4426-5NC Fixed Inductor - Equivalent & Substitute Parts

Part Overview

The 4426-5NC is an 18.5 nH unshielded wirewound inductor manufactured by API Delevan Inc., designed for surface mount applications requiring 3 A current rating. This component is classified as Active and is available in standard tape and reel packaging. Alternative equivalent parts may be necessary to meet specific design requirements including higher current ratings, improved DC resistance specifications, or enhanced compliance certifications such as RoHS3 and AEC-Q200 ratings.

Substiute Parts

4426-5NC

API Delevan Inc.In Stock: 10964426-5NC Datasheet

Current PartRFQ

744913118

Würth ElektronikIn Stock: 7147744913118 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 4426-5NC with equivalent parts is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

• Inductance value: 18.5 nH (±5% tolerance)
• Current rating: minimum 3 A
• Inductance frequency test point: 150 MHz
• Q factor @ 150 MHz: 132
• Self-resonant frequency: consistent with application frequency requirements
• Shielding classification: Unshielded
• Mounting type: Surface Mount
• Physical dimensions: 0.145" L x 0.120" W (3.68mm x 3.05mm)
• Height - Seated (Max): 0.125" (3.18mm)
• Operating temperature range: compatible with application requirements
• Moisture sensitivity: MSL 1 (Unlimited)

The substitute part 744913118 (Würth Elektronik WE-CAIR series) meets the core electrical requirements with equivalent inductance, Q factor, and self-resonant frequency specifications. The substitute part provides enhanced current rating (4 A versus 3 A) and specified DC resistance (3.9 mOhm Max), making it suitable for applications requiring these additional performance margins.

Parameter Comparison

Engineering Selection Recommendations

The 4426-5NC and 744913118 are electrically equivalent at the core specification level (18.5 nH inductance, 132 Q @ 150 MHz). Selection between these parts should be based on compliance and certification requirements:

The 744913118 (Würth Elektronik) is preferred for applications requiring ROHS3 compliance and AEC-Q200 certification. This part also provides a higher current rating (4 A) and specified DC resistance (3.9 mOhm Max), offering additional design margins for thermal and power dissipation considerations.

The 4426-5NC (API Delevan) remains suitable for applications with RoHS compliance exemptions and designs limited to 3 A current operation.

The extended lower temperature operating range of the 4426-5NC (-55°C) compared to the 744913118 (-40°C) is a distinguishing factor for cryogenic or extreme-cold-environment applications.

Frequently Asked Questions (FAQ)

Q: Are the 4426-5NC and 744913118 pin-compatible? A: Yes. Both parts feature identical physical dimensions (0.145" L x 0.120" W, 3.68mm x 3.05mm) and height (0.125", 3.18mm), with surface mount nonstandard packaging, enabling direct PCB footprint compatibility.

Q: Can the 744913118 replace the 4426-5NC in all applications? A: The 744913118 is suitable as a replacement provided the application's operating temperature range does not require temperatures below -40°C. The 4426-5NC operates from -55°C, making it necessary for cryogenic applications.

Q: What is the significance of the different self-resonant frequencies (3 GHz vs 2.5 GHz)? A: Both self-resonant frequencies are substantially higher than the specified 150 MHz test frequency. The application must operate below the respective self-resonant frequency to maintain predictable inductor behavior. The 3 GHz SRF of the 4426-5NC provides a wider margin for high-frequency designs.

Q: Which part should be selected for RoHS-compliant designs? A: The 744913118 (Würth Elektronik) is ROHS3 compliant and suitable for designs requiring RoHS compliance. The 4426-5NC is RoHS non-compliant and is limited to applications with regulatory exemptions.

Q: Does the higher current rating of the 744913118 (4 A vs 3 A) affect circuit behavior? A: The higher current rating indicates thermal design margin. At equivalent current levels, inductor behavior remains electrically identical. The higher rating allows the 744913118 to dissipate more power before saturation occurs.

Q: Are moisture sensitivity levels equivalent between parts? A: Yes. Both parts have MSL 1 (Unlimited), indicating no moisture-related precautions are required for storage, handling, or reflow processing.