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Murata Electronics LQH32CN4R7M33L — Inductors & Chokes

Murata LQH32CN4R7M33L 4.7 µH Drum Core Inductor, 650 mA

MPNLQH32CN4R7M33L
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Murata Electronics LQH32 series, Drum Core Wirewound Inductor, 4.7 µH, ±20%, 650 mA, 195 mOhm DCR, 43 MHz SRF, 1210 (3225 Metric), Unshielded, LQH32CN4R7M33L.

$0.3100Ref. price · indicative, final on quote
Murata Electronics LQH32CN4R7M33L datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LQH32CN4R7M33L specifications
ParameterValue
TypeDrum Core, Wirewound
SeriesLQH32
MountingSurface Mount
Current rating650 mA
Frequency - self resonant43MHz
Inductance frequency - test1 MHz
Operating temperature-40°C~85°C
Material - coreFerrite
Size (Dimension)0.126\" L x 0.098\" W (3.20mm x 2.50mm)
Height - seated0.087\" (2.20mm)
PackageTape & Reel (TR); Cut Tape (CT)
ShieldingUnshielded
Tolerance±20%
Inductance4.7 µH
CaseNonstandard
DC resistance195mOhm Max

Product details

4.7 µH drum-core selection for DC-DC output filtering

The LQH32CN4R7M33L is a Murata LQH32-series drum-core wirewound inductor rated at 4.7 µH with a ±20% tolerance and a 650 mA DC current rating. Unshielded construction means the magnetic field radiates; keep sensitive traces and low-impedance loops at least one part width away to avoid coupling into the signal path.

Frequency limit and bias current

Self-resonant frequency of 43 MHz marks the upper bound where the inductor's impedance peaks before the parasitic capacitance dominates — stay below 10–15 MHz for a predictable inductive response in a buck converter output filter. Inductance is tested at 1 MHz; the ferrite core material saturates gradually, so the 650 mA rating is the DC bias current at which inductance drops by a defined percentage — derate for ripple current in the application.

Frequently asked questions

What is the self-resonant frequency of LQH32CN4R7M33L?

The self-resonant frequency is 43 MHz. Above this frequency the inductor behaves capacitively, so it is best used well below that limit for power filtering.

Is LQH32CN4R7M33L shielded or unshielded?

It is unshielded. The magnetic field radiates from the drum core, so PCB layout should keep sensitive traces and other inductors at a distance to avoid coupling.