4426R-6 Equivalent & Substitute Parts Reference

Part Overview

The 4426R-6 is a fixed unshielded wirewound inductor manufactured by API Delevan Inc., rated for 17.5 nH inductance with a 3 A current capacity. This component is classified as an active product and is ROHS3 compliant. The part operates across an industrial temperature range of -55°C to 125°C and is designed for surface mount applications in nonstandard package configurations.

Substitute parts are identified when equivalent electrical performance can be maintained across critical parameters including inductance value, tolerance, current rating, frequency characteristics, and physical dimensions. Alternative components may be required due to inventory availability, supply chain considerations, or specific application requirements for enhanced specifications.

Substiute Parts

4426R-6

API Delevan Inc.In Stock: 8854426R-6 Datasheet

Current PartRFQ

744914117

Würth ElektronikIn Stock: 1092744914117 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4426R-6 is determined by strict alignment of the following critical parameters:

Inductance Specification: The substitute part must maintain 17.5 nH inductance with ±5% tolerance to ensure circuit performance equivalence.

Core Configuration: Both the main part and substitute must utilize air core construction to maintain consistent frequency response and Q factor characteristics.

Shielding Classification: Unshielded construction is required for substitution compatibility.

Mounting Technology: Surface mount configuration is mandatory for mechanical and assembly compatibility.

Physical Envelope: Dimensions of 6.86 mm length × 3.05 mm width × 3.18 mm maximum height must be maintained for PCB layout compatibility.

Frequency Performance: Q factor of 100 at 150 MHz and self-resonant frequency characteristics must be preserved within acceptable operating ranges.

Current Capacity: The substitute part must support the application's current requirements. Enhanced current ratings above 3 A are acceptable as they provide design margin without compromising performance.

Compliance Standards: ROHS3 compliance and MSL 1 rating are required for environmental and moisture sensitivity compatibility.

The Würth Elektronik 744914117 meets all substitution criteria while providing enhanced specifications in current rating and DC resistance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (4426R-6): Recommended for applications requiring the extended lower temperature operating limit of -55°C. This part maintains active product status with standard compliance certifications and is available in bulk packaging.

Substitute Selection (744914117): The Würth Elektronik 744914117 is suitable for applications operating within the -40°C to 125°C temperature range. This substitute provides enhanced specifications including 4 A current rating (33% margin above the primary part) and AEC-Q200 automotive-grade qualification. The specified DC resistance of 4.5 mOhm maximum provides additional design transparency. The substitute is supplied in tape and reel packaging, which may be advantageous for automated assembly processes.

Selection Criteria: Choose the 4426R-6 when extended low-temperature performance is required. Select the 744914117 when automotive-grade reliability (AEC-Q200) is specified or when higher current capacity provides design margin for the application.

Both parts maintain electrical equivalence across inductance, tolerance, core configuration, shielding, Q factor, and physical dimensions. The self-resonant frequency difference (3 GHz vs. 2.2 GHz) is acceptable for applications operating at or below 150 MHz test frequency.

Frequently Asked Questions (FAQ)

Q: Can the 744914117 directly replace the 4426R-6 in all applications?

A: The 744914117 is electrically and mechanically compatible with the 4426R-6 for applications operating within -40°C to 125°C. If your application requires operation below -40°C, the 4426R-6 is required. Both parts maintain identical inductance, tolerance, core material, shielding, Q factor, and physical dimensions.

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

A: AEC-Q200 is an automotive-grade qualification standard. The 744914117 meets this specification, making it suitable for automotive and high-reliability applications. The 4426R-6 does not carry this designation but remains suitable for standard industrial applications.

Q: How does the 4 A current rating of the 744914117 compare to the 3 A rating of the 4426R-6?

A: The 744914117 provides a 33% higher current capacity. This enhanced rating does not affect electrical performance and provides additional design margin. If your circuit requires exactly 3 A or less, either part is acceptable. The higher rating of the substitute does not introduce compatibility issues.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the 4426R-6 and 744914117 share identical dimensions of 6.86 mm length × 3.05 mm width × 3.18 mm maximum height. PCB layout and mechanical mounting are fully compatible.

Q: What is the difference in self-resonant frequency between these parts?

A: The 4426R-6 has a self-resonant frequency of 3 GHz, while the 744914117 is 2.2 GHz. Both parts are tested and specified at 150 MHz. For applications operating at or below 150 MHz, this difference does not affect performance. Applications requiring operation above 2.2 GHz should use the 4426R-6.

Q: Does packaging type affect electrical performance?

A: No. The 4426R-6 is supplied in bulk packaging, while the 744914117 is supplied in tape and reel format. Packaging affects handling and assembly processes but does not alter electrical characteristics. Tape and reel packaging is typically preferred for automated assembly operations.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the 4426R-6 and 744914117 are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard PCB assembly processes and environmental regulations.

Q: What does the ±5% inductance tolerance mean for circuit design?

A: The ±5% tolerance indicates that the actual inductance value will fall within the range of 16.625 nH to 18.375 nH. Both the primary part and substitute maintain this identical tolerance specification, ensuring equivalent circuit performance.