3KP200 Equivalent & Substitute Parts

Part Overview

The 3KP200 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. It features a 200V reverse standoff voltage with a 345.66V maximum clamping voltage and 9.1A peak pulse current capability in a through-hole P600 axial package. The 3KP200 is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement.

Substiute Parts

3KP200

Littelfuse Inc.In Stock: 9873KP200 Datasheet

Current PartRFQ

5KP200A

Littelfuse Inc.In Stock: 38115KP200A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3KP200 is determined by the following critical parameters:

• Voltage Rating Match: Reverse standoff voltage of 200V and breakdown voltage minimum of 210.6V
• Package Compatibility: P600 axial through-hole package for direct mechanical and electrical fit
• Thermal Performance: Operating temperature range of -55°C to 175°C
• Regulatory Compliance: RoHS3 compliance and EAR99 classification

The 5KP200A qualifies as a direct substitute based on matching reverse standoff voltage (200V), identical package type (P600 axial), equivalent operating temperature range, and shared regulatory certifications. The 5KP200A is an active product with enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 5KP200A is the qualified substitute for the obsolete 3KP200. Both components maintain identical reverse standoff voltage (200V) and package configuration (P600 axial through-hole), ensuring direct mechanical and electrical compatibility in existing circuit designs.

The 5KP200A is an active product with current manufacturing support and availability, addressing the obsolescence status of the 3KP200. Both components meet RoHS3 compliance requirements and carry identical export classification (EAR99), supporting regulatory and supply chain continuity.

The 5KP200A demonstrates enhanced electrical performance with higher peak pulse current (15.5A versus 9.1A) and greater peak pulse power dissipation (5000W versus 3000W). The clamping voltage is lower (329.2V versus 345.66V), providing improved transient suppression characteristics. These performance enhancements make the 5KP200A suitable for applications requiring the same voltage protection level with superior energy handling capability.

Frequently Asked Questions (FAQ)

Q: Can the 5KP200A be used as a direct replacement for the 3KP200 in existing designs?

A: Yes. Both components share identical reverse standoff voltage (200V), breakdown voltage specifications within compatible ranges, and P600 axial through-hole package configuration. Direct substitution is supported without circuit modification.

Q: What are the key differences between the 3KP200 and 5KP200A?

A: The primary differences are product status and electrical performance. The 3KP200 is obsolete; the 5KP200A is active. The 5KP200A provides higher peak pulse current (15.5A versus 9.1A), greater peak pulse power (5000W versus 3000W), and lower clamping voltage (329.2V versus 345.66V).

Q: Are there any thermal or environmental limitations when substituting the 5KP200A?

A: No. Both components operate across the identical temperature range (-55°C to 175°C junction temperature) and share MSL 1 (unlimited) moisture sensitivity classification.

Q: Does the 5KP200A meet the same regulatory requirements as the 3KP200?

A: Yes. Both components are RoHS3 compliant, carry EAR99 export classification, and share identical HTSUS commodity code (8541.10.0080).

Q: Why is the clamping voltage lower on the 5KP200A if it has higher power rating?

A: Lower clamping voltage indicates more effective transient suppression at the specified current level. The 5KP200A's enhanced design provides superior voltage regulation while handling greater peak pulse energy, representing an improvement over the 3KP200 architecture.