3KP30C Equivalent & Substitute Parts

Part Overview

The 3KP30C is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This component features a 30V reverse standoff voltage rating and 3000W peak pulse power handling capability in a through-hole P600 axial package. The product is currently classified as obsolete, making identification of functionally equivalent active alternatives essential for ongoing design support and procurement continuity.

Substiute Parts

3KP30C

Littelfuse Inc.In Stock: 11563KP30C Datasheet

Current PartRFQ

5KP30CA

Diotec SemiconductorIn Stock: 41935KP30CA Datasheet

DirectRFQ

5KP30CA-TP

Micro Commercial CoIn Stock: 340395KP30CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3KP30C is determined by the following critical parameters:

• Voltage Rating Match: Reverse standoff voltage of 30V (±tolerance within acceptable operating margin)
• Package Compatibility: Through-hole axial configuration (P600 or equivalent R-6 package)
• Bidirectional Channel Configuration: Single bidirectional channel
• Power Handling Capability: Peak pulse power rating of 3000W or greater
• Compliance Requirements: ROHS3 compliance and EAR99 classification

The identified substitute parts meet these criteria while offering improved or equivalent electrical performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

5KP30CA (Diotec Semiconductor): This substitute maintains identical voltage ratings while providing enhanced power dissipation capability (5000W versus 3000W) and higher peak pulse current handling (103A versus 62A). The component is in active production status with ROHS3 compliance and standard P600 axial package compatibility. This option is suitable for direct replacement in applications where the original 3KP30C specifications are met or exceeded.

5KP30CA-TP (Micro Commercial Co): This manufacturer-recommended alternative offers equivalent voltage performance with 5000W peak pulse power rating. The component maintains ROHS3 compliance and operates across the full temperature range (-55°C ~ 175°C) matching the original specification. The R-6 axial package is mechanically compatible with P600 footprints in through-hole applications. This option provides the highest inventory availability (33,943 units) and active product status.

Both substitutes are ROHS3 compliant and EAR99 classified, maintaining regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can the 5KP30CA and 5KP30CA-TP be used interchangeably with the 3KP30C?

A: Both parts meet the core substitution criteria: 30V reverse standoff voltage, through-hole axial mounting, bidirectional configuration, and ROHS3 compliance. The primary difference is package designation (P600 versus R-6), which are mechanically compatible in standard through-hole PCB applications. Electrical performance is equivalent or superior.

Q: What is the significance of the higher power rating (5000W) in the substitute parts?

A: The substitute parts (5KP30CA and 5KP30CA-TP) provide 5000W peak pulse power handling compared to the original 3000W specification. This represents improved transient suppression capability and does not create compatibility issues in applications designed for the 3KP30C, as the substitute will perform the protection function with greater margin.

Q: Are there temperature range differences between the options?

A: The 3KP30C and 5KP30CA-TP both operate from -55°C to 175°C. The 5KP30CA operates from -50°C to 175°C, representing a 5°C reduction in minimum operating temperature. For applications requiring full -55°C operation, the 5KP30CA-TP is the preferred selection.

Q: What does the "-TP" designation in 5KP30CA-TP indicate?

A: The "-TP" suffix indicates Cut Tape (CT) packaging format from Micro Commercial Co. This is a standard tape-and-reel packaging option suitable for automated assembly processes. The electrical specifications remain identical to the standard 5KP30CA variant.

Q: Is the R-6 package equivalent to the P600 package for PCB mounting?

A: Both R-6 and P600 are axial through-hole package designations for diodes. They are mechanically compatible in standard through-hole PCB applications with equivalent lead spacing and mounting characteristics.