5KP58-B Equivalent & Substitute Parts

Part Overview

The 5KP58-B is a unidirectional 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 5000W peak pulse power handling capability in a through-hole P600 axial package. The 5KP58-B is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Active alternatives from Littelfuse and other manufacturers provide functionally compatible solutions with comparable electrical characteristics.

Substiute Parts

5KP58-B

Littelfuse Inc.In Stock: 8495KP58-B Datasheet

Current PartRFQ

5KP58A

LittelfuseIn Stock: 44115KP58A Datasheet

DirectRFQ

5KP58A-B

Littelfuse Inc.In Stock: 9455KP58A-B Datasheet

DirectRFQ

5KP58A-E3/54

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

MFR RecommendedRFQ

5KP58E3/TR13

Microchip TechnologyIn Stock: 9835KP58E3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5KP58-B is determined by strict alignment of the following electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): Must be 58V
• Unidirectional Channels: Must be 1
• Power - Peak Pulse: Must be 5000W (5kW)
• Mounting Type: Must be Through Hole
• Package / Case: Must be P600, Axial
• Operating Temperature Range: Must support -55°C ~ 175°C (TJ)

Substitute parts are qualified when all parameters above match the main part specification. Variations in voltage clamping characteristics, peak pulse current, and breakdown voltage within the same voltage class are acceptable provided the core electrical rating and physical form factor remain identical.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts meet the core electrical and mechanical requirements for direct replacement of the 5KP58-B. Selection among active alternatives should be based on the following criteria:

Littelfuse 5KP58A and 5KP58A-B: These parts are manufactured by the original equipment manufacturer and maintain full compatibility with the obsolete 5KP58-B. Both are ROHS3 compliant and REACH unaffected. The 5KP58A is available in Cut Tape packaging, while 5KP58A-B is supplied in Bulk packaging. Both feature identical electrical specifications with 93.6V clamping voltage and 54.5A peak pulse current.

Vishay 5KP58A-E3/54: This manufacturer-recommended alternative from Vishay General Semiconductor provides equivalent performance with 94V clamping voltage and 53.4A peak pulse current. The part is ROHS3 compliant and REACH unaffected, supplied in Cut Tape packaging. This option is suitable for applications requiring cross-manufacturer qualification.

Microchip 5KP58E3/TR13: This manufacturer-recommended alternative from Microchip Technology is ROHS3 compliant and REACH unaffected, supplied in Tape & Reel packaging. The part exhibits 103V clamping voltage and 48.5A peak pulse current, representing the highest clamping voltage among available substitutes. This option is appropriate for high-volume production environments utilizing automated assembly processes.

All substitute parts maintain identical reverse standoff voltage (58V), power rating (5000W), operating temperature range (-55°C to 175°C), and physical form factor (P600 axial through-hole package).

Frequently Asked Questions (FAQ)

Q: Can the 5KP58A directly replace the obsolete 5KP58-B?

A: Yes. The 5KP58A meets all core substitution criteria: identical 58V reverse standoff voltage, 5000W peak pulse power rating, through-hole P600 axial package, and -55°C to 175°C operating temperature range. Both are manufactured by Littelfuse and are ROHS3 compliant.

Q: What is the difference between 5KP58A and 5KP58A-B?

A: Both parts are electrically identical with 58V standoff voltage, 93.6V clamping voltage, and 54.5A peak pulse current. The primary difference is packaging: 5KP58A is supplied in Cut Tape (CT), while 5KP58A-B is supplied in Bulk. Selection depends on procurement and assembly requirements.

Q: Are cross-manufacturer substitutes acceptable?

A: Yes. The Vishay 5KP58A-E3/54 and Microchip 5KP58E3/TR13 are manufacturer-recommended alternatives that meet all electrical and mechanical substitution criteria. Cross-manufacturer qualification may be required depending on application-specific reliability or supply chain requirements.

Q: How do clamping voltage variations affect substitution?

A: All substitute parts maintain the same 58V reverse standoff voltage and 5000W power rating. Clamping voltage variations (93.6V to 103V) are within acceptable tolerance for the 5KP58 voltage class and do not prevent substitution. The specific clamping voltage should be evaluated against circuit protection requirements.

Q: What packaging options are available for substitutes?

A: Littelfuse 5KP58A is available in Cut Tape (CT). Littelfuse 5KP58A-B is available in Bulk. Vishay 5KP58A-E3/54 is available in Cut Tape (CT). Microchip 5KP58E3/TR13 is available in Tape & Reel (TR). Selection depends on assembly process and volume requirements.

Q: Are all substitutes RoHS and REACH compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the 5KP58-B.