4426-3 Fixed Inductor Equivalent & Substitute Parts

Part Overview

The 4426-3 is an 8 nanohenry unshielded wirewound surface mount inductor manufactured by API Delevan Inc., rated for 3 amperes continuous current. This component is designed for high-frequency applications requiring low inductance values with minimal parasitic effects. The part maintains active product status with 1055 units available in inventory. Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining mechanical compatibility and package dimensions.

Substiute Parts

4426-3

API Delevan Inc.In Stock: 11354426-3 Datasheet

Current PartRFQ

AL12A08N0GTR

KYOCERA AVXIn Stock: 1334AL12A08N0GTR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4426-3 is determined by the following critical parameters:

Electrical Equivalence Criteria:

• Inductance value of 8 nH within ±5% tolerance band
• Unshielded air-core construction
• Q factor performance at 150 MHz test frequency
• Self-resonant frequency capability

Mechanical Compatibility Criteria:

• Surface mount package type
• Nonstandard package case matching 0.145" L x 0.120" W x 0.125" H seated height
• Tape & Reel packaging format

Performance Criteria:

• Current rating equal to or exceeding 3 A
• Operating temperature range encompassing -55°C to 125°C minimum

The AL12A08N0GTR from KYOCERA AVX meets these substitution criteria with identical inductance specification, matching package dimensions, and enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (4426-3): The 4426-3 remains the specified component for applications requiring the full operating temperature range of -55°C to 125°C. This part is active in production with established supply availability.

Substitute Part (AL12A08N0GTR): The AL12A08N0GTR qualifies as a direct substitute for applications where the operating temperature minimum of -40°C is acceptable. This substitute provides enhanced electrical performance through tighter inductance tolerance (±2% versus ±5%), higher current rating (4 A versus 3 A), and higher self-resonant frequency (5 GHz versus 3 GHz). The AL12A08N0GTR carries ROHS3 compliance certification, whereas the 4426-3 is RoHS non-compliant. Both parts maintain identical mechanical compatibility and package footprint.

Frequently Asked Questions (FAQ)

Q: Can the AL12A08N0GTR replace the 4426-3 in all applications?

A: The AL12A08N0GTR is compatible with applications operating at temperatures no lower than -40°C. If your circuit operates below -40°C, the 4426-3 must be retained. For applications within the -40°C to 125°C range, the substitute is electrically and mechanically compatible.

Q: What is the significance of the tighter inductance tolerance in the substitute part?

A: The AL12A08N0GTR specifies ±2% inductance tolerance compared to ±5% for the 4426-3. This tighter tolerance reduces inductance variation across the manufacturing batch, which may improve circuit performance consistency in precision applications. However, both parts meet the same 8 nH nominal specification.

Q: Does the higher current rating of the AL12A08N0GTR affect circuit operation?

A: No. A higher current rating indicates the substitute can safely handle greater current without thermal degradation. If your circuit draws 3 A or less, both parts perform identically in this regard. The higher rating provides additional design margin.

Q: Are the package dimensions identical between these parts?

A: Yes. Both the 4426-3 and AL12A08N0GTR share identical nonstandard package dimensions of 0.145" L x 0.120" W with 0.125" maximum seated height. They are mechanically interchangeable on the PCB.

Q: What is the impact of the different self-resonant frequencies?

A: The AL12A08N0GTR exhibits a self-resonant frequency of 5 GHz compared to 3 GHz for the 4426-3. This higher SRF in the substitute extends the frequency range over which the inductor maintains predictable behavior. For applications operating below 3 GHz, both parts perform equivalently.

Q: Does RoHS compliance affect substitution eligibility?

A: RoHS compliance is a regulatory and supply chain consideration rather than an electrical performance factor. The AL12A08N0GTR is ROHS3 compliant while the 4426-3 is non-compliant. If your application or region requires RoHS compliance, the substitute is the appropriate choice.