SLD26-018 Equivalent & Substitute Parts

Part Overview

The SLD26-018 is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for protection against transient voltage spikes in electronic circuits. This bidirectional Zener-type TVS diode operates with a 26V reverse standoff voltage and provides peak pulse power dissipation of 5000W. The component is classified as Active product status and carries AEC-Q101 automotive qualification, making it suitable for automotive and industrial applications requiring robust transient protection.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the critical protection parameters while meeting the same packaging and environmental requirements.

Substiute Parts

SLD26-018

Littelfuse Inc.In Stock: 1007SLD26-018 Datasheet

Current PartRFQ

5KP26CA

Diotec SemiconductorIn Stock: 42065KP26CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SLD26-018 are qualified based on the following critical parameters that determine functional equivalence:

• Voltage - Reverse Standoff (Typ): 26V
• Voltage - Breakdown (Min): 28.9V
• Voltage - Clamping (Max) @ Ipp: 42.1V
• Power - Peak Pulse: 5000W
• Package / Case: P600, Axial
• Mounting Type: Through Hole
• Bidirectional Channels: 1
• Type: Zener

The 5KP26CA from Diotec Semiconductor meets these core electrical and mechanical specifications, maintaining identical voltage protection thresholds, equivalent peak pulse power rating, and compatible through-hole P600 axial packaging. Peak pulse current performance (119A vs 121.1A) remains within acceptable operational tolerance for the specified protection application.

Parameter Comparison

Engineering Selection Recommendations

The SLD26-018 carries AEC-Q101 automotive qualification and is designated as Active product status. The 5KP26CA substitute maintains Active product status and ROHS3 compliance, ensuring regulatory alignment for applications requiring equivalent environmental and reliability standards.

Selection between these parts should be based on availability, lead time, and supply chain requirements, as both components satisfy the specified electrical protection parameters and mechanical compatibility requirements for P600 axial through-hole mounting applications.

Frequently Asked Questions (FAQ)

Q: Can the 5KP26CA directly replace the SLD26-018 in existing designs?

A: Yes. Both components share identical voltage protection thresholds (26V standoff, 28.9V breakdown, 42.1V clamping), equivalent peak pulse power rating (5000W), and compatible P600 axial through-hole packaging. Peak pulse current differs by 2.1A (119A vs 121.1A), which remains within acceptable tolerance for transient suppression applications.

Q: Are there differences in operating temperature ranges?

A: The SLD26-018 operates from -55 to 175°C (TJ), while the 5KP26CA operates from -50 to 175°C (TJ). The 5KP26CA has a 5°C higher minimum operating temperature. Applications requiring operation below -50°C must use the SLD26-018.

Q: Do both parts meet the same compliance standards?

A: Both components are ROHS3 compliant. The SLD26-018 carries AEC-Q101 automotive qualification. Compliance requirements for specific applications should be verified against design specifications.

Q: Is the P600 axial package identical between both parts?

A: Yes. Both the SLD26-018 and 5KP26CA use the P600 axial through-hole package, ensuring mechanical and electrical compatibility on printed circuit boards without layout modifications.

Q: What is the basis for substitution between these TVS diodes?

A: Substitution is based on matching critical protection parameters: reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse power rating, and package type. Both components maintain these specifications within acceptable engineering tolerances for transient voltage suppression applications.