3KP190C Equivalent & Substitute Parts

Part Overview

The 3KP190C is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage protection applications. This component features a 190V reverse standoff voltage with a 325.5V maximum clamping voltage and 9.7A peak pulse current capability in a through-hole P600 axial package. The 3KP190C is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement.

Substiute Parts

3KP190C

Littelfuse Inc.In Stock: 9083KP190C Datasheet

Current PartRFQ

5KP190CA

Littelfuse Inc.In Stock: 24035KP190CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3KP190C is determined by the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff: Must match at 190V to maintain circuit protection threshold
• Package / Case: Must remain P600 axial through-hole for mechanical compatibility
• Bidirectional Channels: Must be 1 channel to match functional configuration
• Operating Temperature Range: Must support -55°C to 175°C minimum
• RoHS Compliance: Must maintain ROHS3 compliance for regulatory alignment

The 5KP190CA qualifies as a direct substitute based on matching reverse standoff voltage (190V), identical package type (P600 axial), single bidirectional channel, equivalent operating temperature range, and ROHS3 compliance. The 5KP190CA is an active product with enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 5KP190CA is the qualified substitute for the obsolete 3KP190C. Both components are manufactured by Littelfuse Inc. and maintain identical reverse standoff voltage (190V) and package configuration (P600 axial through-hole). The 5KP190CA holds active product status, ensuring ongoing availability and supply chain continuity.

The 5KP190CA demonstrates improved electrical performance with higher peak pulse current (16.5A versus 9.7A) and greater peak pulse power (5000W versus 3000W). The clamping voltage is lower (310V versus 325.5V), providing enhanced transient suppression. Both components maintain equivalent operating temperature ranges and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the 5KP190CA directly replace the 3KP190C in existing designs?

A: Yes. Both components share identical reverse standoff voltage (190V), package type (P600 axial), and operating temperature range (-55°C to 175°C). The 5KP190CA is pin-compatible and functionally equivalent for through-hole mounting applications.

Q: What are the key differences between these two parts?

A: The 5KP190CA offers enhanced performance with higher peak pulse current (16.5A versus 9.7A) and greater power dissipation capability (5000W versus 3000W). The clamping voltage is slightly lower at 310V compared to 325.5V. The 5KP190CA is an active product, while the 3KP190C is obsolete.

Q: Are both parts RoHS compliant?

A: Yes. Both the 3KP190C and 5KP190CA are ROHS3 compliant, meeting regulatory requirements for hazardous substance restrictions.

Q: Does the P600 axial package remain the same for both parts?

A: Yes. Both components use the P600 axial through-hole package, ensuring mechanical compatibility with existing PCB layouts and footprints.

Q: Why is the 3KP190C obsolete?

A: The 3KP190C has been discontinued by Littelfuse Inc. The 5KP190CA represents the current active alternative with equivalent core specifications and improved performance characteristics.