3KP160 Equivalent & Substitute Parts

Part Overview

The 3KP160 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This component features a 160V reverse standoff voltage rating and through-hole P600 axial packaging. The 3KP160 is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and procurement continuity.

Substiute Parts

3KP160

Littelfuse Inc.In Stock: 7823KP160 Datasheet

Current PartRFQ

5KP160A

Littelfuse Inc.In Stock: 28775KP160A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3KP160 is determined by the following critical parameters:

• Voltage Rating Match: Reverse standoff voltage of 160V is the primary selection criterion. Substitute parts must maintain the same 160V standoff voltage to ensure circuit protection at the design specification.
• Package Compatibility: The P600 axial through-hole package is mandatory for mechanical and electrical compatibility with existing PCB layouts and component footprints.
• Unidirectional Configuration: Single-channel zener diode topology must be preserved for directional transient suppression.
• Operating Temperature Range: The -55°C to 175°C junction temperature range must be maintained or exceeded.
• Compliance Standards: RoHS3 compliance is required for regulatory alignment.

The 5KP160A qualifies as a direct substitute based on matching all critical parameters while offering enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 5KP160A is the qualified substitute for the obsolete 3KP160. Both components are manufactured by Littelfuse Inc. and maintain identical voltage standoff ratings, package configurations, and operating temperature ranges. The 5KP160A carries active product status, ensuring long-term availability and supply chain continuity.

Both parts meet ROHS3 compliance requirements and are suitable for general-purpose transient voltage suppression applications. The 5KP160A demonstrates improved electrical performance with higher peak pulse current capacity (19.7A versus 11.6A) and greater peak pulse power rating (5000W versus 3000W), while maintaining a lower maximum clamping voltage (259V versus 271.95V).

Frequently Asked Questions (FAQ)

Q: Can the 5KP160A directly replace the 3KP160 in existing designs?

A: Yes. Both components share identical reverse standoff voltage (160V), P600 axial through-hole package, unidirectional zener configuration, and operating temperature range. Direct substitution is electrically and mechanically compatible.

Q: What is the primary reason for substituting the 3KP160?

A: The 3KP160 is classified as obsolete. The 5KP160A is an active product from the same manufacturer, providing assured long-term availability and supply chain support.

Q: Are there differences in electrical performance between these parts?

A: Yes. The 5KP160A offers higher peak pulse current (19.7A versus 11.6A) and greater peak pulse power (5000W versus 3000W). The 5KP160A also exhibits a lower maximum clamping voltage (259V versus 271.95V). These differences represent improved performance characteristics suitable for the same 160V protection application.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 3KP160 and 5KP160A are ROHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited).

Q: Is the packaging identical between these parts?

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