Equivalent & Substitute Parts for 5KP26C TVS Diode

Part Overview

The 5KP26C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 26V reverse standoff voltage rating and 5000W peak pulse power handling capability in a through-hole P600 axial package. The 5KP26C is currently classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing design support and procurement.

Substiute Parts

5KP26C

Littelfuse Inc.In Stock: 9735KP26C Datasheet

Current PartRFQ

5KP26CA

Diotec SemiconductorIn Stock: 42065KP26CA Datasheet

DirectRFQ

SLD26-018-B

Littelfuse Inc.In Stock: 787SLD26-018-B Datasheet

MFR RecommendedRFQ

5KP26CE3/TR13

Microchip TechnologyIn Stock: 9735KP26CE3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5KP26C is determined by the following critical parameters:

• Voltage Rating: Reverse standoff voltage of 26V and breakdown voltage minimum of 27.36V–28.9V
• Power Handling: Peak pulse power of 5000W (5kW)
• Package Compatibility: P600 axial through-hole package
• Clamping Voltage: Maximum clamping voltage at peak pulse current (Ipp) must be within acceptable operating margins
• Environmental Compliance: ROHS3 compliance and operating temperature range of -55°C to 175°C

All substitute parts listed maintain these core electrical and mechanical specifications, ensuring functional equivalence in circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

5KP26CA (Diotec Semiconductor): Active product status with ROHS3 compliance. Clamping voltage of 42.1V is lower than the original 5KP26C, providing tighter voltage regulation. Tape & Reel packaging supports automated assembly. Operating temperature minimum of -50°C is 5°C higher than the original specification.

SLD26-018-B (Littelfuse Inc.): Manufacturer-recommended substitute with active product status. Maintains identical operating temperature range (-55°C to 175°C) and clamping voltage of 42.1V. Includes AEC-Q101 automotive qualification and REACH Unaffected status. Supplied in bulk packaging. Peak pulse current of 121.1A exceeds other alternatives.

5KP26CE3/TR13 (Microchip Technology): Active product with ROHS3 compliance and Tape & Reel packaging. Clamping voltage of 46.6V is higher than the original specification, providing wider voltage margin. Operating temperature range matches the original (-55°C to 175°C). Peak pulse current of 107A is the lowest among substitutes.

Frequently Asked Questions (FAQ)

Q: Can 5KP26CA be used as a direct replacement for 5KP26C? A: Yes. Both parts share identical reverse standoff voltage (26V), breakdown voltage minimum (28.9V), and 5000W peak pulse power rating in P600 axial packages. The lower clamping voltage (42.1V vs. 44.21V) provides improved voltage regulation. Operating temperature minimum differs by 5°C (-50°C vs. -55°C).

Q: What is the difference between SLD26-018-B and 5KP26CA? A: Both have identical clamping voltage (42.1V) and power rating (5000W). SLD26-018-B offers AEC-Q101 automotive qualification and maintains the full -55°C to 175°C temperature range. Peak pulse current is slightly higher (121.1A vs. 119A). SLD26-018-B is supplied in bulk; 5KP26CA in Tape & Reel.

Q: Why does 5KP26CE3/TR13 have a higher clamping voltage (46.6V)? A: Clamping voltage variation within the 26V rating class reflects manufacturing tolerances and design differences across manufacturers. The 46.6V clamping voltage remains within acceptable protection margins for 26V-rated applications while providing a wider safety margin.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts (5KP26CA, SLD26-018-B, and 5KP26CE3/TR13) are ROHS3 compliant, meeting environmental and regulatory requirements equivalent to the original 5KP26C.

Q: Can these parts be used interchangeably in automated assembly? A: 5KP26CA and 5KP26CE3/TR13 are supplied in Tape & Reel packaging suitable for automated pick-and-place assembly. SLD26-018-B is supplied in bulk packaging, requiring manual placement or custom tape preparation for automated processes.

Q: What is the impact of the -50°C minimum temperature on 5KP26CA? A: Applications requiring operation below -50°C must use SLD26-018-B or 5KP26CE3/TR13, both rated to -55°C. For applications with minimum operating temperature of -50°C or higher, 5KP26CA is fully compatible.