SpecNo.JELF243A-0024Y-01
Reference Only
P.1/11
CHIP COIL (CHIP INDUCTORS) LQW18AN□□□□00D REFERENCE SPECIFICATION
1.Scope
This reference specification applies to LQW18AN_00 series, Chip coil (Chip Inductors).
2.Part Numbering
(ex)
LQ
W
18
A
N
2N2
D
0
0
D
Product ID Structure Dimension Applications Category Inductance Tolerance Features Electrode Packaging
(L×W)
and
D:Taping
Characteristics
*B:Bulk
*Bulk packing also available. (A product is put in the plastic bag under the taping conditions.)
3.Rating
・Operating Temperature Range.
・Storage Temperature Range.
Customer
Part Number
–55°C to +125°C
–55°C to +125°C
Inductance
MURATA
Part Number
LQW18AN2N2D00D
LQW18AN3N6C00D
LQW18AN3N6D00D
LQW18AN3N9C00D
LQW18AN3N9D00D
LQW18AN4N3C00D
LQW18AN4N3D00D
LQW18AN4N7D00D
LQW18AN5N6C00D
LQW18AN5N6D00D
LQW18AN6N2C00D
LQW18AN6N2D00D
LQW18AN6N8C00D
LQW18AN6N8D00D
LQW18AN7N5C00D
LQW18AN7N5D00D
LQW18AN8N2C00D
LQW18AN8N2D00D
LQW18AN8N7C00D
LQW18AN8N7D00D
LQW18AN9N1C00D
LQW18AN9N1D00D
LQW18AN9N5D00D
LQW18AN10NG00D
LQW18AN10NJ00D
LQW18AN11NG00D
LQW18AN11NJ00D
LQW18AN12NG00D
LQW18AN12NJ00D
LQW18AN13NG00D
LQW18AN13NJ00D
LQW18AN15NG00D
LQW18AN15NJ00D
LQW18AN16NG00D
LQW18AN16NJ00D
LQW18AN18NG00D
LQW18AN18NJ00D
LQW18AN20NG00D
LQW18AN20NJ00D
LQW18AN22NG00D
LQW18AN22NJ00D
(nH)
Tolerance
Q
(min.)
2.2
D:±0.5nH
16
3.6
3.9
DC
Resistance
(Ω max.)
Self Resonant
Frequency
(MHz min.)
Rated
Current
(mA)
0.042
700
0.059
850
0.082
750
25
C:±0.2nH
D:±0.5nH
4.3
4.7
D:±0.5nH
5.6
6.2
6.8
7.5
C:±0.2nH
D:±0.5nH
6000
35
8.2
8.7
9.1
9.5
0.11
650
0.13
600
D:±0.5nH
10
11
12
13
15
G:±2%
J:±5%
16
5500
18
40
0.16
20
22
MURATA MFG.CO., LTD
550
4900
0.17
4600
500
SpecNo.JELF243A-0024Y-01
Customer
Part Number
Reference Only
Inductance
MURATA
Part Number
(nH)
LQW18AN24NG00D
LQW18AN24NJ00D
LQW18AN27NG00D
LQW18AN27NJ00D
LQW18AN30NG00D
LQW18AN30NJ00D
LQW18AN33NG00D
LQW18AN33NJ00D
LQW18AN36NG00D
LQW18AN36NJ00D
LQW18AN39NG00D
LQW18AN39NJ00D
LQW18AN43NG00D
LQW18AN43NJ00D
LQW18AN47NG00D
LQW18AN47NJ00D
LQW18AN51NG00D
LQW18AN51NJ00D
LQW18AN56NG00D
LQW18AN56NJ00D
LQW18AN62NG00D
LQW18AN62NJ00D
LQW18AN68NG00D
LQW18AN68NJ00D
LQW18AN72NG00D
LQW18AN72NJ00D
LQW18AN75NG00D
LQW18AN75NJ00D
LQW18AN82NG00D
LQW18AN82NJ00D
LQW18AN91NG00D
LQW18AN91NJ00D
LQW18ANR10G00D
LQW18ANR10J00D
LQW18ANR11G00D
LQW18ANR11J00D
LQW18ANR12G00D
LQW18ANR12J00D
LQW18ANR13G00D
LQW18ANR13J00D
LQW18ANR15G00D
LQW18ANR15J00D
LQW18ANR16G00D
LQW18ANR16J00D
LQW18ANR18G00D
LQW18ANR18J00D
LQW18ANR20G00D
LQW18ANR20J00D
LQW18ANR22G00D
LQW18ANR22J00D
LQW18ANR27G00D
LQW18ANR27J00D
LQW18ANR33G00D
LQW18ANR33J00D
LQW18ANR39G00D
LQW18ANR39J00D
LQW18ANR47G00D
LQW18ANR47J00D
Tolerance
Q
(min.)
