Equivalent & Substitute Parts for 18R335C

Part Overview

The 18R335C is a 3.3 mH unshielded wirewound inductor manufactured by Murata Power Solutions Inc., rated for 220 mA maximum current with 4.6Ohm maximum DC resistance. This through-hole radial component operates across a temperature range of 0°C to 70°C and is classified as Active product status with ROHS3 compliance. Substitute parts are identified when equivalent inductance values, current ratings, and mechanical compatibility can be maintained within specified tolerance ranges.

Substiute Parts

18R335C

Murata Power Solutions Inc.In Stock: 88418R335C Datasheet

Current PartRFQ

RLB1314-332KL

Bourns Inc.In Stock: 3194RLB1314-332KL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The RLB1314-332KL from Bourns Inc. qualifies as a substitute based on the following alignment of critical parameters:

• Inductance value matches at 3.3 mH with identical ±10% tolerance
• Unshielded configuration matches the original design
• Through-hole radial mounting type is identical
• Package case type (Radial, Vertical Cylinder) is identical
• ROHS3 compliance status matches
• Current rating of 170 mA is lower than the 220 mA specification of the main part, requiring application-level verification that the substitute's current capacity is sufficient for the intended circuit
• DC resistance of 3.7Ohm is marginally higher than the 4.6Ohm maximum of the main part, within acceptable engineering tolerance for this component category

Parameter Comparison

Engineering Selection Recommendations

Both the 18R335C and RLB1314-332KL maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for equivalent component selection. The RLB1314-332KL offers an extended operating temperature range (-40°C to 105°C) compared to the 18R335C (0°C to 70°C), providing broader thermal operational capability. The primary consideration for substitution is the current rating differential: the RLB1314-332KL is rated for 170 mA versus the 18R335C at 220 mA. Circuit design parameters must confirm that the substitute's current capacity is appropriate for the application. The marginal increase in DC resistance (3.7Ohm versus 4.6Ohm) is within acceptable variance for this inductor category.

Frequently Asked Questions (FAQ)

Q: Can the RLB1314-332KL directly replace the 18R335C in all applications?

A: Direct substitution requires confirmation that circuit current demands do not exceed 170 mA. The RLB1314-332KL's lower current rating is the primary limiting factor. If the application operates below 170 mA, substitution is feasible based on matching inductance, tolerance, and package specifications.

Q: How do the physical dimensions compare between these parts?

A: The 18R335C measures 0.539" diameter (13.70mm) with 0.626" seated height (15.90mm). The RLB1314-332KL measures 0.461" diameter (11.70mm) with 0.512" seated height (13.00mm). The substitute is physically smaller, which may affect PCB layout considerations.

Q: What is the significance of the core material difference?

A: The 18R335C uses an unspecified core material, while the RLB1314-332KL uses a ferrite drum core. Both are unshielded wirewound inductors with identical inductance values and tolerances. The ferrite core in the substitute may provide different frequency response characteristics, but inductance value and tolerance remain equivalent.

Q: Are both parts suitable for the same operating temperature range?

A: The 18R335C operates from 0°C to 70°C, while the RLB1314-332KL operates from -40°C to 105°C. If the application requires operation below 0°C or above 70°C, the RLB1314-332KL provides extended thermal capability. For applications within 0°C to 70°C, both parts are suitable.

Q: What compliance certifications apply to both parts?

A: Both the 18R335C and RLB1314-332KL are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component use in regulated markets.