3KP58-B Equivalent & Substitute Parts

Part Overview

The 3KP58-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., rated for 58V reverse standoff voltage with a 98.28V maximum clamping voltage and 32.1A peak pulse current. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The 3KP58-B operates across the temperature range of -55°C to 175°C and is housed in a P600 axial through-hole package, compliant with ROHS3 standards.

Substiute Parts

3KP58-B

Littelfuse Inc.In Stock: 9163KP58-B Datasheet

Current PartRFQ

5KP58A-B

Littelfuse Inc.In Stock: 9455KP58A-B Datasheet

DirectRFQ

15KPA58AE3/TR13

Microchip TechnologyIn Stock: 73715KPA58AE3/TR13 Datasheet

MFR RecommendedRFQ

3KP58A-TP

Micro Commercial CoIn Stock: 9533KP58A-TP Datasheet

MFR RecommendedRFQ

5KP58A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 46865KP58A-E3/54 Datasheet

MFR RecommendedRFQ

5KP58A-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 43365KP58A-E3/73 Datasheet

MFR RecommendedRFQ

5KP58AHE3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 12155KP58AHE3/54 Datasheet

MFR RecommendedRFQ

5KP58AHE3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 11345KP58AHE3/73 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3KP58-B is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 58V
• Voltage - Clamping (Max) @ Ipp: Must be within acceptable operating range (93.6V to 98.28V)
• Current - Peak Pulse (10/1000µs): Minimum 32.1A
• Power - Peak Pulse: Minimum 3000W
• Operating Temperature Range: -55°C to 175°C
• Package / Case: P600, Axial (through-hole mounting)
• Type: Zener, Unidirectional

All substitute parts listed maintain the 58V reverse standoff voltage specification and P600 axial package configuration. Substitutes are grouped by power rating and current handling capability, with higher-rated alternatives providing enhanced transient suppression performance while maintaining electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Same Power Rating): The 3KP58A-TP from Micro Commercial Co provides electrical equivalence with identical 32.1A peak pulse current and 3000W power rating. This part maintains the same performance envelope as the 3KP58-B while offering active product status and availability.

Enhanced Performance Alternatives (Higher Power Rating): The 5KP58A-B, 5KP58A-E3/54, 5KP58A-E3/73, 5KP58AHE3/54, and 5KP58AHE3/73 all deliver 5000W peak pulse power with 53.4A to 54.5A peak pulse current. These parts provide superior transient suppression capability while maintaining the 58V reverse standoff voltage and P600 axial package. All are ROHS3 compliant and active products.

High-Performance Alternative: The 15KPA58AE3/TR13 from Microchip Technology offers the highest performance specification with 161A peak pulse current and 15000W peak pulse power. This part is suitable for applications requiring maximum transient protection and is supplied in tape and reel packaging.

Automotive Applications: The 5KP58AHE3/54 and 5KP58AHE3/73 from Vishay General Semiconductor are qualified to AEC-Q101 automotive standards, making them suitable for automotive and harsh environment applications requiring enhanced reliability certification.

Package Consideration: The 3KP58A-TP uses an R-6 axial package instead of the standard P600. Verify PCB footprint compatibility before selection if package geometry is critical to your design.

Frequently Asked Questions (FAQ)

Q: Can I use a 5KP58A-B as a direct replacement for the 3KP58-B? A: Yes. The 5KP58A-B maintains the 58V reverse standoff voltage and P600 axial package. It provides higher peak pulse current (54.5A vs. 32.1A) and power rating (5000W vs. 3000W), making it electrically compatible and functionally superior for the same application.

Q: What is the difference between the 5KP58A-E3/54 and 5KP58AHE3/54? A: Both parts are electrically identical with 58V reverse standoff, 94V clamping voltage, and 53.4A peak pulse current. The 5KP58AHE3/54 carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications requiring enhanced reliability certification.

Q: Why does the 15KPA58AE3/TR13 have a much higher current rating? A: The 15KPA58AE3/TR13 is designed for high-energy transient suppression applications requiring 161A peak pulse current and 15000W power dissipation. It is suitable for power line protection and industrial applications with severe transient conditions, while maintaining the same 58V reverse standoff voltage.

Q: Is the 3KP58A-TP a suitable replacement despite the different package designation? A: The 3KP58A-TP is electrically equivalent with identical 32.1A peak pulse current and 3000W power rating. However, it uses an R-6 axial package instead of P600. Verify that your PCB footprint accommodates the R-6 package geometry before selection.

Q: Are all substitute parts ROHS3 compliant? A: All listed substitutes except 3KP58A-TP are explicitly specified as ROHS3 compliant. The 3KP58A-TP compliance status is not specified in available documentation. Confirm ROHS3 compliance with the manufacturer if regulatory compliance is required for your application.

Q: Can I use the 15KPA58AE3/TR13 in a circuit designed for the 3KP58-B? A: Yes. The 15KPA58AE3/TR13 maintains the 58V reverse standoff voltage and P600 axial package, making it electrically compatible. The higher current and power ratings provide enhanced transient suppression without compromising circuit functionality.