AISC-1812H-222K-T Equivalent & Substitute Parts

Part Overview

The AISC-1812H-222K-T is a 2.2 mH unshielded drum core wirewound inductor manufactured by Abracon LLC, rated for 30 mA maximum current with 65 Ohm maximum DC resistance. This component is packaged in the 1812 (4532 Metric) surface mount form factor and operates across the temperature range of -25°C to 85°C. The part is currently listed as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

AISC-1812H-222K-T

Abracon LLCIn Stock: 1131AISC-1812H-222K-T Datasheet

Current PartRFQ

LQH43NN222K03L

Murata ElectronicsIn Stock: 2274LQH43NN222K03L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AISC-1812H-222K-T is determined by the following critical parameters:

• Inductance value: 2.2 mH with ±10% tolerance
• Current rating: 30 mA minimum
• Package / Case: 1812 (4532 Metric) surface mount form factor
• Core material: Ferrite, unshielded drum core construction
• Self resonant frequency: 1.3 MHz
• RoHS3 compliance and MSL 1 rating

The substitute part LQH43NN222K03L from Murata Electronics meets all primary electrical and mechanical requirements. While DC resistance differs (50 Ohm Max versus 65 Ohm Max), this represents an improvement in performance characteristics and remains within acceptable substitution parameters for this inductor category.

Parameter Comparison

Engineering Selection Recommendations

The LQH43NN222K03L from Murata Electronics is the direct equivalent substitute for the AISC-1812H-222K-T. Both components maintain identical inductance values, current ratings, package dimensions, and self-resonant frequency specifications. The Murata part demonstrates superior DC resistance performance at 50 Ohm Max compared to the Abracon specification of 65 Ohm Max, which reduces power dissipation in the inductor.

Both parts carry ROHS3 compliance certification and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols. The Murata substitute supports an extended lower operating temperature limit of -40°C compared to the Abracon part's -25°C minimum, providing broader thermal operating range coverage.

Frequently Asked Questions (FAQ)

Q: Can the LQH43NN222K03L replace the AISC-1812H-222K-T in existing designs?

A: Yes. Both inductors share identical inductance (2.2 mH), current rating (30 mA), package form factor (1812 / 4532 Metric), and core construction (ferrite, unshielded drum core). Physical dimensions and mounting characteristics are equivalent, enabling direct PCB layout compatibility.

Q: What is the significance of the DC resistance difference?

A: The LQH43NN222K03L exhibits lower DC resistance (50 Ohm Max) compared to the AISC-1812H-222K-T (65 Ohm Max). Lower resistance reduces resistive losses and heat generation during operation, representing an improvement in electrical performance for the same inductance specification.

Q: Are there packaging differences between these parts?

A: The AISC-1812H-222K-T is supplied in Tape & Reel (TR) packaging, while the LQH43NN222K03L is available in Cut Tape (CT) & Digi-Reel® packaging. Both formats are standard surface mount component delivery methods compatible with automated assembly equipment.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the AISC-1812H-222K-T and LQH43NN222K03L are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings. Both are classified under ECCN EAR99 for export control purposes.

Q: What is the operating temperature range difference?

A: The AISC-1812H-222K-T operates from -25°C to 85°C, while the LQH43NN222K03L operates from -40°C to 85°C. The Murata part provides extended low-temperature capability, beneficial for applications requiring operation in cold environments.