DC
Resistance
(Ω max.)
24
P.2/11
Self Resonant
Frequency
(MHz min.)
Rated
Current
(mA)
3800
500
3700
440
0.21
27
30
3300
0.23
40
33
420
3200
36
2900
0.26
39
400
2800
43
2700
0.29
47
380
2600
51
0.33
2500
370
0.35
2400
360
62
0.51
2300
280
68
0.38
2200
340
38
56
72
2100
0.56
75
82
270
2050
G:±2%
J:±5%
34
0.60
2000
250
91
0.64
1900
230
100
0.68
1800
220
110
1.2
1700
200
120
1.3
1600
180
1.4
1450
170
150
1.5
1400
160
160
2.1
1350
150
180
2.2
1300
140
2.4
1250
220
2.5
1200
270
3.4
960
130
200
32
25
120
330
5.5
85
800
30
390
6.2
470
7.0
MURATA MFG.CO., LTD
110
80
700
75
SpecNo.JELF243A-0024Y-01
Reference Only
P.3/11
4. Testing Conditions
《Unless otherwise specified》
Temperature : Ordinary Temperature / 15°C to 35°C
: Ordinary Humidity
/ 25%(RH) to 85%(RH)
Humidity
《In case of doubt》
Temperature : 20°C±2°C
Humidity
: 60%(RH) to 70%(RH)
Atmospheric Pressure : 86kPa to 106 kPa
5. Appearance and Dimensions
■Unit Mass (Typical value)
0.003g
0.8±0.15
0.2±0.1
0.8±0.2
0.4 max.
0.8±0.2
1.6±0.2
0.3±0.1
(in mm)
0.3±0.1
6.Electrical Performance
No.
6.1
Item
Inductance
Specification
Inductance shall meet item 3.
Test Method
Measuring Equipment:
KEYSIGHT E4991A or equivalent
Measuring Frequency:
100MHz
250MHz/ 2.2nH~39nH
200MHz/ 43nH~68nH
150MHz/ 72nH~160nH
100MHz/ 180nH~470nH
Measuring Condition:
Test signal level / about 0dBm
Electrode spaces / 1.0mm
Electrical length / 0.94cm
Measuring Fixture: KEYSIGHT 16193A
6.2
Q
Q shall meet item 3.
Position coil under test as shown in below
and contact coil with each terminal by
adding weight.
1mm
6.97mm
Measuring Method:See the endnote.
6.3
DC Resistance
DC Resistance shall meet item 3.
Measuring Equipment:Digital multi meter
6.4
Self Resonant
Frequency(S.R.F)
S.R.F shall meet item 3.
Measuring Equipment:
KEYSIGHT N5230A or equivalent
6.5
Rated Current
Self temperature rise shall be
limited to 20°C max.
Inductance Change: within ±10%
The rated current is applied.
MURATA MFG.CO., LTD
SpecNo.JELF243A-0024Y-01
Reference Only
P.4/11
7.Mechanical Performance
No.
7.1
Item
Shear Test
Specification
Chip coil shall not be damaged
after tested as test method.
Test Method
Substrate:Glass-epoxy substrate
Chip Coil
Pattern
2.2
Solder resist
Substrate
0.7
0.7
Chip Coil
Applied Direction:
(in mm)
F
Substrate
Force:5N
Hold Duration:5s±1s
7.2
Bending Test
Substrate:Glass-epoxy substrate
(100mm×40mm×1.6mm)
Speed of Applying Force:1mm / s
Deflection:2mm
Hold Duration:30s
Pressure jig
R340
F
Deflection
45
45
Product
(in mm)
7.3
Vibration
Chip coil shall not be damaged
after tested as test method.
