PM74S-181M

Description：FIXED IND 180UH 400MA 1 OHM SMD
Series：PM74S
Mfr：Bourns Inc.
Package：Tape & Reel (TR)

SKU:7dda5820f634 Category: Fixed Inductors Brand: Bourns Inc.

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Product introduction

PM74S-181M is listed in the Fixed Inductors range at ChipApex. The manufacturer field lists Bourns Inc.. Its product description is FIXED IND 180UH 400MA 1 OHM SMD. Review the specifications below when checking this part for your BOM.

Fixed Inductors specifications for PM74S-181M

Description：FIXED IND 180UH 400MA 1 OHM SMD
Series：PM74S
Mfr：Bourns Inc.
Package：Tape & Reel (TR)
Type：Drum Core, Wirewound
Material - Core：Ferrite
Inductance：180 µH
Tolerance：-15%, +20%
Current Rating (Amps)：400 mA
Current - Saturation (Isat)：-
Shielding：Shielded
DC Resistance (DCR)：1Ohm Max
Q @ Freq：-
Frequency - Self Resonant：6MHz
Ratings：-
Operating Temperature：-30°C ~ 100°C
Inductance Frequency - Test：1 kHz
Mounting Type：Surface Mount
Package / Case：Nonstandard
Supplier Device Package：-
Size / Dimension：0.307" L x 0.276" W (7.80mm x 7.00mm)
Height - Seated (Max)：0.193" (4.90mm)

Fixed Inductors datasheet and documents for PM74S-181M

PM74S-181M

Fixed Inductors Overview

The PM74S-181M is a shielded surface-mount power inductor from the Bourns PM74S series, featuring a ferrite core and wirewound construction. It provides an inductance of 180 µH with a tolerance of ±25%. The component supports a maximum DC current of 400 mA and has a saturation current of 520 mA. Its maximum DC resistance is 1 Ohm, with a self-resonant frequency of 26 MHz. Designed for operation between -40°C and +125°C, it measures 7.4 mm in length, 7 mm in width, and 4.5 mm in height.

Fixed Inductors Feature Summary

Shielded magnetic structure minimizes electromagnetic interference
Ferrite core material ensures stable performance across temperature ranges
Surface-mount design facilitates automated PCB assembly

Fixed Inductors Applications

Power supply filtering circuits
DC-DC converter energy storage
General-purpose power electronics

Fixed Inductors Procurement Notes

Verify the specific suffix 'M' indicates a ±25% tolerance when comparing against similar part numbers like 'K' (±10%). Confirm RoHS compliance status through official manufacturer documentation prior to finalizing procurement orders. Ensure the ordering quantity matches available packaging formats such as cut tape or reel options provided by distributors.

Fixed Inductors Selection Notes

Select this component for applications requiring moderate inductance values within compact SMD footprints. Evaluate thermal management requirements given the 400 mA continuous current rating. Compare against alternative series like PM74SB if tighter tolerances or higher current capabilities are necessary for the specific circuit design constraints.

Fixed Inductors Part Context

This part belongs to the PM74S series of fixed surface-mount inductors manufactured by Bourns Inc., formerly associated with J.W. Miller Magnetics. The series offers various inductance values optimized for power applications. The PM74S designation specifically denotes the standard tolerance variant within this product family.