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Product Detailed Parameters
- Description：FIXED IND 18UH 3.2A 40 MOHM SMD
- Series：-
- Mfr：Murata Electronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Drum Core, Wirewound
- Material - Core：Ferrite
- Inductance：18 µH
- Tolerance：±20%
- Current Rating (Amps)：3.2 A
- Current - Saturation (Isat)：4.1A
- Shielding：Shielded
- DC Resistance (DCR)：40mOhm Max
- Q @ Freq：-
- Frequency - Self Resonant：-
- Ratings：-
- Operating Temperature：-40°C ~ 85°C
- Inductance Frequency - Test：100 kHz
- Mounting Type：Surface Mount
- Package / Case：Nonstandard
- Supplier Device Package：-
- Size / Dimension：0.504" L x 0.504" W (12.80mm x 12.80mm)
- Height - Seated (Max)：0.268" (6.80mm)
- Features：-
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Overview
The Murata #B953AS-180M=P3 is a shielded drum core, wirewound power inductor designed for surface mount applications. It features an inductance of 18 µH with a tolerance of ±20%. The component supports a maximum DC current of 3.2 A and a saturation current of 4.1 A. Its maximum DC resistance is 40 mΩ. The device operates within a temperature range of -40°C to +85°C and utilizes ferrite core material. Physical dimensions are 12.80 mm x 12.80 mm x 6.80 mm.
Feature Summary
- Shielded drum core construction minimizes electromagnetic interference
- High current handling capability suitable for power conversion circuits
- Low DC resistance reduces power loss during operation
Applications
- DC-DC converter power stages
- Power line filtering
- Energy storage in switching regulators
Procurement Notes
Verify the End-of-Life status before finalizing designs. The manufacturer has scheduled this part for discontinuation. Confirm availability through authorized distributors and check for valid replacement components that meet identical electrical and mechanical specifications to ensure long-term supply chain stability.
Selection Notes
Select this component when high current density and low impedance are required in compact spaces. The 18 µH value suits specific frequency ranges in power management. Ensure the PCB footprint accommodates the 12.80 mm square outline and 6.80 mm height constraints for proper assembly and thermal performance.
Part Context
This inductor belongs to the B953AS series from Murata Electronics. The series offers various inductance values for different power requirements. The =P3 suffix indicates specific packaging or manufacturing details defined by the manufacturer. The component is classified as a fixed power inductor for surface mount technology.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Due to the End-of-Life status, engineers must identify equivalent components based on matching inductance, current ratings, and physical dimensions from other manufacturers or alternative Murata series.