Oscillation Frequency:
10Hz~55Hz~10Hz for 1 min
Total Amplitude:1.5mm
Testing Time:
A period of 2 hours in each of 3 mutually
perpendicular directions.
7.4
Solderability
The wetting area of the electrode
shall be at least 90% covered with
new solder coating.
Flux:Ethanol solution of rosin,25(wt)%
Includes activator equivalent to 0.06(wt)%
chlorine.(immersed for 5s to 10s)
Solder:Sn-3.0Ag-0.5Cu
Pre-Heating:150°C±10°C / 60s to 90s
Solder Temperature:240°C±5°C
Immersion Time:3s±1s
7.5
Resistance to
Soldering Heat
Appearance:No damage
Inductance Change: within ±5%
Flux:Ethanol solution of rosin,25(wt)%
Includes activator equivalent to 0.06(wt)%
Chlorine.(immersed for 5s to 10s)
Solder:Sn-3.0Ag-0.5Cu
Pre-Heating:150°C±10°C / 60s to 90s
Solder Temperature:270°C±5°C
Immersion Time:10s±1s
Then measured after exposure in the room
condition for 24h±2h.
MURATA MFG.CO., LTD
Reference Only
SpecNo.JELF243A-0024Y-01
P.5/11
8.Environmental Performance
It shall be soldered on the substrate.
No.
Item
Specification
8.1 Heat Resistance
Appearance:No damage
Inductance Change: within ±5%
Q Change: within ±20%
Appearance:No damage
Inductance Change: within ±5%
Q Change: within ±20%
Test Method
Temperature:125°C±2°C
Time:1000h (+48h,0h)
Then measured after exposure in the room
condition for 24h±2h.
8.2
Cold Resistance
Temperature:-55°C±2°C
Time:1000h (+48h,-0h)
Then measured after exposure in the room
condition for 24h±2h.
8.3
Humidity
Temperature:40°C±2°C
Humidity:90%(RH) to 95%(RH)
Time:1000h (+48h,-0h)
Then measured after exposure in the room
condition for 24h±2h.
8.4
Temperature
Cycle
1 cycle:
1 step:-55°C±2°C / 30min±3 min
2 step:Ordinary temp. / 10min to 15 min
3 step:+125°C±2°C / 30min±3 min
4 step:Ordinary temp. / 10min to15 min
Total of 10 cycles
Then measured after exposure in the room
condition for 24h±2h.
9.Specification of Packaging
1 .8 ±0 .0 5
8 .0 ±0 .2
1.75±0.1
3 .5 ±0 .0 5
9.1 Appearance and Dimensions of paper tape (8mm-wide)
2.0±0.05
4.0±0.1 φ 1.5± 0.1
0
4.0±0.1
(in mm)
1.0±0.05
Direction of feed
1.1 max.
9.2 Specification of Taping
(1) Packing quantity (standard quantity)
4,000 pcs. / reel
(2) Packing Method
Products shall be packed in the cavity of the base tape and sealed by top tape and bottom tape.
(3) Sprocket hole
The sprocket holes are to the right as the tape is pulled toward the user.
(4) Spliced point
Base tape and Top tape has no spliced point.
(5) Missing components number
Missing components number within 0.1 % of the number per reel or 1 pc., whichever is greater,
and are not continuous. The Specified quantity per reel is kept.
9.3 Pull Strength
Top tape
Bottom tape
5N min.
MURATA MFG.CO., LTD
Reference Only
SpecNo.JELF243A-0024Y-01
9.4 Peeling off force of cover tape
Speed of Peeling off
300mm/min
0.1N to 0.6N
(minimum value is typical)
Peeling off force
165 to 180 degree
P.6/11
Top tape
F
Bottom tape
Base tape
9.5 Dimensions of Leader-tape,Trailer and Reel
There shall be leader-tape ( top tape and empty tape) and trailer-tape (empty tape) as follows.
