4426R-5RC Equivalent & Substitute Parts

Part Overview

The 4426R-5RC is an 18.5 nH unshielded wirewound inductor rated for 3 A, manufactured by API Delevan Inc. This component is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement. The part operates across a temperature range of -55°C to 125°C and is ROHS3 compliant with unlimited moisture sensitivity rating.

Substiute Parts

4426R-5RC

API Delevan Inc.In Stock: 7554426R-5RC Datasheet

Current PartRFQ

744913118

Würth ElektronikIn Stock: 7147744913118 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4426R-5RC is determined by the following critical parameters:

• Inductance Value: Must be 18.5 nH ±5%
• Core Type: Air core construction required
• Shielding: Unshielded configuration
• Mounting: Surface mount package
• Current Rating: Minimum 3 A capability
• Q Factor @ 150 MHz: 132 or equivalent
• Self-Resonant Frequency: 3 GHz or higher
• Compliance: ROHS3 compliant

The Würth Elektronik 744913118 meets all substitution criteria with enhanced specifications in current rating (4 A) and DC resistance specification (3.9 mOhm max), while maintaining identical inductance, tolerance, core material, shielding type, and Q factor performance.

Parameter Comparison

Engineering Selection Recommendations

The 744913118 from Würth Elektronik is a qualified substitute for the obsolete 4426R-5RC. Selection is supported by:

• Compliance Alignment: Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating
• Active Product Status: The 744913118 is in active production, ensuring long-term availability and supply chain stability
• Enhanced Specifications: The substitute provides higher current rating (4 A vs. 3 A) and specified DC resistance (3.9 mOhm max), offering improved performance margins
• Electrical Equivalence: Identical inductance value, tolerance, Q factor, and core configuration ensure functional compatibility
• AEC-Q200 Certification: The substitute carries automotive-grade reliability certification, exceeding the original part's qualification level

The lower operating temperature minimum (-40°C vs. -55°C) should be evaluated against specific application requirements. The reduced self-resonant frequency (2.5 GHz vs. 3 GHz) remains suitable for RF and high-frequency applications within the 150 MHz test frequency specification.

Frequently Asked Questions (FAQ)

Q: Can the 744913118 directly replace the 4426R-5RC in existing designs?

A: Yes, provided the operating temperature minimum of -40°C meets application requirements. The electrical characteristics, inductance value, tolerance, and mounting configuration are identical. The higher current rating provides additional design margin.

Q: What is the significance of the Q factor specification?

A: The Q factor of 132 at 150 MHz indicates the inductor's efficiency and loss characteristics at the test frequency. Both parts maintain identical Q factor performance, ensuring equivalent RF behavior in high-frequency circuits.

Q: How does the DC resistance specification affect substitution?

A: The 744913118 specifies maximum DC resistance of 3.9 mOhm, whereas the 4426R-5RC does not provide this specification. Lower DC resistance reduces power dissipation and heat generation, representing an improvement for the substitute part.

Q: Are there packaging differences between these parts?

A: Both parts use surface mount nonstandard packages with similar physical dimensions. The 4426R-5RC is supplied in standard packaging, while the 744913118 is available in Tape & Reel format, which is standard for high-volume production environments.

Q: What compliance certifications should be verified for this substitution?

A: Both parts are ROHS3 compliant and REACH unaffected. The 744913118 additionally carries AEC-Q200 automotive-grade certification, which exceeds the original part's qualification requirements.