AISC-1812H-470K-T Equivalent & Substitute Parts

Part Overview

The AISC-1812H-470K-T is a 47 µH unshielded drum core wirewound inductor manufactured by Abracon LLC, rated for 280 mA with a maximum DC resistance of 1.37Ohm. This surface mount component is packaged in the 1812 (4532 Metric) form factor and operates across the temperature range of -25°C to 85°C. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity.

Substiute Parts

AISC-1812H-470K-T

Abracon LLCIn Stock: 826AISC-1812H-470K-T Datasheet

Current PartRFQ

LQH43CN470K03L

Murata ElectronicsIn Stock: 16004LQH43CN470K03L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AISC-1812H-470K-T is determined by strict alignment of the following electrical and mechanical parameters:

• Inductance value: 47 µH with ±10% tolerance
• Current rating: 280 mA minimum
• Package form factor: 1812 (4532 Metric) surface mount
• Core type: Ferrite, unshielded drum core wirewound construction
• DC resistance: Must not exceed 1.37Ohm maximum
• Self-resonant frequency: 10MHz
• Environmental compliance: ROHS3 compliant, MSL 1

The substitute part LQH43CN470K03L meets all critical substitution criteria. While minor variations exist in operating temperature range and inductance test frequency, these do not preclude functional equivalence in applications designed for the AISC-1812H-470K-T.

Parameter Comparison

Engineering Selection Recommendations

The LQH43CN470K03L from Murata Electronics is a direct functional equivalent to the obsolete AISC-1812H-470K-T. Both components share identical inductance, current rating, package dimensions, and core construction. The substitute part offers a lower maximum DC resistance (1.1Ohm versus 1.37Ohm), which provides improved performance characteristics in applications sensitive to resistive losses.

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The substitute part's extended lower operating temperature limit (-40°C versus -25°C) provides additional thermal margin for demanding environments. Inventory availability of the LQH43CN470K03L is substantially higher, supporting production continuity and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the LQH43CN470K03L be used as a direct replacement for the AISC-1812H-470K-T?

A: Yes. Both inductors share identical inductance (47 µH), current rating (280 mA), package form factor (1812), and core construction (ferrite, unshielded). Physical dimensions and mounting characteristics are identical, enabling direct PCB substitution without layout modifications.

Q: What is the significance of the lower DC resistance in the substitute part?

A: The LQH43CN470K03L exhibits a maximum DC resistance of 1.1Ohm compared to 1.37Ohm in the AISC-1812H-470K-T. Lower DC resistance reduces resistive losses and heat generation in the inductor, improving efficiency in power conversion and filtering applications.

Q: Are there temperature range differences between these parts?

A: The substitute part operates from -40°C to 85°C, while the main part operates from -25°C to 85°C. The extended lower temperature specification of the substitute provides additional operational margin for applications in cold environments.

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

A: Yes. Both the AISC-1812H-470K-T and LQH43CN470K03L are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the difference in inductance test frequency between these parts?

A: The main part specifies inductance testing at 100 kHz, while the substitute part specifies testing at 1 MHz. Both parts maintain the same 47 µH inductance value with ±10% tolerance across their respective test frequencies.