API Delevan 4426-9NC Equivalent & Substitute Parts

Part Overview

The API Delevan 4426-9NC is a fixed unshielded wirewound inductor with an inductance value of 35.5 nH, rated for 3 A continuous current. This surface mount component operates across the temperature range of -55°C to 125°C and is designed for high-frequency applications with a self-resonant frequency of 1.8 GHz. The part is currently active in production with 890 pieces available in stock.

Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting application requirements. Alternative sources may be necessary due to supply constraints, lead time considerations, or specific compliance requirements.

Substiute Parts

4426-9NC

API Delevan Inc.In Stock: 9184426-9NC Datasheet

Current PartRFQ

744914135

Würth ElektronikIn Stock: 1578744914135 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4426-9NC is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Inductance value: 35.5 nH with ±5% tolerance
• Core material: Air (unshielded wirewound construction)
• Mounting type: Surface Mount
• Package dimensions: 6.86 mm L × 3.05 mm W × 3.18 mm H (maximum seated height)
• Inductance test frequency: 150 MHz

Allowable Variation Parameters:

• Current rating: Equal to or greater than 3 A
• Operating temperature range: Must encompass or exceed -55°C to 125°C
• Q factor @ 150 MHz: Equivalent performance at 112 or higher
• Self-resonant frequency: 1.5 GHz or higher
• Compliance certifications: RoHS and AEC-Q200 status may differ

The Würth Elektronik 744914135 meets all mandatory matching criteria while providing enhanced current rating (4 A) and improved compliance status (RoHS3 Compliant, AEC-Q200 rated).

Parameter Comparison

Engineering Selection Recommendations

Primary Part: API Delevan 4426-9NC

Select the 4426-9NC when the application requires the extended lower temperature operating limit of -55°C and the higher self-resonant frequency of 1.8 GHz. This part is suitable for non-regulated markets where RoHS compliance is not mandated. Current availability is 890 pieces in stock.

Substitute Part: Würth Elektronik 744914135

The 744914135 is a direct functional substitute when the application operates within the -40°C to 125°C temperature range. This part provides advantages including RoHS3 compliance, AEC-Q200 automotive qualification, and higher current rating (4 A versus 3 A). The 744914135 is preferred for regulated markets, automotive applications, or when enhanced component reliability certification is required. Inventory availability is 1489 pieces in stock.

Selection Criteria:

• Use 4426-9NC if extended low-temperature operation below -40°C is required
• Use 4426-9NC if self-resonant frequency above 1.5 GHz is critical
• Use 744914135 for RoHS-regulated applications
• Use 744914135 for automotive or AEC-Q200 qualified designs
• Use 744914135 when current margin above 3 A is beneficial

Both parts share identical inductance, tolerance, core material, shielding, Q factor, package dimensions, and moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can the Würth Elektronik 744914135 replace the API Delevan 4426-9NC in all applications?

A: The 744914135 is a functional substitute for applications operating within -40°C to 125°C. If your circuit requires operation below -40°C, the 4426-9NC is required. If your design depends on self-resonant frequency above 1.5 GHz, verify the 744914135 performance at your specific operating frequency.

Q: What is the significance of the current rating difference (3 A vs 4 A)?

A: The 744914135 has a higher current rating of 4 A compared to the 4426-9NC at 3 A. This means the substitute part can handle greater continuous current without saturation. If your circuit draws 3 A or less, both parts are suitable. The higher rating on the substitute provides additional design margin.

Q: Are the package dimensions identical?

A: Yes. Both the 4426-9NC and 744914135 have identical surface mount package dimensions of 6.86 mm length × 3.05 mm width × 3.18 mm maximum seated height. They are mechanically interchangeable on the PCB.

Q: What does RoHS3 compliance mean for the 744914135?

A: RoHS3 compliance indicates the 744914135 meets the Restriction of Hazardous Substances Directive requirements, restricting the use of specific hazardous materials. The 4426-9NC is RoHS non-compliant. For applications in regulated markets or with environmental requirements, the 744914135 is the appropriate choice.

Q: Why is the self-resonant frequency lower on the 744914135?

A: The 744914135 has a self-resonant frequency of 1.5 GHz compared to 1.8 GHz on the 4426-9NC. Both frequencies are well above typical operating frequencies for 35.5 nH inductors. Verify your circuit's operating frequency is below the self-resonant frequency of your selected part to ensure predictable inductor behavior.

Q: Does the AEC-Q200 rating on the 744914135 matter for non-automotive applications?

A: AEC-Q200 is an automotive qualification standard. For non-automotive applications, this rating is not required but indicates the part has undergone rigorous reliability testing. If your application benefits from enhanced reliability documentation, the 744914135 provides this advantage.

Q: Can I use the 744914135 in a circuit designed for -55°C operation?

A: No. The 744914135 operating temperature range is -40°C to 125°C. If your circuit must operate at -55°C, you must use the 4426-9NC, which is rated to -55°C.

Q: Are the inductance values and tolerances identical?

A: Yes. Both parts have 35.5 nH inductance with ±5% tolerance and are tested at 150 MHz. The Q factor at 150 MHz is also identical at 112 for both parts.