3KP58C Equivalent & Substitute Parts

Part Overview

The 3KP58C is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This component features a 58V reverse standoff voltage rating and 3000W peak pulse power handling capability in a through-hole P600 axial package. The 3KP58C is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

3KP58C

Littelfuse Inc.In Stock: 10703KP58C Datasheet

Current PartRFQ

5KP58CA

LittelfuseIn Stock: 56755KP58CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3KP58C is determined by the following critical parameters that must remain consistent across equivalent components:

Mandatory Matching Parameters:

• Voltage - Reverse Standoff (Typ): 58V
• Package / Case: P600, Axial
• Mounting Type: Through Hole
• Bidirectional Channels: 1
• Type: Zener

Allowable Parameter Variations: Substitute parts may exceed the original specifications in the following parameters without compromising circuit protection function:

• Voltage - Breakdown (Min): May be higher
• Voltage - Clamping (Max) @ Ipp: May be lower (improved clamping performance)
• Current - Peak Pulse (10/1000µs): May be higher (enhanced current handling)
• Power - Peak Pulse: May be higher (increased energy dissipation capability)

The 5KP58CA qualifies as a direct substitute based on identical standoff voltage, package type, and mounting configuration, while offering superior electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 5KP58CA is the primary substitute for the obsolete 3KP58C. Both components are manufactured by Littelfuse and maintain identical voltage protection thresholds (58V reverse standoff) and physical package specifications (P600 axial through-hole). The 5KP58CA is currently in active production status, ensuring long-term availability and supply chain continuity.

The 5KP58CA provides enhanced electrical performance over the original 3KP58C, with increased peak pulse current handling (54.5A versus 32.1A) and higher peak pulse power rating (5000W versus 3000W). The clamping voltage is also improved at 93.6V compared to 98.28V. Both components maintain identical operating temperature ranges and RoHS3 compliance certification.

Selection of the 5KP58CA is appropriate for all applications previously served by the 3KP58C, with the added benefit of superior transient suppression capability and active product status.

Frequently Asked Questions (FAQ)

Q: Can the 5KP58CA directly replace the 3KP58C in existing designs?

A: Yes. Both components share identical reverse standoff voltage (58V), package type (P600 axial), and mounting configuration (through-hole). The 5KP58CA provides equivalent or superior protection performance.

Q: What is the significance of the higher power rating in the 5KP58CA?

A: The 5KP58CA's 5000W peak pulse power rating versus the 3KP58C's 3000W indicates greater energy dissipation capability during transient events. This represents an enhancement that does not compromise compatibility with existing circuit designs.

Q: Are there any compliance or certification differences between these parts?

A: Both the 3KP58C and 5KP58CA maintain ROHS3 compliance and identical operating temperature specifications (-55°C to 175°C). No compliance barriers exist for substitution.

Q: Why is the 3KP58C classified as obsolete?

A: The 3KP58C has been discontinued by Littelfuse. The 5KP58CA represents the active production equivalent, offering improved specifications within the same package and voltage class.

Q: Does the improved clamping voltage of the 5KP58CA affect circuit compatibility?

A: No. The lower clamping voltage (93.6V versus 98.28V) in the 5KP58CA represents improved transient suppression performance. Circuits designed for the 3KP58C will operate safely with the 5KP58CA.

Q: Are there packaging format differences between these components?

A: Both components use the P600 axial through-hole package. No mechanical or mounting modifications are required for substitution.