Equivalent & Substitute Parts for 3KP58CA-B TVS Diode

Part Overview

The 3KP58CA-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage protection applications. This bidirectional Zener diode features a 58V reverse standoff voltage and 93.6V maximum clamping voltage with 32.1A peak pulse current capability. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

3KP58CA-B

Littelfuse Inc.In Stock: 8103KP58CA-B Datasheet

Current PartRFQ

5KP58CA-B

Littelfuse Inc.In Stock: 7295KP58CA-B Datasheet

DirectRFQ

3KP58CA-TP

Micro Commercial CoIn Stock: 9213KP58CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3KP58CA-B are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Reverse standoff voltage: 58V
• Breakdown voltage minimum: 64.4V
• Clamping voltage maximum: 93.6V
• Bidirectional channel configuration: 1 channel
• Operating temperature range: -55°C to 175°C
• Mounting type: Through hole
• Package case: Axial configuration

Substitution Categories:

Direct Electrical Equivalent (Higher Power Rating): The 5KP58CA-B maintains identical voltage specifications (58V standoff, 93.6V clamp) with increased current handling (54.5A vs. 32.1A) and power dissipation (5000W vs. 3000W). This part is pin-compatible and functionally interchangeable for applications requiring higher transient energy absorption.

Manufacturer Alternative (Same Electrical Specifications): The 3KP58CA-TP, manufactured by Micro Commercial Co, provides identical electrical performance (58V standoff, 93.6V clamp, 32.1A peak current, 3000W power) with package variation (R-6 axial vs. P600 axial). This part addresses obsolescence while maintaining electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): The 5KP58CA-B is the primary substitute, offering active product status from the original manufacturer (Littelfuse Inc.) with identical voltage specifications and P600 package compatibility. The increased current rating (54.5A) and power dissipation (5000W) provide enhanced transient protection margin without circuit modification.

For Alternative Sourcing: The 3KP58CA-TP from Micro Commercial Co maintains exact electrical equivalence with the original part (58V standoff, 93.6V clamp, 32.1A current, 3000W power) and active product status. Package variation (R-6 vs. P600) requires PCB footprint verification but does not affect electrical performance.

Compliance Considerations: Both Littelfuse substitutes carry ROHS3 compliance certification. The 5KP58CA-B includes REACH Unaffected status. All parts are classified under ECCN EAR99 and HTSUS 8541.10.0080.

Frequently Asked Questions (FAQ)

Q: Can the 5KP58CA-B directly replace the 3KP58CA-B?

A: Yes. Both parts share identical voltage specifications (58V standoff, 93.6V clamp) and P600 axial package configuration. The 5KP58CA-B provides higher current handling (54.5A vs. 32.1A) and power dissipation (5000W vs. 3000W), making it a direct upgrade with no circuit modifications required.

Q: What is the difference between the 3KP58CA-TP and the original 3KP58CA-B?

A: Electrical specifications are identical (58V standoff, 93.6V clamp, 32.1A current, 3000W power). The primary difference is manufacturer (Micro Commercial Co vs. Littelfuse Inc.) and package designation (R-6 vs. P600 axial). Both are through-hole axial configurations requiring PCB footprint compatibility verification.

Q: Are all three parts pin-compatible?

A: Yes. All three parts are bidirectional Zener diodes in through-hole axial packages with identical electrical polarity and lead spacing. Package designations (P600 and R-6) refer to physical dimensions; verify PCB footprint compatibility before substitution.

Q: Why is the 3KP58CA-B listed as obsolete?

A: Obsolescence status indicates the part is no longer in active production by Littelfuse Inc. The 5KP58CA-B and 3KP58CA-TP are active alternatives providing equivalent or superior performance.

Q: Which substitute should be selected for new designs?

A: The 5KP58CA-B is recommended for new designs, offering active product status from the original manufacturer with enhanced performance specifications and ROHS3 compliance.