4426R-4NC Fixed Inductor Equivalent & Substitute Parts

Part Overview

The 4426R-4NC is a 12.5 nH unshielded wirewound surface mount inductor manufactured by API Delevan Inc., rated for 3 A continuous current. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductance value and package category.

Substiute Parts

4426R-4NC

API Delevan Inc.In Stock: 11554426R-4NC Datasheet

Current PartRFQ

AIAC-1512C-12N5J-T

Abracon LLCIn Stock: 3098AIAC-1512C-12N5J-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 4426R-4NC are identified based on strict equivalence of the following parameters:

Critical Matching Parameters:

• Inductance value of 12.5 nH (electrical core requirement)
• Unshielded air-core wirewound construction (electromagnetic performance)
• Surface mount package category (mechanical compatibility)
• Current rating equal to or greater than 3 A (thermal and saturation performance)

Compliance Parameters:

• RoHS3 compliance status (regulatory requirement)
• Active product status (availability and support)

Performance Reference Parameters:

• Q factor at 150 MHz and self resonant frequency serve as performance indicators but do not restrict substitution eligibility

The AIAC-1512C-12N5J-T from Abracon LLC meets all critical matching parameters with enhanced specifications in current rating (4.3 A) and inductance tolerance (±5% versus ±30%).

Parameter Comparison

Engineering Selection Recommendations

4426R-4NC (API Delevan Inc.) is the primary component selection when:

• Operating temperature range must extend to -55°C minimum
• PCB layout requires the larger footprint (3.68mm x 3.18mm)
• Inductance tolerance of ±30% is acceptable for the application
• DC resistance specification is not critical

AIAC-1512C-12N5J-T (Abracon LLC) is the substitute selection when:

• Operating temperature minimum of -40°C is sufficient
• Space-constrained PCB layout benefits from smaller footprint (3.30mm x 2.50mm) and lower profile (2.80mm)
• Tighter inductance tolerance (±5%) improves circuit performance
• DC resistance specification (3 mOhm Max) is required or beneficial
• Higher current rating (4.3 A) provides additional thermal margin

Both components maintain Active product status and full RoHS3 compliance. Selection between these parts is determined by application-specific requirements for temperature range, PCB space, tolerance, and DC resistance specifications.

Frequently Asked Questions (FAQ)

Q: Can the AIAC-1512C-12N5J-T directly replace the 4426R-4NC in all applications?

A: Direct replacement is possible when the application operating temperature range does not require operation below -40°C. The substitute part meets or exceeds all critical electrical parameters (inductance, current rating, Q factor, self resonant frequency) and maintains equivalent shielding and core material. PCB layout must accommodate the smaller footprint dimensions.

Q: What is the impact of the different inductance tolerances (±30% versus ±5%)?

A: The 4426R-4NC tolerance of ±30% results in an inductance range of 8.75 nH to 16.25 nH. The AIAC-1512C-12N5J-T tolerance of ±5% results in a range of 11.875 nH to 13.125 nH. Applications requiring tighter inductance control benefit from the substitute part's narrower tolerance band.

Q: Are there mechanical compatibility concerns with the different package dimensions?

A: The AIAC-1512C-12N5J-T is smaller in both length (3.30mm versus 3.68mm) and width (2.50mm versus 3.18mm) with lower seated height (2.80mm versus 3.05mm). PCB footprint patterns must be verified for compatibility. The smaller substitute part may require layout adjustment but generally presents no mechanical incompatibility.

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

A: The 4426R-4NC does not specify DC resistance. The AIAC-1512C-12N5J-T specifies 3 mOhm maximum. For RF and high-frequency applications, this low DC resistance is beneficial for minimizing losses. Applications sensitive to DC resistance must evaluate whether the 3 mOhm specification meets requirements.

Q: What is the significance of the current rating difference (3 A versus 4.3 A)?

A: The substitute part's higher current rating (4.3 A) provides additional thermal margin and saturation performance headroom. Applications operating at or near the 3 A rating of the main part benefit from the substitute's higher rating. No derating is required when substituting to the higher-rated component.

Q: Are both parts suitable for high-frequency applications?

A: Both components are specified for high-frequency operation with identical Q factors (137 @ 150 MHz) and self resonant frequencies (3 GHz). Both are suitable for RF and microwave circuit applications within their respective operating temperature ranges.

Q: What compliance certifications apply to both parts?

A: Both the 4426R-4NC and AIAC-1512C-12N5J-T are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8504.50.8000. Both carry MSL rating 1 (unlimited moisture sensitivity). Regulatory and environmental compliance is equivalent between the two parts.