AISC-1812H-2R2N-T Equivalent & Substitute Parts

Part Overview

The AISC-1812H-2R2N-T is a 2.2 µH unshielded drum core wirewound inductor manufactured by Abracon LLC in a 1812 (4532 Metric) surface mount package. This component is rated for 900 mA continuous current with a maximum DC resistance of 110mOhm and operates across the temperature range of -25°C to 85°C. The part is currently listed as obsolete, making identification of equivalent alternatives essential for ongoing design support and procurement continuity.

Substiute Parts

AISC-1812H-2R2N-T

Abracon LLCIn Stock: 765AISC-1812H-2R2N-T Datasheet

Current PartRFQ

LQH43CN2R2M33L

Murata ElectronicsIn Stock: 1794LQH43CN2R2M33L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AISC-1812H-2R2N-T is determined by the following critical parameters:

• Inductance Value: Must be 2.2 µH (tolerance variations acceptable within engineering design margins)
• Package / Case: Must be 1812 (4532 Metric) for mechanical and electrical compatibility
• Core Type: Ferrite, unshielded drum core construction
• Mounting Type: Surface mount configuration
• Current Rating: Must meet or exceed 900 mA continuous current requirement
• DC Resistance: Must not exceed 110mOhm maximum
• Operating Temperature Range: Must support -25°C ~ 85°C minimum
• Compliance: RoHS3 compliance required

The LQH43CN2R2M33L from Murata Electronics meets all substitution criteria and is identified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

The LQH43CN2R2M33L is a qualified substitute for the AISC-1812H-2R2N-T based on the following engineering criteria:

• Mechanical Compatibility: Identical 1812 (4532 Metric) package dimensions and height ensure direct PCB footprint compatibility without layout modifications.
• Electrical Performance: The substitute meets all minimum electrical requirements with improved specifications in current rating (2.1 A vs. 900 mA) and lower DC resistance (61mOhm vs. 110mOhm), providing enhanced performance margin.
• Inductance Match: Both components specify 2.2 µH inductance at 1 MHz test frequency, ensuring functional equivalence in circuit operation.
• Compliance: Both components maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status, satisfying regulatory requirements.
• Temperature Range: The substitute supports an extended operating temperature range (-40°C ~ 85°C vs. -25°C ~ 85°C), providing additional thermal margin.
• Availability Consideration: Both components are currently unavailable through standard distribution channels. The substitute shows higher inventory availability (1697 Pcs vs. 707 Pcs) at the time of data collection.

Frequently Asked Questions (FAQ)

Q: Can the LQH43CN2R2M33L be used as a direct replacement for the AISC-1812H-2R2N-T?

A: Yes. Both components share identical inductance values (2.2 µH), package dimensions (1812 / 4532 Metric), core construction (ferrite unshielded drum core), and mounting type (surface mount). The substitute meets or exceeds all electrical specifications of the original part.

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

A: The primary differences are manufacturer (Abracon vs. Murata), current rating (900 mA vs. 2.1 A), DC resistance (110mOhm vs. 61mOhm), inductance tolerance (±30% vs. ±20%), and operating temperature range (-25°C~85°C vs. -40°C~85°C). The substitute provides superior electrical performance in all parameters.

Q: Will the substitute fit the existing PCB footprint?

A: Yes. Both components use the identical 1812 (4532 Metric) package with dimensions of 0.177" L x 0.126" W (4.50mm x 3.20mm) and maximum seated height of 0.110" (2.80mm). No PCB layout modifications are required.

Q: Are there any compliance or regulatory concerns with substitution?

A: No. Both components are ROHS3 compliant, carry MSL Level 1 (unlimited moisture sensitivity), and are REACH unaffected. Substitution does not introduce compliance risks.

Q: What is the self-resonant frequency difference between these parts?

A: The AISC-1812H-2R2N-T specifies 62MHz while the LQH43CN2R2M33L specifies 60MHz. This 2MHz difference is negligible for most circuit applications and does not affect functional equivalence.

Q: Can I use the substitute in high-current applications?

A: The LQH43CN2R2M33L is rated for 2.1 A continuous current, which exceeds the original part's 900 mA rating by more than 2x. It is suitable for applications requiring higher current capacity while maintaining the same inductance value and package form factor.