4426R-6NC Equivalent & Substitute Parts Reference

Part Overview

The 4426R-6NC is a 17.5 nH unshielded wirewound inductor manufactured by API Delevan Inc., rated for 3 A continuous current. This surface mount component is designed for high-frequency applications with a self-resonant frequency of 3 GHz and operates across the temperature range of -55°C to 125°C. The part is actively produced and ROHS3 compliant, with unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified when alternative components maintain the same inductance value, core material, shielding configuration, and mounting technology while meeting or exceeding the electrical performance requirements of the original specification.

Substiute Parts

4426R-6NC

API Delevan Inc.In Stock: 7374426R-6NC Datasheet

Current PartRFQ

744914117

Würth ElektronikIn Stock: 1092744914117 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 4426R-6NC are identified based on strict electrical and mechanical parameter matching. The substitution criteria are:

Critical Parameters (Must Match):

• Inductance value: 17.5 nH
• Type: Wirewound construction
• Core material: Air core
• Shielding: Unshielded configuration
• Mounting type: Surface mount
• Package classification: Nonstandard

Performance Parameters (Must Meet or Exceed):

• Current rating: Minimum 3 A (substitutes may exceed this rating)
• Q factor at 150 MHz: 100 or higher
• Self-resonant frequency: 2.2 GHz or higher
• Operating temperature range: Must cover -55°C to 125°C or be compatible with application requirements

Compliance Parameters:

• RoHS3 compliance required
• MSL rating of 1 (Unlimited) preferred

The Würth Elektronik 744914117 qualifies as a substitute because it maintains identical inductance, core material, shielding, and mounting technology while providing superior current rating (4 A vs. 3 A), tighter tolerance (±5% vs. ±30%), and specified DC resistance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (4426R-6NC): The 4426R-6NC remains the specified component when the extended low-temperature operating range (-55°C) is required and the 3 GHz self-resonant frequency is necessary for application performance. This part is actively produced with confirmed inventory availability.

Substitute Part (744914117): The Würth Elektronik 744914117 is suitable as a substitute when:

• Operating temperature minimum requirement does not exceed -40°C
• Application frequency does not require operation above 2.2 GHz self-resonant frequency
• Tighter inductance tolerance (±5%) provides design margin benefits
• Higher current rating (4 A) provides additional thermal headroom
• AEC-Q200 automotive qualification is beneficial for reliability documentation
• Physical dimensions (minimal variations in width and height) are compatible with PCB layout

Both parts maintain ROHS3 compliance, MSL 1 rating, and active production status. The substitute offers enhanced specifications in tolerance and current rating while introducing minor constraints in temperature range and self-resonant frequency.

Frequently Asked Questions (FAQ)

Q: Can the 744914117 be used as a direct replacement for the 4426R-6NC in all applications?

A: The 744914117 is electrically compatible for applications where the operating temperature minimum is -40°C or higher and the maximum operating frequency does not exceed 2.2 GHz. Physical dimensions differ slightly; verify PCB layout compatibility before substitution.

Q: What is the significance of the ±30% tolerance on the 4426R-6NC versus the ±5% tolerance on the 744914117?

A: The 4426R-6NC allows inductance variation between 12.25 nH and 22.75 nH. The 744914117 restricts variation to 16.625 nH to 18.375 nH. Applications requiring tighter inductance control benefit from the substitute part's narrower tolerance band.

Q: Are there physical compatibility issues between these two parts?

A: Both parts use identical length (0.270" / 6.86mm) and nonstandard package classification. Width differs by 0.005" (0.13mm) and height by 0.005" (0.13mm). These minimal differences typically do not affect PCB assembly; however, verify footprint and clearance specifications for your specific design.

Q: Does the lower self-resonant frequency of the 744914117 (2.2 GHz vs. 3 GHz) affect substitution suitability?

A: The self-resonant frequency defines the upper limit of linear inductor operation. If your application operates below 2.2 GHz, the substitute is suitable. Applications requiring operation near or above 2.2 GHz should retain the original 4426R-6NC specification.

Q: What is the advantage of AEC-Q200 rating on the 744914117?

A: AEC-Q200 is an automotive industry qualification standard. The 744914117 carries this certification, providing documented reliability data for automotive and high-reliability applications. The 4426R-6NC does not specify this rating.

Q: Can I use the 744914117 in applications requiring -55°C operation?

A: No. The 744914117 is rated for -40°C minimum operating temperature. Applications requiring -55°C operation must use the 4426R-6NC or identify an alternative part with extended low-temperature specification.

Q: How do the current ratings affect component selection?

A: The 4426R-6NC is rated for 3 A continuous current. The 744914117 is rated for 4 A. If your circuit requires 3.5 A, only the 744914117 is suitable. If your circuit requires 3 A or less, both parts are acceptable; the higher rating of the substitute provides additional thermal margin.

Q: Are both parts available in the same packaging format?

A: Yes. Both parts are supplied in Tape & Reel (TR) packaging for automated assembly. Both carry MSL 1 (Unlimited) moisture sensitivity rating, requiring no special storage precautions.