API Delevan 4426-8 Equivalent & Substitute Parts

Part Overview

The API Delevan 4426-8 is a 28 nH unshielded wirewound surface mount inductor rated for 3 A continuous current. This component is classified as Active product status and is supplied in Tape & Reel packaging. The 4426-8 operates across the temperature range of -55°C to 125°C and demonstrates a quality factor of 105 at 150 MHz test frequency.

Equivalent and substitute parts are identified when design requirements permit component interchange based on matching electrical specifications, mechanical dimensions, and operational parameters. Substitute parts are necessary when primary components face inventory constraints, obsolescence, or when design flexibility allows selection from multiple qualified sources meeting identical or superior performance criteria.

Substiute Parts

4426-8

API Delevan Inc.In Stock: 10784426-8 Datasheet

Current PartRFQ

4426R-8 TR 500

API Delevan Inc.In Stock: 12044426R-8 TR 500 Datasheet

DirectRFQ

744914128

Würth ElektronikIn Stock: 1280744914128 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the API Delevan 4426-8 are qualified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Inductance value: 28 nH
• Inductance tolerance: ±5%
• Shielding configuration: Unshielded
• Mounting type: Surface Mount
• Physical dimensions: 0.270" L x 0.120" W (6.86mm x 3.05mm)
• Height - Seated (Max): 0.125" (3.18mm)
• Quality factor: 105 @ 150 MHz
• Packaging: Tape & Reel (TR)

Secondary Compatibility Parameters:

• Current rating: 3 A minimum
• Operating temperature range: -55°C to 125°C minimum
• Self-resonant frequency: 2.6 GHz reference

Parts meeting all primary criteria and maintaining or exceeding secondary parameters are classified as direct substitutes. Parts with enhanced current ratings or improved compliance certifications are classified as similar substitutes with superior performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

API Delevan 4426R-8 TR 500 (Direct Substitute)

The 4426R-8 TR 500 is a direct substitute for the 4426-8. Both components are manufactured by API Delevan Inc. and share identical electrical specifications, mechanical dimensions, and thermal operating range. The 4426R-8 TR 500 achieves ROHS3 compliance, whereas the 4426-8 is RoHS non-compliant. Selection of the 4426R-8 TR 500 is appropriate when regulatory compliance with RoHS3 requirements is mandated. Current inventory for the 4426R-8 TR 500 is 1136 pieces.

Würth Elektronik 744914128 (Similar Substitute)

The 744914128 is a similar substitute manufactured by Würth Elektronik. This component matches the 4426-8 in inductance value, tolerance, shielding configuration, physical dimensions, and quality factor. The 744914128 provides enhanced current rating of 4 A compared to the 3 A rating of the 4426-8, and includes specified DC resistance of 6 mOhm maximum. The 744914128 achieves ROHS3 compliance and carries AEC-Q200 automotive qualification. The operating temperature range is -40°C to 125°C, which covers the upper portion of the 4426-8 range. The self-resonant frequency is 1.8 GHz, lower than the 4426-8 specification of 2.6 GHz. Current inventory for the 744914128 is 1181 pieces.

Selection of the 744914128 is appropriate when enhanced current capacity, specified DC resistance, automotive qualification, or RoHS3 compliance is required. Applications operating below -40°C require the 4426-8 or 4426R-8 TR 500.

Frequently Asked Questions (FAQ)

Q: Can the 4426R-8 TR 500 be used as a direct replacement for the 4426-8?

A: Yes. The 4426R-8 TR 500 is a direct substitute. Both components share identical inductance (28 nH), tolerance (±5%), current rating (3 A), shielding (unshielded), quality factor (105 @ 150 MHz), self-resonant frequency (2.6 GHz), operating temperature range (-55°C to 125°C), and physical dimensions (0.270" L x 0.120" W, 0.125" height). The primary difference is RoHS3 compliance status of the 4426R-8 TR 500.

Q: What are the key differences between the 4426-8 and the Würth Elektronik 744914128?

A: The 744914128 provides a higher current rating (4 A versus 3 A), includes specified DC resistance (6 mOhm maximum), carries AEC-Q200 automotive qualification, and achieves RoHS3 compliance. The 744914128 has a lower self-resonant frequency (1.8 GHz versus 2.6 GHz) and a narrower operating temperature range (-40°C to 125°C versus -55°C to 125°C). All other electrical and mechanical parameters are identical.

Q: Is the 744914128 suitable for applications requiring operation below -40°C?

A: No. The 744914128 operating temperature range begins at -40°C. Applications requiring operation at -55°C must use the 4426-8 or 4426R-8 TR 500.

Q: Are all three parts packaged identically?

A: Yes. The 4426-8, 4426R-8 TR 500, and 744914128 are all supplied in Tape & Reel (TR) packaging with identical physical dimensions of 0.270" L x 0.120" W and maximum seated height of 0.125".

Q: Which substitute part should be selected for RoHS3 compliant designs?

A: Both the 4426R-8 TR 500 and 744914128 achieve ROHS3 compliance. The 4426R-8 TR 500 is the direct substitute when RoHS3 compliance is the primary requirement. The 744914128 is selected when additional benefits such as higher current rating, specified DC resistance, or automotive qualification are needed.

Q: What is the significance of the quality factor (Q) specification?

A: The quality factor of 105 @ 150 MHz is identical across all three parts. This parameter indicates the ratio of energy stored to energy dissipated in the inductor at the test frequency and is a measure of inductor efficiency. Identical Q values confirm electrical performance equivalence at the specified frequency.

Q: Can the 744914128 be used in applications designed for the 4426-8 without circuit modification?

A: The 744914128 is electrically and mechanically compatible with the 4426-8 for most applications. However, the lower self-resonant frequency (1.8 GHz versus 2.6 GHz) may affect performance in high-frequency circuits operating near or above 1.8 GHz. Circuit validation is necessary for applications operating in this frequency range.