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LQM18PN4R7MFRL — 4.7µH

Murata · Chip Coil (Chip Inductor) · Consumer & Industrial Equipment
0603 Murata LQM18PN_FR RoHS Power
Inductance
4.7µH
±20%
Rated Current
620mA
ΔT ≤ 40°C
DCR
0.44Ω
±20%
SRF
40MHz
minimum
Q Factor
—
—
Mouser
$0.17
55,299 in stock

Electrical Characteristics

Inductance4.7µH ±20%
Q Factor (min)—
DC Resistance (typ)0.44Ω
DC Resistance (max)0.55Ω
Self-Resonant Frequency≥40 MHz
Rated Current620mA
Rated Current ConditionΔT ≤ 40°C rise
Test Frequency1 MHz
Test EquipmentKeysight 4294A

Operating Conditions

Operating Temp−40°C to +85°C
Storage Temp−55°C to +125°C
Storage Humidity15% to 85% RH
Shelf Life6 months
Solder CompatibilitySn-3.0Ag-0.5Cu
Cleaning Temp≤60°C (40°C for IPA)

Package & Dimensions

Top View ← polarity 1.6 ± 0.15 0.80 ± 0.15 0.4 ± 0.2 Side View 0.80 ± 0.15 0603 (1608 metric) Mass: 0.005g

Recommended Land Pattern

Pad Width (a)0.7mm
Pad-to-Pad (b) — Reflow2.0 mm
Pad-to-Pad (b) — Flow2.5 mm
Pad Height (c)0.7mm
Solder Paste Thickness100–150 µm

Impedance Behavior

Impedance vs. Frequency (characteristic shape for 4.7µH ferrite inductor)

SRF: 40 MHz Inductive Capacitive Usable range (≤ SRF) 0 Ω 295 Ω 738 Ω 1 kΩ 1.5 kΩ |Z| impedance 1M 10M 50M 500M 1G
Impedance peaks at the self-resonant frequency (SRF). Below SRF the part behaves as an inductor; above SRF it's capacitive. Use at ≤ ⅓ SRF for predictable inductive behavior.

Reflow Soldering Profile

Standard Reflow Profile

Pre-heat Peak 150°C 220°C 245°C 260°C limit 90s ± 30s 30–60s >220°C 0s ~60s ~150s ~200s ~240s ~360s Standard Limit
PhaseStandardLimit
Pre-heating150–180°C, 90s ± 30sSame
HeatingAbove 220°C, 30–60sAbove 230°C, 60s max
Peak Temperature245°C ± 3°C260°C, 10s
Cycles2 times max

Environmental & Reliability

Heat Resistance
No damage, ΔL ≤ ±30%
85°C, 1000h
Cold Resistance
No damage, ΔL ≤ ±30%
−40°C, 1000h
Humidity
No damage, ΔL ≤ ±30%
70°C, 90–95% RH, 1000h
Temperature Cycle
No damage, ΔL ≤ ±30%
−40°C ↔ +85°C, 100 cycles
Soldering Heat
No damage, ΔL ≤ ±30%
270±5°C, 10s immersion
Solderability
≥90% wetting
240±5°C, 3±1s, Sn-3.0Ag-0.5Cu
Vibration
No damage
10–2000Hz, 245 m/s², 4h×3 axes (12h total)
Mechanical Shear
No damage
10N, 5s, parallel to PCB

Symbol, Footprint & 3D Model

Schematic Symbol
Footprint (0603) — with solder jetting layout
3D Model (interactive)
Click & drag to rotate · Scroll to zoom
Export: KiCad Symbol (.kicad_sym) KiCad Footprint (.kicad_mod) Fusion 360 (.lbr) 3D Model (.step)

Pricing & Availability

Mouser Electronics
$0.13
$0.091 @ 100 pcs
7,525 in stock · Lead: 84 days
PN: 81-LQM18PN4R7MFRL
View on Mouser →
DigiKey
$0.17
94,381 in stock
Status: Active
View on DigiKey →
JLCPCB / LCSC
—
118,540 in stock
Extended part
View on LCSC →
Adom Basic Part — Always on hand, no shipping fee.

Documents

Datasheet JELF243B-0033 (PDF) →
Spec NumberJELF243B-0033
ManufacturerMurata Mfg. Co., Ltd
Inventory SourceAdom Parts Inventory →

Molecule — Single-Passive Board

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LQM18PN4R7MFRL characterization · Data from Murata datasheet JELF243B-0033 + adom-parts-search · 2026-05-29