Murata Power Solutions 18334C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 18334C is a 330 µH unshielded wirewound inductor rated for 730 mA with a maximum DC resistance of 335mOhm, designed for through-hole axial mounting. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The 1800 series inductor provides stable inductance performance across standard operating temperatures from 0°C to 70°C.

Substiute Parts

18334C

Murata Power Solutions Inc.In Stock: 93818334C Datasheet

Current PartRFQ

5900-331-RC

Bourns Inc.In Stock: 35495900-331-RC Datasheet

MFR RecommendedRFQ

AIAP-02-331K

Abracon LLCIn Stock: 1770AIAP-02-331K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 18334C must maintain the following core electrical parameters: 330 µH inductance value with ±10% tolerance, unshielded configuration, and through-hole axial mounting. The current rating and DC resistance are critical selection criteria. Substitute candidates must support the application's current requirements while maintaining acceptable DC resistance characteristics. All substitute parts listed are active or available products with established supply chains, addressing the obsolescence of the original component.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 5900-331-RC provides the lowest DC resistance at 285mOhm Max and the highest current rating at 1.2 A, with an extended operating temperature range of -55°C to 105°C. This part is RoHS3 compliant and actively manufactured. The Abracon AIAP-02-331K maintains current rating compatibility at 700 mA, closely matching the original 730 mA specification, and is RoHS3 compliant with active product status. Both substitute parts are REACH unaffected and classified as EAR99 for export control purposes, matching the regulatory profile of the original component.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 5900-331-RC replace the Murata 18334C in all applications?

A: The Bourns part maintains the same 330 µH inductance and ±10% tolerance with superior current handling at 1.2 A versus 730 mA. The lower DC resistance of 285mOhm Max compared to 335mOhm Max reduces power dissipation. The extended temperature range supports broader operating conditions. Physical dimensions differ slightly, requiring PCB layout verification.

Q: What are the key differences between the Abracon AIAP-02-331K and the original 18334C?

A: The Abracon part matches the original current rating at 700 mA, within the 730 mA specification. However, DC resistance is higher at 655mOhm Max versus 335mOhm Max, resulting in increased power dissipation. Physical dimensions are significantly smaller at 0.252" diameter versus 0.539" diameter, which may affect board layout and thermal management.

Q: Are there physical size constraints when substituting these parts?

A: Yes. The Murata 18334C measures 0.539" diameter by 0.719" length. The Bourns 5900-331-RC is 0.453" diameter by 0.900" length, and the Abracon AIAP-02-331K is 0.252" diameter by 0.551" length. PCB footprint and clearance requirements must be verified before substitution.

Q: Do all substitute parts meet the same compliance standards?

A: All parts are REACH unaffected and EAR99 classified. The Bourns and Abracon parts are RoHS3 compliant. The original Murata part does not specify RoHS status. Moisture sensitivity level is 1 (Unlimited) for both the original and Abracon parts; the Bourns part lists MSL as Not Applicable.