AISC-0402F-48NM-T Equivalent & Substitute Parts

Part Overview

The AISC-0402F-48NM-T is a 48 nH unshielded drum core wirewound inductor manufactured by Abracon LLC in a 0402 (1005 Metric) surface mount package. This component is designed for high-frequency applications requiring low inductance values with a current rating of 1.1 A and maximum DC resistance of 78 mOhm. The part is classified as obsolete, necessitating identification of equivalent substitute components that maintain functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

AISC-0402F-48NM-T

Abracon LLCIn Stock: 775AISC-0402F-48NM-T Datasheet

Current PartRFQ

AISC-0402HP-47NJ-T

Abracon LLCIn Stock: 921AISC-0402HP-47NJ-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AISC-0402F-48NM-T is determined by the following critical parameters:

Inductance Compatibility: The substitute part AISC-0402HP-47NJ-T provides 47 nH inductance, which falls within the tolerance band of the original 48 nH specification (±20% tolerance = 38.4 nH to 57.6 nH range). This 1 nH variance is acceptable within the specified tolerance.

Package and Mounting: Both parts utilize identical 0402 (1005 Metric) surface mount packaging, ensuring mechanical and footprint compatibility on printed circuit boards.

Current Rating Consideration: The substitute part is rated for 420 mA maximum current, which is lower than the original part's 1.1 A rating. Selection of this substitute requires verification that circuit current demands do not exceed 420 mA.

DC Resistance: The substitute part exhibits 550 mOhm maximum DC resistance, compared to the original 78 mOhm maximum. This represents a significant increase in resistive losses and must be evaluated against circuit performance requirements.

Compliance and Environmental: Both parts maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and REACH unaffected status, ensuring regulatory compatibility.

Parameter Comparison

Engineering Selection Recommendations

The AISC-0402HP-47NJ-T serves as an active substitute for the obsolete AISC-0402F-48NM-T based on the following engineering criteria:

Product Status: The substitute part maintains active product status with Abracon LLC, ensuring continued availability and supply chain reliability compared to the obsolete main part.

Regulatory Compliance: Both components satisfy ROHS3 compliance requirements and maintain REACH unaffected status, supporting equivalent regulatory positioning in end-use applications.

Mechanical Compatibility: Identical 0402 (1005 Metric) surface mount packaging ensures direct footprint compatibility without PCB redesign.

Electrical Substitution Limitations: Selection of the AISC-0402HP-47NJ-T requires circuit-level evaluation of two critical parameters:

1. Current Capacity: The substitute part maximum current rating of 420 mA is substantially lower than the original 1.1 A specification. Applications requiring current levels exceeding 420 mA cannot use this substitute without risk of component saturation or thermal stress.

2. DC Resistance: The substitute part exhibits 550 mOhm maximum DC resistance versus 78 mOhm for the original part. This 7-fold increase in resistive losses will generate additional heat dissipation and voltage drop across the inductor, affecting circuit efficiency and performance characteristics.

Inductance Tolerance: The substitute part provides superior inductance tolerance (±5% versus ±20%), offering improved circuit performance stability in applications sensitive to inductance variation.

Frequently Asked Questions (FAQ)

Q: Can the AISC-0402HP-47NJ-T directly replace the AISC-0402F-48NM-T in all applications?

A: Direct replacement is limited by current rating and DC resistance differences. The substitute part is suitable only for applications where circuit current does not exceed 420 mA and where the increased DC resistance of 550 mOhm does not compromise circuit performance or thermal management requirements.

Q: What is the inductance difference between these two parts?

A: The main part provides 48 nH while the substitute provides 47 nH, representing a 1 nH difference. This 2.1% variance falls within the original part's ±20% tolerance specification and is generally acceptable for most RF and high-frequency applications.

Q: Are the physical dimensions identical?

A: Both parts use the 0402 (1005 Metric) surface mount package. The main part dimensions are 0.043" L x 0.024" W x 0.028" H maximum, while the substitute measures 0.039" L x 0.022" W x 0.024" H maximum. The substitute is slightly smaller but maintains full footprint compatibility on standard 0402 PCB pads.

Q: What is the impact of the different core materials?

A: The main part uses ferrite core material while the substitute uses ceramic core material. This material difference contributes to the higher DC resistance in the substitute part and different frequency response characteristics, including the higher self-resonant frequency of 2.4 GHz versus 1.4 GHz.

Q: Does the substitute part support the same operating temperature range?

A: The substitute part supports an extended operating temperature range of -40°C to 125°C compared to the main part's -40°C to 85°C. This provides additional thermal margin in applications operating at elevated temperatures.

Q: Are both parts equally available for procurement?

A: The main part is classified as obsolete with limited remaining inventory (757 pieces). The substitute part maintains active product status with current inventory of 868 pieces, ensuring superior long-term availability and supply chain continuity.

Q: What compliance certifications apply to both parts?

A: Both components are ROHS3 compliant, maintain MSL 1 (unlimited moisture sensitivity level), and are REACH unaffected. Both carry EAR99 export classification and HTSUS code 8504.50.8000, supporting equivalent regulatory positioning.