SLD26U-017 Equivalent & Substitute Parts

Part Overview

The SLD26U-017 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for transient overvoltage protection in electronic circuits. This component features a 26V reverse standoff voltage with a 42.1V maximum clamping voltage and 121.1A peak pulse current capability, rated at 5000W peak pulse power. The device is housed in a P600 axial through-hole package and is qualified to AEC-Q101 automotive standards. As an active product with established supply availability, equivalent and substitute parts may be required for design flexibility, supply chain optimization, or packaging preference considerations.

Substiute Parts

SLD26U-017

Littelfuse Inc.In Stock: 865SLD26U-017 Datasheet

Current PartRFQ

5KP26A

Littelfuse Inc.In Stock: 46525KP26A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SLD26U-017 is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff: 26V (nominal)
• Voltage - Breakdown (Min): 28.9V
• Voltage - Clamping (Max) @ Ipp: 42.1V
• Current - Peak Pulse (10/1000µs): 121.1A
• Power - Peak Pulse: 5000W
• Package / Case: P600, Axial through-hole configuration
• Unidirectional channel configuration: 1 channel
• Operating Temperature Range: -55°C to 175°C

The 5KP26A qualifies as a direct electrical and mechanical substitute, maintaining identical voltage ratings, peak pulse current, and power dissipation specifications. Both components utilize the same P600 axial package format and support the same operating temperature range. The primary distinction is packaging format: SLD26U-017 is supplied in Tape & Reel (TR) configuration, while 5KP26A is available in Cut Tape (CT) format.

Parameter Comparison

Engineering Selection Recommendations

Both SLD26U-017 and 5KP26A are active products manufactured by Littelfuse Inc. and maintain full compliance with ROHS3 and REACH requirements. Selection between these components should be based on packaging and supply chain requirements:

• SLD26U-017: Supplied in Tape & Reel (TR) format, suitable for automated assembly processes requiring continuous reel-fed component delivery.
• 5KP26A: Supplied in Cut Tape (CT) format, suitable for manual assembly, kit builds, or lower-volume production runs.

Both components are qualified to AEC-Q101 automotive standards and maintain identical electrical performance across all critical parameters. No functional or reliability differences exist between these parts when applied within specified operating conditions.

Frequently Asked Questions (FAQ)

Q: Can 5KP26A be used as a direct replacement for SLD26U-017 in production assembly?

A: Yes. Both components are electrically and mechanically identical. The primary consideration is packaging format compatibility with your assembly process. Tape & Reel (TR) format is optimized for automated pick-and-place equipment, while Cut Tape (CT) format is suitable for manual or semi-automated assembly.

Q: Are there any performance differences between SLD26U-017 and 5KP26A?

A: No. Both components share identical voltage ratings (26V reverse standoff, 42.1V clamping), peak pulse current (121.1A), power dissipation (5000W), and operating temperature range (-55°C to 175°C). Performance is equivalent across all specified electrical parameters.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both SLD26U-017 and 5KP26A are AEC-Q101 qualified and ROHS3 compliant, meeting automotive industry standards for reliability and environmental compliance.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous reels suitable for automated assembly equipment. Cut Tape (CT) packaging provides components on tape segments, typically used for manual assembly, prototyping, or lower-volume applications. Both formats use the same P600 axial package.

Q: Can these parts be used interchangeably in the same circuit design?

A: Yes. No circuit modifications are required when substituting between SLD26U-017 and 5KP26A. Both components provide identical transient voltage suppression performance and are pin-compatible in P600 axial through-hole configurations.