LCE6.5-B Equivalent & Substitute Parts

Part Overview

The LCE6.5-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for telecom applications. This component features a 6.5V reverse standoff voltage with an 11.2V maximum clamping voltage and 100A peak pulse current capability in a DO-201 axial package. The LCE6.5-B is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

LCE6.5-B

Littelfuse Inc.In Stock: 902LCE6.5-B Datasheet

Current PartRFQ

LCE6.5A

Littelfuse Inc.In Stock: 1150LCE6.5A Datasheet

DirectRFQ

LCE6.5A-B

Littelfuse Inc.In Stock: 1599LCE6.5A-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LCE6.5-B is determined by electrical and mechanical parameter equivalence within the TVS diode category. The critical parameters governing substitution are:

Electrical Parameters:

• Voltage - Reverse Standoff: 6.5V (Typ)
• Voltage - Clamping (Max) @ Ipp: 11.2V
• Current - Peak Pulse (10/1000µs): 100A
• Power - Peak Pulse: 1500W
• Operating Temperature Range: -55°C to 175°C

Mechanical Parameters:

• Package / Case: DO-201AA, DO-27, Axial
• Unidirectional Channels: 1
• Type: Zener

The substitute parts LCE6.5A and LCE6.5A-B maintain identical electrical specifications and package configuration to the LCE6.5-B. Both substitutes are manufactured by Littelfuse Inc. within the LCE series and are classified as active products, providing long-term availability and design support advantages over the obsolete LCE6.5-B.

Parameter Comparison

Engineering Selection Recommendations

Both LCE6.5A and LCE6.5A-B are direct electrical and mechanical equivalents to the obsolete LCE6.5-B. Selection between the two active substitutes is determined by packaging and procurement requirements:

LCE6.5A (Cut Tape Packaging): This variant is supplied in Cut Tape (CT) format and is suitable for automated assembly processes and component pick-and-place operations. It maintains active product status with ROHS3 compliance and REACH unaffected designation.

LCE6.5A-B (Bulk Packaging): This variant is supplied in bulk format and is appropriate for manual assembly, kit builds, or high-volume procurement scenarios. It also maintains active product status with ROHS3 compliance and REACH unaffected designation.

Both substitutes provide superior long-term availability and design support compared to the obsolete LCE6.5-B. The choice between LCE6.5A and LCE6.5A-B depends solely on assembly methodology and supply chain requirements, as electrical and mechanical performance are identical.

Frequently Asked Questions (FAQ)

Q: Can LCE6.5A or LCE6.5A-B be used as direct replacements for LCE6.5-B in existing designs?

A: Yes. Both LCE6.5A and LCE6.5A-B are direct substitutes for LCE6.5-B. All three parts share identical electrical parameters (6.5V reverse standoff, 11.2V clamping voltage, 100A peak pulse current, 1500W peak power) and mechanical specifications (DO-201 axial package). The primary difference is product status: LCE6.5-B is obsolete, while LCE6.5A and LCE6.5A-B are active products.

Q: What is the difference between LCE6.5A and LCE6.5A-B?

A: The electrical and mechanical specifications are identical between LCE6.5A and LCE6.5A-B. The difference is packaging format: LCE6.5A is supplied in Cut Tape (CT) format for automated assembly, while LCE6.5A-B is supplied in bulk format for manual assembly or high-volume procurement. Both are active products with ROHS3 compliance.

Q: Why is the LCE6.5-B classified as obsolete?

A: The LCE6.5-B is listed as obsolete by Littelfuse Inc. Active equivalent parts (LCE6.5A and LCE6.5A-B) are available and recommended for new designs and ongoing procurement to ensure long-term supply continuity and manufacturer support.

Q: Are there any compliance differences between LCE6.5-B and the substitute parts?

A: The LCE6.5-B is RoHS Compliant, while LCE6.5A and LCE6.5A-B are ROHS3 Compliant, representing a more recent compliance standard. Both substitute parts are REACH unaffected. All three parts share the same ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Q: Can LCE6.5A and LCE6.5A-B be used interchangeably in the same circuit?

A: Yes. LCE6.5A and LCE6.5A-B are electrically and mechanically identical. They differ only in packaging format (Cut Tape versus Bulk). Selection between them depends on assembly process requirements and procurement logistics, not circuit performance.

Q: What is the operating temperature range for these TVS diodes?

A: All three parts (LCE6.5-B, LCE6.5A, and LCE6.5A-B) operate across an identical temperature range of -55°C to 175°C (junction temperature).

Q: Are these parts suitable for telecom applications?

A: The LCE6.5-B is specified for telecom applications. The substitute parts LCE6.5A and LCE6.5A-B are specified for general purpose applications. However, both maintain identical electrical and thermal specifications, making them suitable for the same circuit protection requirements.