1461LCE7.0A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LCE7.0-B is determined by strict equivalence across the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 7V
• Voltage - Clamping (Max) @ Ipp: 12V
• Current - Peak Pulse (10/1000µs): 100A
• Power - Peak Pulse: 1500W
• Package / Case: DO-201AA, DO-27, Axial
• Type: Zener, Unidirectional (1 channel)
• Operating Temperature Range: -55°C to 175°C

The LCE7.0-A is a direct equivalent substitute manufactured by Littelfuse Inc. within the same LCE series. This part maintains identical electrical specifications and package configuration while offering active product status and improved availability. The LCE7.0-A differs only in packaging format (Cut Tape versus bulk) and application classification (General Purpose versus Telecom-specific), with no impact on electrical performance or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The LCE7.0-A is the primary substitute for the obsolete LCE7.0-B. Both components are manufactured by Littelfuse Inc. and provide identical electrical performance and mechanical compatibility. The LCE7.0-A offers the advantage of active product status, ensuring continued availability and manufacturing support. Both parts maintain RoHS compliance (LCE7.0-B: RoHS Compliant; LCE7.0-A: ROHS3 Compliant) and are rated for the same operating temperature range of -55°C to 175°C.

For applications requiring the LCE7.0-B, the LCE7.0-A provides a direct replacement without circuit redesign or performance degradation. The packaging difference (Cut Tape for LCE7.0-A versus standard packaging for LCE7.0-B) does not affect electrical or mechanical function in the application. The LCE7.0-A's active status and higher inventory availability make it the recommended choice for new designs and ongoing system support.

Frequently Asked Questions (FAQ)

Q: Can the LCE7.0-A directly replace the LCE7.0-B in existing applications?

A: Yes. The LCE7.0-A provides identical electrical specifications, including 7V reverse standoff voltage, 12V clamping voltage, and 100A peak pulse current. Both components use the DO-201 axial package and operate across the same temperature range (-55°C to 175°C). No circuit modifications are required.

Q: What is the difference between the LCE7.0-B and LCE7.0-A?

A: The primary differences are product status and packaging format. The LCE7.0-B is obsolete, while the LCE7.0-A is active. The LCE7.0-A is supplied in Cut Tape packaging, whereas the LCE7.0-B uses standard packaging. Electrical performance and mechanical compatibility are identical.

Q: Are both parts RoHS compliant?

A: Yes. The LCE7.0-B is RoHS Compliant, and the LCE7.0-A is ROHS3 Compliant. Both meet environmental and regulatory requirements for lead-free manufacturing.

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

A: Both the LCE7.0-B and LCE7.0-A have a Moisture Sensitivity Level (MSL) of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can these TVS diodes be used in power line protection applications?

A: No. Both the LCE7.0-B and LCE7.0-A are classified as non-power-line-protection devices. They are suitable for telecom and general-purpose transient voltage suppression applications.

Q: What is the peak pulse power rating?

A: Both components are rated for 1500W (1.5kW) peak pulse power with a 10/1000µs pulse duration, providing robust protection against transient voltage events.