LCE6.5A-B Equivalent & Substitute Parts

Part Overview

The LCE6.5A-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This through-hole component operates across a wide temperature range and meets ROHS3 compliance requirements. The part is currently in active production status with 1554 units available in bulk packaging. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when application requirements necessitate different electrical or packaging specifications.

Substiute Parts

LCE6.5A-B

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

Current PartRFQ

5KP6.5A

Littelfuse Inc.In Stock: 26955KP6.5A Datasheet

MFR RecommendedRFQ

LCE6.5A

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LCE6.5A-B are qualified based on the following critical parameters that determine functional equivalence:

Electrical Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 6.5V
• Voltage - Breakdown (Min): 7.22V
• Voltage - Clamping (Max) @ Ipp: 11.2V
• Unidirectional Channels: 1
• Type: Zener

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: Axial configuration

Compliance & Status Criteria:

• Product Status: Active
• RoHS Status: ROHS3 Compliant

The identified substitutes maintain identical voltage protection characteristics and through-hole axial mounting compatibility. Differences in peak pulse current capacity and power dissipation ratings reflect variations in package form factor and thermal design, which do not affect the core voltage regulation function for general-purpose applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—LCE6.5A-B, 5KP6.5A, and LCE6.5A—are manufactured by Littelfuse Inc. and maintain active production status. Each part carries ROHS3 compliance certification and meets REACH unaffected status requirements.

LCE6.5A-B (Bulk Packaging): Primary selection for standard procurement. Bulk packaging format suits high-volume manufacturing environments. Electrical and thermal specifications are identical to LCE6.5A.

LCE6.5A (Cut Tape Packaging): Direct electrical equivalent with identical peak pulse current (100A) and power dissipation (1500W). Differs only in packaging format (Cut Tape vs. Bulk), making it suitable for automated assembly processes or lower-volume applications requiring tape-and-reel or cut-tape delivery.

5KP6.5A (P600 Package): Maintains identical voltage regulation characteristics (6.5V standoff, 11.2V clamp) but features enhanced current handling (455.4A peak pulse) and power dissipation (5000W). The P600 package form factor accommodates higher transient energy absorption. Selection of this substitute is appropriate when application requirements demand increased surge capacity within the same voltage class.

Frequently Asked Questions (FAQ)

Q: Can LCE6.5A-B be directly replaced with LCE6.5A?

A: Yes. Both parts are electrically identical with matching voltage ratings (6.5V standoff, 11.2V clamp), peak pulse current (100A), and power dissipation (1500W). The difference is packaging format: LCE6.5A-B is supplied in bulk, while LCE6.5A is supplied in cut tape. Both use DO-201AA/DO-27 axial packages and are suitable for through-hole mounting.

Q: When should 5KP6.5A be selected instead of LCE6.5A-B?

A: The 5KP6.5A substitute is selected when the application requires higher transient energy absorption. It maintains the same voltage protection characteristics (6.5V standoff, 11.2V clamp) but provides 455.4A peak pulse current and 5000W power dissipation compared to 100A and 1500W for LCE6.5A-B. The P600 package accommodates this increased thermal capacity. Selection depends on the magnitude of transient overvoltage events expected in the circuit.

Q: Are all three parts compatible with the same PCB footprint?

A: LCE6.5A-B and LCE6.5A share identical DO-201AA/DO-27 axial package dimensions and are footprint-compatible. The 5KP6.5A uses a P600 axial package, which has different physical dimensions. PCB layout verification is required before substituting 5KP6.5A for either LCE6.5A variant.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. LCE6.5A-B, LCE6.5A, and 5KP6.5A are all ROHS3 compliant, REACH unaffected, and carry EAR99 ECCN classification. All three parts are manufactured by Littelfuse Inc. and maintain active product status.

Q: What is the significance of the different packaging formats?

A: Bulk packaging (LCE6.5A-B) is standard for high-volume manufacturing with manual or semi-automated assembly. Cut tape packaging (LCE6.5A) is optimized for automated pick-and-place assembly systems. Tape & Reel packaging (5KP6.5A) is also suitable for automated assembly. Selection depends on manufacturing process requirements and assembly equipment capabilities.

Q: Can these parts be used interchangeably in all 6.5V TVS applications?

A: Electrical interchangeability is confirmed for voltage regulation function. However, circuit design must account for differences in peak pulse current handling and power dissipation. Applications with high-energy transient events may require the 5KP6.5A for adequate protection margin. PCB layout and thermal management considerations apply when substituting between different package types.