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Murata Electronics LQH3NPH330MMEL — Inductors & Chokes

Murata LQH3NPH330MMEL 33 µH Shielded Inductor, 760 mA

MPNLQH3NPH330MMEL
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Murata Electronics LQH3 series, Drum Core Wirewound Inductor, Shielded, 33 µH, ±20%, 760 mA, 660mOhm Max DC Resistance, Surface Mount, 1212 (3030 Metric), AEC-Q200.

$0.3900Ref. price · indicative, final on quote
Murata Electronics LQH3NPH330MMEL datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LQH3NPH330MMEL specifications
ParameterValue
TypeDrum Core, Wirewound
SeriesLQH3
MountingSurface Mount
Current rating760 mA
Current - saturation440mA
Frequency - self resonant8MHz
Inductance frequency - test1 MHz
Operating temperature-40°C~125°C
Material - coreFerrite
Size (Dimension)0.118\" L x 0.118\" W (3.00mm x 3.00mm)
Height - seated0.059\" (1.50mm)
PackageTape & Reel (TR); Cut Tape (CT)
RatingsAEC-Q200
ShieldingShielded
Tolerance±20%
Inductance33 µH
Case1212 (3030 Metric)
DC resistance660mOhm Max

Product details

33 µH shielded inductor for DC-DC filtering

The Murata LQH3NPH330MMEL is a 33 µH drum-core wirewound inductor in the LQH3 series, shielded and rated for 760 mA continuous current. The 660 mOhm max DCR sets the conduction loss — at full rated current the I²R loss is about 0.38 W, which the 1212 (3030 Metric) package dissipates through the board copper. The 440 mA saturation current (Isat) is the hard ceiling: above it the inductance drops off, so a DC-DC converter drawing 500 mA steady-state needs a higher Isat part. AEC-Q200 qualified, so it passes the automotive-grade stress tests — thermal shock, moisture resistance, and mechanical shock per the standard.

Package and rework reality

Shielded construction means the magnetic field stays mostly inside the core — adjacent traces or a nearby inductor on the same rail won't couple parasitically. For a multi-phase buck converter, this lets you place the inductors closer together without cross-talk.

Frequently asked questions

What does the 440 mA saturation current mean for my circuit?

The 440 mA Isat is the DC bias at which inductance drops by 30% typically. If your load draws 500 mA steady-state, the effective inductance falls below 23 µH — the ripple current in a buck converter increases, and the output voltage ripple rises. Choose a higher-current-rated part for that margin.

What is the self-resonant frequency of this inductor?

The self-resonant frequency is 8 MHz. Above that frequency the inductor behaves capacitively, so it is not suitable for filtering above roughly 2-3 MHz in a switching converter.