5KP64A-B Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The 5KP64A-B is a unidirectional Zener-type transient voltage suppressor manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This through-hole P600 axial package component provides 64V reverse standoff voltage with 103V maximum clamping voltage and 49.5A peak pulse current capability at 5000W peak pulse power. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring identical electrical and mechanical performance characteristics.

Substiute Parts

5KP64A-B

Littelfuse Inc.In Stock: 10475KP64A-B Datasheet

Current PartRFQ

5KP64A

Diotec SemiconductorIn Stock: 384715KP64A Datasheet

MFR RecommendedRFQ

5KP64A-TP

Micro Commercial CoIn Stock: 12745KP64A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5KP64A-B are qualified based on strict electrical and mechanical parameter matching within the allowed tolerances for this TVS diode category. The substitution criteria are:

• Voltage - Reverse Standoff (Typ): 64V (exact match required)
• Voltage - Breakdown (Min): 71.1V (exact match required)
• Voltage - Clamping (Max) @ Ipp: 103V (exact match required)
• Power - Peak Pulse: 5000W (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: P600 or R-6 Axial (compatible axial packages)
• Type: Zener, Unidirectional (exact match required)
• Unidirectional Channels: 1 (exact match required)
• Applications: General Purpose (exact match required)

Current - Peak Pulse tolerance: Substitute parts with 49A or higher meet the minimum performance requirement. Peak pulse current of 49A is acceptable as it maintains the 5000W power dissipation capability within the specified voltage parameters.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and are suitable for general-purpose TVS applications with identical electrical performance specifications. Selection between these parts should be based on the following factors:

5KP64A-B (Littelfuse Inc.): Primary choice for applications requiring ROHS3 compliance and REACH unaffected certification. Operating temperature range of -55 to 175°C provides full specification coverage. P600 package is the standard axial form factor.

5KP64A (Diotec Semiconductor): Functionally equivalent with identical voltage and power ratings. Operating temperature minimum of -50°C is acceptable for applications not requiring -55°C operation. RoHS status listed as not applicable and REACH status as vendor undefined; verify compliance requirements with procurement specifications before selection.

5KP64A-TP (Micro Commercial Co): Meets all electrical requirements with ROHS3 compliance and REACH unaffected certification. R-6 package is an alternative axial form factor compatible with P600 footprints in through-hole applications. Peak pulse current not specified in available data; confirm 5000W power rating is maintained in application.

Frequently Asked Questions (FAQ)

Q: Can 5KP64A (Diotec) be used as a direct replacement for 5KP64A-B (Littelfuse)?

A: Yes, from an electrical standpoint. Both parts have identical voltage ratings (64V standoff, 71.1V breakdown, 103V clamping) and 5000W power dissipation. The Diotec part operates at -50°C minimum versus -55°C for Littelfuse. Verify compliance certifications (RoHS and REACH) meet your application requirements before substitution.

Q: What is the difference between P600 and R-6 packages?

A: Both are through-hole axial packages for TVS diodes. P600 is the standard package for the 5KP series. R-6 is an alternative axial form factor. Both are mechanically compatible with standard through-hole PCB layouts. Confirm footprint compatibility with your PCB design before selecting 5KP64A-TP.

Q: Is the 49A peak pulse current of the Diotec part acceptable versus the 49.5A of the Littelfuse part?

A: Yes. Both parts maintain the 5000W peak pulse power rating at the specified voltage parameters. The 0.5A difference does not affect the thermal or electrical performance in general-purpose applications.

Q: Which substitute part should I select for maximum compliance coverage?

A: Both 5KP64A-B (Littelfuse) and 5KP64A-TP (Micro Commercial Co) carry ROHS3 compliance and REACH unaffected certification. Either part meets the highest compliance requirements. The Diotec 5KP64A part has undefined REACH status and non-applicable RoHS designation; confirm these certifications with your compliance requirements.

Q: Are all three parts suitable for the same circuit applications?

A: Yes. All three parts are unidirectional Zener TVS diodes with identical electrical specifications for general-purpose overvoltage protection. They are electrically interchangeable within the specified operating temperature ranges and compliance requirements of your application.