5KP6.5A-B Equivalent & Substitute Parts

Part Overview

The 5KP6.5A-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This through-hole component features a 6.5V reverse standoff voltage and 11.2V maximum clamping voltage, with peak pulse power handling of 5000W. The part is currently active in production and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges for this TVS diode category.

Substiute Parts

5KP6.5A-B

Littelfuse Inc.In Stock: 8275KP6.5A-B Datasheet

Current PartRFQ

5KP6.5A

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

MFR RecommendedRFQ

P6KE6.8A

HY Electronic (Cayman) LimitedIn Stock: 20314P6KE6.8A Datasheet

MFR RecommendedRFQ

P6KE6V8A

Fairchild SemiconductorIn Stock: 19234P6KE6V8A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for TVS diodes is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): Must match or be within acceptable tolerance of the original specification to ensure proper circuit protection threshold
• Voltage - Clamping (Max) @ Ipp: Must not exceed the original value to prevent overvoltage stress on protected components
• Current - Peak Pulse: Must meet or exceed the original specification to handle transient events
• Power - Peak Pulse: Must meet or exceed the original specification for thermal performance
• Mounting Type & Package: Must be compatible with existing PCB layouts (through-hole axial packages)
• Operating Temperature Range: Must encompass the application environment
• RoHS & Compliance Status: Must maintain regulatory compliance requirements

The identified substitutes are grouped based on voltage class alignment and peak power handling capability within the 5KP and P6KE series families.

Parameter Comparison

Engineering Selection Recommendations

5KP6.5A (Littelfuse Inc.): This is the manufacturer-recommended direct substitute. It maintains identical electrical specifications (6.5V standoff, 11.2V clamping, 455.4A peak pulse, 5000W power) and mechanical compatibility (P600 axial package). The only difference is packaging format (Tape & Reel vs. Bulk). Both are ROHS3 compliant and active products. This substitute is suitable for direct replacement in all applications.

P6KE6.8A (HY Electronic): This substitute operates in a lower voltage class (5.8V standoff vs. 6.5V) and significantly reduced power handling (600W vs. 5000W, 57A vs. 455.4A). While it maintains through-hole axial mounting and ROHS3 compliance, the reduced electrical performance limits its application to lower-energy transient environments. Operating temperature range is reduced to -55 to 150°C.

P6KE6V8A (Fairchild Semiconductor): This substitute operates in the same lower voltage class (5.8V standoff) with reduced power handling (600W vs. 5000W). Peak pulse current is 298A (8/20µs waveform), which is substantially lower than the 455.4A specification. The clamping voltage is higher at 13.4V. Operating temperature and RoHS compliance status are not specified in available data. This part is suitable only for applications with reduced transient energy requirements.

Frequently Asked Questions (FAQ)

Q: Can 5KP6.5A replace 5KP6.5A-B directly?

A: Yes. Both parts are identical in electrical specifications and mechanical form factor. The difference is packaging: 5KP6.5A-B is supplied in Bulk, while 5KP6.5A is supplied in Tape & Reel format. Both are ROHS3 compliant and active products from Littelfuse Inc.

Q: What is the key difference between 5KP and P6KE series substitutes?

A: The 5KP series (5KP6.5A) is rated for 5000W peak pulse power with 455.4A peak current. The P6KE series alternatives (P6KE6.8A, P6KE6V8A) are rated for 600W peak pulse power with significantly lower peak currents (57A and 298A respectively). Selection depends on the transient energy level in the application.

Q: Are P6KE6.8A and P6KE6V8A interchangeable with 5KP6.5A-B?

A: No. While both P6KE variants maintain through-hole axial mounting and general-purpose TVS functionality, they operate in a lower voltage class (5.8V standoff vs. 6.5V) and have substantially reduced power handling capability (600W vs. 5000W). These parts are suitable only for applications with lower transient energy requirements and lower voltage protection thresholds.

Q: What packaging considerations apply to these substitutes?

A: All identified substitutes use through-hole axial mounting. The 5KP6.5A uses P600 package, while P6KE variants use DO-204AC/DO-15 package. Physical dimensions differ between these packages; verify PCB layout compatibility before substitution.

Q: Are all substitutes ROHS3 compliant?

A: The 5KP6.5A and P6KE6.8A are confirmed ROHS3 compliant. The P6KE6V8A RoHS status is not specified in available data. Verify compliance requirements for your application before selection.

Q: What is the operating temperature range for each substitute?

A: 5KP6.5A-B and 5KP6.5A: -55 to 175°C. P6KE6.8A: -55 to 150°C. P6KE6V8A: Not specified. Confirm temperature range compatibility with your application environment.