AIRD-02-1R8K Equivalent & Substitute Parts

Part Overview

The AIRD-02-1R8K is a 1.8 µH unshielded drum core wirewound inductor manufactured by Abracon LLC, rated for 11.4 A continuous current with a maximum DC resistance of 3 mOhm. This through-hole radial component is designed for applications requiring fixed inductance in compact form factors. The part is currently obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability.

Substiute Parts

AIRD-02-1R8K

Abracon LLCIn Stock: 1163AIRD-02-1R8K Datasheet

Current PartRFQ

AIRD-02-1R8N

Abracon LLCIn Stock: 1154AIRD-02-1R8N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AIRD-02-1R8K is determined by the following critical parameters:

• Inductance Value: 1.8 µH (primary functional requirement)
• Current Rating: 11.4 A minimum (thermal and saturation performance)
• DC Resistance: 3 mOhm maximum (power loss and thermal characteristics)
• Saturation Current: 68 A (core performance under transient conditions)
• Core Material: Ferrite (magnetic properties and frequency response)
• Shielding Configuration: Unshielded (EMI characteristics and board layout)
• Mounting Interface: Through Hole, Radial, Vertical Cylinder (mechanical compatibility)
• Physical Dimensions: 0.827" diameter, 21.00 mm (PCB footprint compatibility)

The AIRD-02-1R8N qualifies as a direct substitute based on matching all critical electrical and mechanical parameters within the allowed tolerance specifications.

Parameter Comparison

Engineering Selection Recommendations

The AIRD-02-1R8N is the manufacturer-recommended substitute for the obsolete AIRD-02-1R8K. Both components maintain identical electrical performance specifications for inductance value, current rating, saturation current, and DC resistance. The substitute part is currently in active production status, ensuring supply chain continuity.

The AIRD-02-1R8N provides an extended operating temperature range (-40°C ~ 125°C versus -25°C ~ 85°C), which offers improved thermal margin for applications operating in extreme environments. The inductance tolerance specification widens from ±10% to ±30%; this difference is acceptable for fixed inductor applications where the primary functional requirement is the nominal inductance value and current handling capability.

Both parts maintain identical RoHS3 compliance, REACH unaffected status, and MSL rating, ensuring regulatory and environmental compatibility. Physical dimensions and mounting interfaces are identical, confirming direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can AIRD-02-1R8N be used as a direct replacement for AIRD-02-1R8K in existing designs?

A: Yes. The substitute part maintains identical inductance value, current rating, saturation current, DC resistance, core material, shielding configuration, and physical dimensions. Direct substitution is supported without circuit modifications or PCB layout changes.

Q: What is the significance of the inductance tolerance difference (±10% vs ±30%)?

A: The AIRD-02-1R8K specifies ±10% tolerance, while the AIRD-02-1R8N specifies ±30%. For fixed inductor applications, the nominal inductance value and current handling capability are the primary functional requirements. The wider tolerance of the substitute part does not affect compatibility in standard filtering, energy storage, or impedance matching applications where inductance variation within ±30% is acceptable.

Q: Are there any thermal performance differences between these parts?

A: Both parts maintain identical DC resistance (3 mOhm maximum) and current rating (11.4 A), resulting in equivalent power dissipation and thermal characteristics under rated operating conditions. The AIRD-02-1R8N offers an extended operating temperature range, providing additional thermal margin for high-temperature environments.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the AIRD-02-1R8K and AIRD-02-1R8N are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (unlimited moisture sensitivity). Regulatory and environmental compliance is identical.

Q: What is the availability status of each part?

A: The AIRD-02-1R8K is obsolete with limited remaining inventory (1150 pcs). The AIRD-02-1R8N is in active production with current inventory of 1092 pcs, ensuring ongoing supply chain availability for new designs and production runs.