Trailer
160 min.
2.0±0.5
Leader
Label
190 min.
210 min.
Empty tape
Top tape
φ 13.0±0.2
+1
φ 60 -0
φ 21.0±0.8
9.0 +1
-0
Direction of feed
(in mm)
13.0±1.4
+0
φ 180 -3
9.6 Marking for reel
Customer part number, MURATA part number, Inspection number(∗1) ,RoHS Marking (∗2),
Quantity etc ・・・
□□ OOOO ×××
∗1)
(1)
(2)
(3)
(1) Factory code
(2) Date
First digit: Year / Last digit of year
Second digit: Month / Jan. to Sep. → 1 to 9, Oct. to Dec. → O, N, D
Third, Fourth digit : Day
(3) Serial No.
∗2)
ROHS – Y (△)
(1) (2)
(1) RoHS regulation conformity parts.
(2) MURATA classification number
9.7 Marking for Outside package (corrugated paper box)
Customer name, Purchasing order number, Customer part number, MURATA part number,
RoHS Marking (∗2) ,Quantity, etc ・・・
9.8. Specification of Outer Case
Label
H
D
W
Outer Case Dimensions
(mm)
W
D
H
186
186
93
Standard Reel Quantity
in Outer Case (Reel)
5
∗ Above Outer Case size is typical. It depends on a quantity of an order.
10. ! Caution
Limitation of Applications
Please contact us before using our products for the applications listed below which require especially
high reliability for the prevention of defects which might directly cause damage to the third party's life,
body or property.
(1) Aircraft equipment
(2) Aerospace equipment
(3) Undersea equipment
(4) Power plant control equipment
(5) Medical equipment
(6) Transportation equipment (vehicles, trains, ships, etc.)
(7) Traffic signal equipment
(8) Disaster prevention / crime prevention equipment
(9) Data-processing equipment
(10) Applications of similar complexity and /or reliability
requirements to the applications listed in the above
MURATA MFG.CO., LTD
Reference Only
SpecNo.JELF243A-0024Y-01
P.7/11
11. Notice
Products can only be soldered with reflow.
This product is designed for solder mounting.
Please consult us in advance for applying other mounting method such as conductive adhesive.
11.1 Land pattern designing
Recommended land patterns for reflow soldering are as follows:
These have been designed for Electric characteristics and solderability.
Please follow the recommended patterns. Otherwise, their performance which includes electrical performance
or solderability may be affected, or result to "position shift" in soldering process.
Chip Coil
c
Land
Solder resist
a
A
0.6 to 0.8
B
1.9 to 2.0
C
0.7 to 1.0
(in mm)
b
11.2 Flux, Solder
・Use rosin-based flux.
Includes middle activator equivalent to 0.06(wt)% to 0.1(wt)% Chlorine.
Don’t use highly acidic flux with halide content exceeding 0.2(wt)% (chlorine conversion value).
Don’t use water-soluble flux.
・Use Sn-3.0Ag-0.5Cu solder.
・Standard thickness of solder paste : 100μm to 150μm.
11.3 Reflow soldering conditions
・Pre-heating should be in such a way that the temperature difference between solder and product
surface is limited to 150°C max. Cooling into solvent after soldering also should be in such a way that
the temperature difference is limited to 100°C max.
Insufficient pre-heating may cause cracks on the product, resulting in the deterioration of products quality.
・Standard soldering profile and the limit soldering profile is as follows.
The excessive limit soldering conditions may cause leaching of the electrode and / or resulting
in the deterioration of product quality.
・Reflow soldering profile
Temp.
(℃)
260℃
245℃±3℃
220℃
230℃
Limit Profile
180
150
Standard Profile
30s~60s
60s max.
90s±30s
Pre-heating
Heating
Peak temperature
Cycle of reflow
Time. (s)
Standard Profile
Limit Profile
150°C~180°C 、90s±30s
above 220°C、30s~60s
above 230°C、60s max.
