Murata Power Solutions 18224C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 18224C is a 220 µH unshielded wirewound inductor rated for 900 mA with a maximum DC resistance of 230mOhm, designed for through-hole axial mounting. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and procurement continuity. The 1800 series inductor serves applications requiring fixed inductance values with moderate current handling and low DC resistance characteristics.

Substiute Parts

18224C

Murata Power Solutions Inc.In Stock: 109918224C Datasheet

Current PartRFQ

5900-221-RC

Bourns Inc.In Stock: 11495900-221-RC Datasheet

MFR RecommendedRFQ

AIAP-02-221K

Abracon LLCIn Stock: 979AIAP-02-221K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 18224C must maintain the following core electrical and mechanical parameters to ensure functional equivalence:

• Inductance value of 220 µH with ±10% tolerance
• Unshielded construction
• Through-hole axial mounting configuration
• Current rating sufficient for 900 mA operation
• DC resistance compatible with circuit requirements

The substitute parts identified (5900-221-RC and AIAP-02-221K) meet these baseline criteria. However, variations in current rating, DC resistance, core material, and operating temperature range exist and must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts maintain the core electrical specifications (220 µH inductance, ±10% tolerance, unshielded axial configuration) required for functional replacement of the obsolete 18224C.

The Bourns 5900-221-RC offers superior current handling (1.5 A versus 900 mA) and lower DC resistance (185mOhm versus 230mOhm), with an extended operating temperature range (-55°C to 105°C). This part is ROHS3 compliant and carries active product status with established supply availability.

The Abracon AIAP-02-221K provides current rating (860 mA) closely aligned with the original specification and maintains ROHS3 compliance. However, the DC resistance (430mOhm Max) is significantly higher than the original part, which may impact circuit performance in applications sensitive to inductor losses.

Both substitute parts carry REACH Unaffected status and EAR99 ECCN classification, matching the regulatory profile of the original component.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 5900-221-RC directly replace the Murata 18224C?

A: Yes, from an electrical standpoint. The 5900-221-RC maintains the 220 µH inductance value and ±10% tolerance. The higher current rating (1.5 A) and lower DC resistance (185mOhm) represent improvements over the original specification. Physical dimensions differ slightly (0.453" Dia x 0.900" L versus 0.539" Dia x 0.719" L), requiring verification of board layout compatibility.

Q: What are the implications of the higher DC resistance in the Abracon AIAP-02-221K?

A: The AIAP-02-221K exhibits 430mOhm maximum DC resistance compared to 230mOhm in the original part. This increased resistance will generate additional heat dissipation and voltage drop across the inductor. Applications with strict power loss budgets or thermal constraints should evaluate this parameter against circuit requirements.

Q: Are there temperature range considerations for substitute selection?

A: The original 18224C operates from 0°C to 70°C. The Bourns 5900-221-RC extends this to -55°C to 105°C, while the Abracon AIAP-02-221K covers -40°C to 85°C. Selection depends on the application's thermal environment. For designs operating outside the original temperature range, the Bourns part provides the widest operational window.

Q: Do both substitutes meet regulatory requirements?

A: Both the Bourns 5900-221-RC and Abracon AIAP-02-221K are ROHS3 compliant and REACH Unaffected, matching the regulatory status of the original component. Both carry EAR99 ECCN classification.

Q: How do physical dimensions affect substitution?

A: The 18224C measures 0.539" Dia x 0.719" L. The Bourns 5900-221-RC is 0.453" Dia x 0.900" L (smaller diameter, greater length), while the Abracon AIAP-02-221K is 0.252" Dia x 0.551" L (significantly smaller overall). Board layout and mounting hole spacing must accommodate these dimensional variations.