AISC-0402F-18NJ-T Equivalent & Substitute Parts

Part Overview

The AISC-0402F-18NJ-T is an 18 nH unshielded drum core wirewound inductor manufactured by Abracon LLC, rated for 1.4 A with a maximum DC resistance of 46 mOhm. This component is classified as obsolete, necessitating identification of suitable substitute parts for ongoing design requirements and procurement needs. The substitute part AISC-0402HP-18NJ-T provides equivalent inductance specifications with modified electrical characteristics suitable for alternative application requirements.

Substiute Parts

AISC-0402F-18NJ-T

Abracon LLCIn Stock: 830AISC-0402F-18NJ-T Datasheet

Current PartRFQ

AISC-0402HP-18NJ-T

Abracon LLCIn Stock: 654AISC-0402HP-18NJ-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AISC-0402F-18NJ-T is determined by the following critical parameters:

• Inductance Value: Must remain 18 nH with ±5% tolerance
• Inductance Tolerance: ±5% specification must be maintained
• Shielding Configuration: Unshielded topology must be preserved
• Mounting Type: Surface mount configuration required
• Package Footprint: 0402 form factor compatibility
• RoHS Compliance: ROHS3 Compliant status required

The substitute part AISC-0402HP-18NJ-T maintains the core inductance specification and unshielded drum core wirewound topology. Variations in current rating, DC resistance, core material, and operating temperature range are permissible when the application requirements accommodate these differences.

Parameter Comparison

Engineering Selection Recommendations

The AISC-0402HP-18NJ-T is the manufacturer-recommended substitute for the obsolete AISC-0402F-18NJ-T. Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent parts.

Selection of the substitute part requires verification that the application circuit accommodates the following parameter differences:

• Current rating reduced from 1.4 A to 850 mA
• DC resistance increased from 46 mOhm Max to 140 mOhm Max
• Core material change from ferrite to ceramic
• Operating temperature range extended from -40°C ~ 85°C to -40°C ~ 125°C
• Package standardization from nonstandard 0402 to 0402 (1005 Metric)

The active product status of AISC-0402HP-18NJ-T ensures ongoing availability and supply chain continuity compared to the obsolete main part.

Frequently Asked Questions (FAQ)

Q: Can AISC-0402HP-18NJ-T be used as a direct replacement for AISC-0402F-18NJ-T?

A: Direct substitution is possible when the application circuit operates at currents not exceeding 850 mA and tolerates the increased DC resistance of 140 mOhm Max. The identical 18 nH inductance value and ±5% tolerance ensure equivalent inductance performance. Verification of current requirements and thermal dissipation characteristics is necessary before implementation.

Q: What are the key differences between these two inductors?

A: The primary differences are current rating (1.4 A vs. 850 mA), DC resistance (46 mOhm vs. 140 mOhm), core material (ferrite vs. ceramic), and operating temperature range (-40°C ~ 85°C vs. -40°C ~ 125°C). Both maintain identical inductance specifications and unshielded drum core wirewound topology.

Q: Are both parts compatible with the same PCB footprint?

A: Both components use 0402 surface mount packages. The main part specifies a nonstandard 0402 package, while the substitute uses the standardized 0402 (1005 Metric) package. Physical dimensions are similar (main: 1.10mm x 0.60mm; substitute: 1.00mm x 0.55mm), though PCB layout verification is recommended.

Q: Do both parts meet the same compliance standards?

A: Yes. Both AISC-0402F-18NJ-T and AISC-0402HP-18NJ-T are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (Unlimited moisture sensitivity level).

Q: Why is the substitute part recommended despite lower current rating?

A: The AISC-0402HP-18NJ-T is the manufacturer-designated substitute and maintains active product status, ensuring supply availability. The lower current rating is acceptable for applications operating below 850 mA. The extended operating temperature range (-40°C ~ 125°C) provides additional thermal margin for certain applications.