245°C±3°C
260°C,10s
2 times
2 times
MURATA MFG.CO., LTD
Reference Only
SpecNo.JELF243A-0024Y-01
11.4 Reworking with soldering iron
The following conditions must be strictly followed when using a soldering iron.
Pre-heating
Tip temperature
Soldering iron output
Tip diameter
Soldering time
Time
P.8/11
150°C,1 min
350°C max.
80W max.
φ3mm max.
3(+1,-0)s
2 times
Note :Do not directly touch the products with the tip of the soldering iron in order to prevent the
crack on the products due to the thermal shock.
11.5 Solder Volume
・Solder shall be used not to be exceeded the upper limits as shown below.
・Accordingly increasing the solder volume, the mechanical stress to Chip is also increased.
Exceeding solder volume may cause the failure of mechanical or electrical performance.
Upper Limit
Recommendable(t)
T
1/3T≦t≦T
T:thickness of product
11.6 Product’s location
The following shall be considered when designing and laying out P.C.B.'s.
(1) P.C.B. shall be designed so that products are not subject to the mechanical stress due to
warping the board.
[Products direction]
a
b
〈 Poor example 〉
Products shall be located in the sideways
direction (Length:a<b) to the mechanical
stress.
〈 Good example〉
(2) Components location on P.C.B. separation.
It is effective to implement the following measures, to reduce stress in separating the board.
It is best to implement all of the following three measures; however, implement as many measures as possible
to reduce stress.
Contents of Measures
(1) Turn the mounting direction of the component parallel to the board separation surface.
(2) Add slits in the board separation part.
(3) Keep the mounting position of the component away from the board separation surface.
Seam
b
A
C
B
D
Slit
Length:a< b
a
*1 A > D is valid when stress is added vertically to the perforation as with Hand Separation.
If a Cutting Disc is used, stress will be diagonal to the PCB, therefore A > D is invalid.
MURATA MFG.CO., LTD
Stress Level
A > D *1
A > B
A > C
Reference Only
SpecNo.JELF243A-0024Y-01
P.9/11
(3) Mounting Components Near Screw Holes
When a component is mounted near a screw hole, it may be affected by the board deflection that occurs during
the tightening of the screw. Mount the component in a position as far away from the screw holes as possible.
11.7 Cleaning Conditions
Products shall be cleaned on the following conditions.
(1) Cleaning temperature shall be limited to 60°C max.(40°C max for IPA)
(2) Ultrasonic cleaning shall comply with the following conditions with avoiding the resonance
phenomenon at the mounted products and P.C.B.
Power : 20 W / l max.
Frequency : 28kHz to 40kHz
Time : 5 min max.
(3) Cleaner
1. Alcohol type cleaner
Isopropyl alcohol (IPA)
2. Aqueous agent
PINE ALPHA ST-100S
(4) There shall be no residual flux and residual cleaner after cleaning.
In the case of using aqueous agent, products shall be dried completely after rinse with de-ionized
water in order to remove the cleaner.
(5) Other cleaning
Please contact us.
11.8 Resin coating
The inductance value may change due to high cure-stress of resin to be used for coating/molding products.
An open circuit issue may occur by mechanical stress caused by the resin, amount/cured shape of resin, or
operating condition etc. Some resin contains some impurities or chloride possible to generate chlorine by
hydrolysis under some operating condition may cause corrosion of wire of coil, leading to open circuit.
So, please pay your careful attention in when you select resin in case of coating/molding the products
with the resin.
Prior to use the coating resin, please make sure no reliability issue is observed by evaluating products
mounted on your board.
11.9 Caution for use
・Sharp material such as a pair of tweezers or other material such as bristles of cleaning brush , shall not be touched to
the winding portion to prevent the breaking of wire.
・Mechanical shock should not be applied to the products mounted on the board to prevent the breaking of the core.
11.10 Notice of product handling at mounting
In some mounting machines,when picking up components support pin pushes up the components from the
bottom of base tape. In this case, please remove the support pin. The support pin may damage the components
and break wire.
In rare case ,the laser recognition can not recognize this component. Please contact us when you use laser
recognition. (There is no problem with the permeation and reflection type.)
