Murata Power Solutions 18335C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 18335C is a 3.3 mH unshielded wirewound inductor rated for 220 mA with a maximum DC resistance of 4.6 Ohm, designed for through-hole axial mounting. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates across a temperature range of 0°C to 70°C and demonstrates a Q factor of 143 at 50 kHz with a self-resonant frequency of 800 kHz.

Substiute Parts

18335C

Murata Power Solutions Inc.In Stock: 104918335C Datasheet

Current PartRFQ

5900-332-RC

Bourns Inc.In Stock: 9245900-332-RC Datasheet

MFR RecommendedRFQ

AIAP-02-332K

Abracon LLCIn Stock: 885AIAP-02-332K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 18335C is determined by the following core parameters: inductance value (3.3 mH), tolerance (±10%), mounting type (through hole), and package configuration (axial). The identified substitute parts maintain these critical specifications while varying in secondary characteristics such as current rating, DC resistance, core material, and operating temperature range.

The two substitute parts are classified as follows:

5900-332-RC (Bourns Inc.): Maintains the 3.3 mH inductance and ±10% tolerance with improved current handling (390 mA versus 220 mA) and lower DC resistance (2.8 Ohm Max versus 4.6 Ohm Max). Features a drum core ferrite construction and extended operating temperature range (-55°C to 105°C). Product status is active.

AIAP-02-332K (Abracon LLC): Maintains the 3.3 mH inductance and ±10% tolerance with identical current rating (220 mA) to the original part. DC resistance is higher at 6.56 Ohm Max. Operates across -40°C to 85°C. Product status is active.

Parameter Comparison

Engineering Selection Recommendations

5900-332-RC (Bourns Inc.) is recommended for applications requiring enhanced current handling capacity and lower resistive losses. This part is actively manufactured and carries ROHS3 compliance certification. The extended operating temperature range (-55°C to 105°C) accommodates wider environmental conditions compared to the original 18335C specification. The lower DC resistance (2.8 Ohm Max) reduces power dissipation in current-limited applications.

AIAP-02-332K (Abracon LLC) is recommended for direct electrical equivalence with the original 18335C, maintaining identical current rating (220 mA) and similar DC resistance profile. This part is actively manufactured and carries ROHS3 compliance certification. The operating temperature range (-40°C to 85°C) provides moderate environmental coverage suitable for standard industrial applications.

Both substitute parts are actively produced, ensuring long-term availability and supply chain stability compared to the obsolete 18335C.

Frequently Asked Questions (FAQ)

Q: Can the 5900-332-RC replace the 18335C in all applications?

A: The 5900-332-RC maintains the critical inductance (3.3 mH) and tolerance (±10%) specifications. The higher current rating (390 mA versus 220 mA) and lower DC resistance (2.8 Ohm Max versus 4.6 Ohm Max) make it suitable for applications where the original part operates below its maximum current rating. Verify that the extended operating temperature range (-55°C to 105°C) aligns with your application requirements.

Q: What are the physical dimension differences between these parts?

A: The 18335C measures 0.539" diameter by 0.719" length (13.70mm x 18.25mm). The 5900-332-RC measures 0.453" diameter by 0.900" length (11.51mm x 22.86mm). The AIAP-02-332K measures 0.252" diameter by 0.551" length (6.40mm x 14.00mm). Physical space constraints in your PCB layout may limit substitution options.

Q: How do DC resistance differences affect circuit performance?

A: The 18335C specifies 4.6 Ohm Max DCR. The 5900-332-RC offers lower resistance at 2.8 Ohm Max, reducing power dissipation and heat generation. The AIAP-02-332K specifies higher resistance at 6.56 Ohm Max, increasing power dissipation. Select based on your circuit's current levels and thermal management requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 18335C is RoHS Compliant. Both substitute parts carry ROHS3 Compliant certification, meeting current regulatory requirements for hazardous substance restrictions.

Q: What is the difference between wirewound and drum core construction?

A: The 18335C and AIAP-02-332K use wirewound construction. The 5900-332-RC uses drum core wirewound construction with ferrite core material. Both construction types maintain the specified inductance value and tolerance. Drum core construction typically offers improved thermal characteristics and higher current saturation ratings.