Inductance Q
1
Self-
2
Minimum Value DC resonant Allowable Operating
Dimensions: mm Part Number Nominal Tolerance
Test Peak
QTest Resistance Frequency Current Temp.
Value (nH) Frequency Value
Value Frequency (Ohms max.) (MHz min.) (mA) Range
(MHz) (Typ.) (MHz)
LQN21A04
LQN21A3N3D04 3.3 10 0.05 6000 910
LQN21A6N8D04 6.8 ±0.5nH 70 20 0.11 5400 680
LQN21A8N2D04 8.2 0.12 3900 630
LQN21A10NJ04 10 80 0.03 3300 1320
LQN21A12NJ04 12 65 0.11 3200 680
LQN21A15NJ04 15 30 250 0.12 2700 630
LQN21A18NJ04 18 0.10 2600 690
LQN21A22NJ04 22 70 0.09 2100 720
LQN21A27NJ04 27 0.17 2300 540 –25°C
LQN21A33NJ04 33 100 65 0.15 1900 570 ~
LQN21A39NJ04 39 80 0.09 1700 730 +85°C
LQN21A47NJ04 47 ±5% 65 0.23 1600 450
LQN21A56NJ04 56 70 40 200 0.26 1500 430
LQN21A68NJ04 68 65 0.23 1200 460
LQN21A82NJ04 82 60 0.42 1100 320
LQN21AR10J04 100 70 150 0.38 900 350
LQN21AR12J04 120 50 0.40 750 320
LQN21AR15J04 150 45 30 0.47 350 390
LQN21AR18J04 180 35 100 0.71 700 250
LQN21AR22J04 220 0.70 500 240
LQN21AR27K04 270 50 2.00 550 190
LQN21AR33K04 330 ±10% 10 2.20 500 180
LQN21AR39K04 390 15 25.2 2.50 400 170
LQN21AR47K04 470 2.80 350 160
Tight Tolerance
LQN21A33NG04 33 10 0.15 1900 570
LQN21A33NG04 39 70 20 0.09 1700 730
LQN21A33NG04 47 0.23 1600 450
LQN21A33NG04 56 80 0.26 1500 430 –25°C
LQN21A33NG04 68 65 0.23 1200 460 ~
LQN21A33NG04 82 ±2% 100 30 250 0.42 1100 320 +85°C
LQN21AR10G04 100 0.55 900 270
LQN21AR12G04 120 70 0.40 750 320
LQN21AR15G04 150 0.68 350 260
LQN21AR18G04 180 65 0.71 700 250
LQN21AR22G04 220 80 0.02 500 240
SURFACE MOUNT INDUCTORS
CHIP INDUCTORS
The LQN21A Series consists of air-core chip coils using a
subminiature alumina core as a bobbin. The High Q values
at high frequencies and high self-resonant frequencies make
this coil perfect for use in the high frequency circuits of
communications equipment.
FEATURES
■ LQN21A04
•Broad inductance range
•Inductance tolerance: ±0.5nH (≤8.2nH); ±5% (10nH–470nH)
■ LQN21A
•Tight Inductance Tolerance ±2%
■ LQN21A44
•High Q •High Rated Current •Low DCR
PART NUMBERING SYSTEM
LQN 21 A 3N3 D 04 M00
TYPE SIZE CORE MATERIAL INDUCTANCE CODE TOLERANCE ELECTRODE UNMARKED
LQN: Non-epoxy 21: 2.0 x 1.5mm (0805) A: Air Core 3N3: 3.3nH D: ±0.5nH MATERIAL
coated J: ±5% 04/44: Nickel &
G: ±2% Solder
SPECIFICATIONS
LQN21A Series
1.5 ± 0.2 1.5 ± 0.2
1.5 ± 0.2
2.0 ± 0.2
0.5
min. 0.5
min.
0.5
min.
1.78 max.
1: Measured with LCR meter YHP4191A, measuring tap 16193A. 2: Measured with Network Analyzer HP8753C.
Available as standard through authorized Murata Electronics Distributors.
0805
218 CG01-J
Inductance Q S
elf-
DC resonant Allowable Operating
Dimensions: mm Part Number Nominal Tolerance
Test Nominal Test 800 1.5 Resistance Frequency Current Temp.
Value (nH) Frequency Value
Frequency
MHz GHz (Ohms max.) (MHz min.) (mA) Range
(MHz) (min.) (MHz) (Typ.) (Typ.)
LQN21A2N7D44 2.7 120 1900
LQN21A3N1D44 3.1 20 85 110 6000 1800
LQN21A3N3D44 3.3 ±0.5nH 0.02 1700
LQN21A5N6D44 5.6 1500
LQN21A6N8D44 6.8 95 115 5400 1400 –25°C
LQN21A8N6D44 8.6 100 35 250 100 3900 1300 ~
LQN21A10NJ44 10 ±5% 85 0.03 3300 1320 +85°C
LQN21A12NK44 12 100 90 3200 1100
LQN21A15NK44 15 0.04 3100 1000
LQN21A18NK44 18.8 ±10% 40 105 75 2600
LQN21A21NK44 21 65 0.05 2200 950
LQN21A27NK44 27 95 45 0.06 1800 900
CG01-J 219
SURFACE MOUNT INDUCTORS
CHIP INDUCTORS
TYPICAL ELECTRICAL CHARACTERISTICS
LQN21A Series
Q-FREQUENCY CHARACTERISTICS
LQN21A 04
LQN21A 44
Q-FREQUENCY CHARACTERISTICS
LQN21A
(Tight Inductance Tolerance)
INDUCTANCE-FREQUENCY CHARACTERISTICS
LQN21A44
100
80
60
40
0
Q
1 10 1000
Frequency (MHz)
20
330nH
220nH
470nH
5 50 500 100005000
10nH
33nH
100
Inductance (nH)
10 100 1000 10000
Frequency (MHz)
0
12nH
27nH
3.3nH
10
5000
100
20
30
40
50
50050
100
150
120
90
60
0
Q
10 1000
Frequency (MHz)
30
27nH
50 500 100005000
12nH
3.3nH
SPECIFICATIONS
1: Measured with LCR meter YHP4191A, measuring tap 16193A.
2: Measured with Network Analyzer HP8753C.
Available as standard through authorized Murata Electronics Distributors.
LQN21A44
1.5 ± 0.2 1.5 ± 0.2
1.5 ± 0.2
2.0 ± 0.2
0.5
min. 0.5
min.
0.5
min.
1.78 max.
100
80
60
40
20
01 10 100 1000 10000
220nH 33nH 10nH
3.3nH
Frequency (MHz)
Q
SURFACE MOUNT
INDUCTORS