11.11 Handling of a substrate
After mounting products on a substrate, do not apply any stress to the product caused by bending or twisting to the
substrate when cropping the substrate, inserting and removing a connector from the substrate or tightening screw
to the substrate.
Excessive mechanical stress may cause cracking in the product.
Bending
Twisting
MURATA MFG.CO., LTD
SpecNo.JELF243A-0024Y-01
Reference Only
P.10/11
11.12 Storage and Handing Requirements
(1) Storage period
Use the products within 12 months after delivered.
Solderability should be checked if this period is exceeded.
(2) Storage conditions
・Products should be stored in the warehouse on the following conditions.
Temperature : -10°C to 40°C
Humidity
: 15% to 85% relative humidity No rapid change on temperature and humidity
・Don't keep products in corrosive gases such as sulfur,chlorine gas or acid, or it may cause
oxidization of electrode, resulting in poor solderability.
・Products should not be stored on bulk packaging condition to prevent the chipping of the
core and the breaking of winding wire caused by the collision between the products.
・Products should be stored on the palette for the prevention of the influence from humidity,
dust and so on.
・Products should be stored in the warehouse without heat shock, vibration, direct sunlight and so on.
(3) Handling Condition
Care should be taken when transporting or handling product to avoid excessive vibration or
mechanical shock.
12.! Note
(1)Please make sure that your product has been evaluated in view of your specifications with our product being
mounted to your product.
(2)You are requested not to use our product deviating from the reference specifications.
(3)The contents of this reference specification are subject to change without advance notice.
Please approve our product specifications or transact the approval sheet for product specifications
before ordering.
MURATA MFG.CO., LTD
Reference Only
SpecNo.JELF243A-0024Y-01
P.11/11
(1) Residual elements and stray elements of test fixture can be described by F-parameter shown in following.
I2
I1
A
Zm
V1
Test Head
B
V2
D
C
Test fixture
Zx
V1
I1
=
A B
C D
V2
I2
Product
(2) The impedance of chip coil Zx and measured value Zm can be described by input/output current/voltage.
Zm=
V1
I1
,
V2
I2
Zx=
(3) Thus,the relation between Zx and Zm is following;
Zx= α
Zm-β
1-ZmΓ
where, α= D / A =1
β= B / D =Zsm-(1-Yom Zsm)Zss
Γ= C / A =Yom
Zsm : measured impedance of short chip
Zssa: residual impedance of short chip (0.771nH)
Yom: measured admittance when opening the fixture
(4) Lx and Qx shall be calculated with the following equation.
Lx=
Im(Zx)
,
2πf
Qx =
Im(Zx)
Re(Zx)
Lx : Inductance of chip coil
Qx : Q of chip coil
f : Measuring frequency
MURATA MFG.CO., LTD
Mouser Electronics
Authorized Distributor
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Murata:
LQW18AN10NG00D LQW18AN10NJ00D LQW18AN11NG00D LQW18AN11NJ00D LQW18AN12NG00D
LQW18AN12NJ00D LQW18AN13NG00D LQW18AN13NJ00D LQW18AN15NG00D LQW18AN15NJ00D
LQW18AN16NG00D LQW18AN16NJ00D LQW18AN18NG00D LQW18AN18NJ00D LQW18AN20NG00D
LQW18AN20NJ00D LQW18AN22NG00D LQW18AN22NJ00D LQW18AN24NG00D LQW18AN24NJ00D
LQW18AN27NG00D LQW18AN27NJ00D LQW18AN2N2D00D LQW18AN30NG00D LQW18AN30NJ00D
LQW18AN33NG00D LQW18AN33NJ00D LQW18AN36NG00D LQW18AN36NJ00D LQW18AN39NG00D
LQW18AN3N6C00D LQW18AN3N6D00D LQW18AN3N9C00D LQW18AN3N9D00D LQW18AN43NG00D
LQW18AN43NJ00D LQW18AN47NG00D LQW18AN47NJ00D LQW18AN4N3C00D LQW18AN4N3D00D
LQW18AN4N7D00D LQW18AN51NG00D LQW18AN51NJ00D LQW18AN56NG00D LQW18AN56NJ00D
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