3KP64C Equivalent & Substitute Parts

Part Overview

The 3KP64C is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. It features a 64V reverse standoff voltage rating with a 3000W peak pulse power rating and through-hole P600 axial packaging. The 3KP64C is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement continuity.

Substiute Parts

3KP64C

Littelfuse Inc.In Stock: 10013KP64C Datasheet

Current PartRFQ

5KP64CA

Littelfuse Inc.In Stock: 27965KP64CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3KP64C is determined by the following critical parameters that must remain consistent or be superior:

• Voltage - Reverse Standoff (Typ): 64V (exact match required)
• Bidirectional Channels: 1 (single channel configuration)
• Package / Case: P600, Axial (mechanical and electrical compatibility)
• Mounting Type: Through Hole (board-level integration requirement)
• Operating Temperature Range: -55°C ~ 175°C (thermal envelope)
• RoHS Compliance: ROHS3 Compliant (regulatory requirement)

The 5KP64CA qualifies as a direct substitute because it maintains identical voltage ratings, package configuration, and thermal specifications while offering enhanced performance characteristics in peak pulse current and power dissipation capacity.

Parameter Comparison

Engineering Selection Recommendations

The 5KP64CA is the qualified substitute for the obsolete 3KP64C. Both components are manufactured by Littelfuse Inc. and maintain identical voltage standoff and clamping specifications within the same P600 axial package. The 5KP64CA is currently in active production status, ensuring long-term availability and supply chain continuity.

The 5KP64CA provides superior transient suppression capability with 49.5A peak pulse current capacity compared to the 3KP64C's 29.1A, and 5000W peak pulse power versus 3000W. These enhanced ratings provide additional margin for transient event protection while maintaining full electrical and mechanical compatibility. Both components meet ROHS3 compliance requirements and operate across the identical -55°C to 175°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can the 5KP64CA be used as a direct replacement for the 3KP64C in existing designs?

A: Yes. The 5KP64CA maintains identical voltage ratings (64V reverse standoff), package configuration (P600 axial), and thermal operating range (-55°C ~ 175°C). The enhanced current and power ratings of the 5KP64CA provide superior performance without requiring circuit redesign.

Q: What is the primary difference between the 3KP64C and 5KP64CA?

A: The primary differences are product status and performance capacity. The 3KP64C is obsolete, while the 5KP64CA is active production. The 5KP64CA offers 49.5A peak pulse current and 5000W power dissipation compared to the 3KP64C's 29.1A and 3000W respectively.

Q: Are both parts available in the same package?

A: Yes. Both the 3KP64C and 5KP64CA use the P600 axial through-hole package, ensuring mechanical and board-level compatibility without modification.

Q: Do both parts meet the same compliance standards?

A: Yes. Both components are ROHS3 compliant with MSL rating of 1 (Unlimited) and carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Q: What is the voltage clamping difference between these parts?

A: The 3KP64C clamps at 108.15V maximum, while the 5KP64CA clamps at 103V maximum. The lower clamping voltage of the 5KP64CA provides slightly tighter voltage regulation during transient events.