4426R-3RC Equivalent & Substitute Parts

Part Overview

The 4426R-3RC is an 8 nH unshielded wirewound inductor rated for 3 A continuous current, manufactured by API Delevan Inc. This component is designed for high-frequency applications requiring low inductance values with minimal parasitic effects. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity.

Substiute Parts

4426R-3RC

API Delevan Inc.In Stock: 10894426R-3RC Datasheet

Current PartRFQ

744913080

Würth ElektronikIn Stock: 1287744913080 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 744913080 from Würth Elektronik qualifies as a functional equivalent based on the following critical parameters:

• Inductance Value: Both parts specify 8 nH with ±5% tolerance, ensuring electrical equivalence at the primary functional level
• Core Type & Shielding: Both are unshielded air-core wirewound inductors, maintaining identical electromagnetic characteristics
• Frequency Performance: Both achieve Q factor of 140 @ 150 MHz and operate within compatible frequency ranges
• Mounting & Package: Both are surface mount components with nonstandard package dimensions
• Environmental Compliance: Both meet ROHS3 and REACH requirements with MSL 1 rating

The substitute part offers enhanced current rating (4 A vs. 3 A) and specified DC resistance (2.6 mOhm max), providing superior thermal performance and lower losses. The extended self-resonant frequency (5 GHz vs. 3 GHz) indicates improved high-frequency stability.

Parameter Comparison

Engineering Selection Recommendations

The 744913080 is suitable for direct substitution in applications currently using the 4426R-3RC. The substitute part is in active production status, ensuring long-term availability and supply chain stability compared to the obsolete original component.

For applications operating at the upper thermal limits of the original specification (-55°C minimum), verify that the 744913080's reduced lower temperature bound (-40°C minimum) is acceptable for your operating environment. The enhanced current rating and specified DC resistance of the substitute provide margin for thermal management in high-current or high-frequency switching applications.

The AEC-Q200 automotive qualification of the 744913080 indicates additional process controls and reliability testing beyond the original part's specification, beneficial for mission-critical applications.

Frequently Asked Questions (FAQ)

Q: Can the 744913080 replace the 4426R-3RC in all applications?

A: The 744913080 meets or exceeds all critical electrical parameters of the 4426R-3RC. Verify the operating temperature minimum requirement; the substitute operates to -40°C versus -55°C for the original. Physical dimensions are similar but not identical; confirm PCB layout compatibility.

Q: What is the significance of the higher current rating on the substitute part?

A: The 744913080's 4 A rating versus the original 3 A rating indicates lower saturation current margin and improved thermal performance. This allows operation at higher current levels without inductor saturation or excessive temperature rise.

Q: Does the specified DC resistance of the 744913080 affect circuit performance?

A: The 2.6 mOhm maximum DC resistance of the substitute is a measurable parameter not provided for the original part. In RF and high-frequency applications, this low resistance minimizes I²R losses and improves overall circuit efficiency.

Q: Are there packaging differences between these parts?

A: Both parts use nonstandard surface mount packages with similar dimensions (0.145" L × 0.125" W for the original; 0.145" L × 0.120" W for the substitute). Verify footprint compatibility with your PCB design before implementation.

Q: What does the AEC-Q200 rating on the substitute part indicate?

A: AEC-Q200 certification confirms the part meets automotive-grade reliability and testing standards. This qualification is not specified for the original part but provides additional assurance of manufacturing consistency and long-term performance.