AIRD-02-1R8M Equivalent & Substitute Parts

Part Overview

The AIRD-02-1R8M 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 functionally equivalent alternatives to maintain design continuity and ensure supply chain availability for new production or repair applications.

Substiute Parts

AIRD-02-1R8M

Abracon LLCIn Stock: 962AIRD-02-1R8M 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-02-1R8M is determined by strict equivalence across the following critical parameters:

• Inductance Value: Must be 1.8 µH (tolerance variations are acceptable within engineering design margins)
• Current Rating: Must support minimum 11.4 A continuous operation
• DC Resistance: Must not exceed 3 mOhm maximum
• Saturation Current: Must maintain 68 A minimum saturation point
• Core Material: Must be ferrite to ensure frequency response and thermal characteristics
• Shielding Configuration: Must be unshielded to match electromagnetic profile
• Mounting Technology: Must be through-hole compatible
• Physical Package: Must be radial, vertical cylinder form factor with 0.827" (21.00mm) diameter

The AIRD-02-1R8N meets all substitution criteria and is classified as a manufacturer-recommended equivalent.

Parameter Comparison

Engineering Selection Recommendations

The AIRD-02-1R8N is the direct substitute for the obsolete AIRD-02-1R8M. Selection is based on the following engineering factors:

Product Status: The AIRD-02-1R8M is obsolete and no longer manufactured. The AIRD-02-1R8N is an active production part from the same manufacturer and series, ensuring long-term supply chain viability.

Electrical Equivalence: Both parts maintain identical inductance (1.8 µH), current rating (11.4 A), saturation current (68 A), and DC resistance (3 mOhm maximum). The inductance tolerance difference (±20% versus ±30%) is within acceptable engineering margins for most applications.

Regulatory Compliance: Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity ratings (MSL 1). No compliance barriers exist for substitution.

Thermal Performance: The AIRD-02-1R8N operates across a wider temperature range (-40°C to 125°C) compared to the main part (-25°C to 85°C), providing enhanced thermal margin for demanding applications.

Physical Compatibility: Identical package geometry, mounting type, and form factor ensure direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the AIRD-02-1R8N be used as a direct replacement for the AIRD-02-1R8M in existing designs?

A: Yes. Both parts share identical electrical specifications (1.8 µH inductance, 11.4 A rating, 3 mOhm DCR, 68 A saturation current), core material (ferrite), shielding configuration (unshielded), and physical package (radial, vertical cylinder, 0.827" diameter). No circuit modifications or PCB layout changes are required.

Q: What is the significance of the inductance tolerance difference between ±20% and ±30%?

A: Inductance tolerance defines the acceptable range of actual inductance values around the nominal 1.8 µH specification. The AIRD-02-1R8M has a tighter tolerance (±20%), while the AIRD-02-1R8N has a wider tolerance (±30%). For most circuit applications, both tolerances are functionally equivalent. Applications requiring inductance values within ±20% should verify that the substitute part's actual measured value meets the design requirement.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical regulatory certifications: ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited moisture sensitivity). No compliance barriers exist for substitution in any market or application.

Q: Does the wider operating temperature range of the AIRD-02-1R8N affect compatibility?

A: No. The AIRD-02-1R8N's extended temperature range (-40°C to 125°C versus -25°C to 85°C) is a performance enhancement that provides additional thermal margin. It does not introduce incompatibility; it expands the operating envelope for applications subject to extreme temperature conditions.

Q: Are both parts available in the same through-hole package configuration?

A: Yes. Both parts are through-hole mounted components with identical radial, vertical cylinder packaging. PCB footprints, lead spacing, and mounting procedures are identical.

Q: Why is the AIRD-02-1R8M obsolete?

A: The AIRD-02-1R8M has been discontinued by the manufacturer. The AIRD-02-1R8N is the active production equivalent that replaces it in the product line.