LQW18AS39NJ0Z# 概述
LQW18AS39NJ0Z# 数据手册
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PDF下载Spec No.: JELF243A_9139D-01
P1/13
CHIP COILS (CHIP INDUCTORS) LQW18AS□□□□0Z□
Murata Standard Reference Specification [AEC-Q200]
1. Scope
This reference specification applies to chip coils (chip inductors) LQW18AS_0Z series for automotive electronics based on
AEC-Q200 except for power trains and safeties.
2. Part Numbering
(Ex.)
LQ
W
18
A
S
1N6
J
0
Z
D
Product Structure Dimension Application Category Inductance Tolerance Performance
Category
Packaging
ID
(L × W)
and
characteristic
Z: Automotive D: taping
*B: bulk
*B: Bulk packing is also available (taping condition: however, products without reels are put in plastic bags).
3. Part Number and Rating
Operating temperature range
Storage temperature range
-40°C to +125°C
-40°C to +125°C
Inductance
DC
resistance
(Ω max.)
Self-resonant Rated
ESD
Rank
6: 25 kV
Customer
Murata
Q
(Min.)
Nominal
value
frequency
current
(mA)
Part number
Part number
Tolerance
(MHz min.)
(nH)
LQW18AS1N6J0ZD
LQW18AS1N8J0ZD
LQW18AS3N3G0ZD
LQW18AS3N3J0ZD
LQW18AS3N6G0ZD
LQW18AS3N6J0ZD
LQW18AS3N9G0ZD
LQW18AS3N9J0ZD
LQW18AS4N3G0ZD
LQW18AS4N3J0ZD
LQW18AS4N7G0ZD
LQW18AS4N7J0ZD
LQW18AS5N1G0ZD
LQW18AS5N1J0ZD
LQW18AS5N6G0ZD
LQW18AS5N6J0ZD
LQW18AS6N8G0ZD
LQW18AS6N8J0ZD
LQW18AS7N5G0ZD
LQW18AS7N5J0ZD
LQW18AS8N2G0ZD
LQW18AS8N2J0ZD
LQW18AS8N7G0ZD
LQW18AS8N7J0ZD
LQW18AS9N5G0ZD
LQW18AS9N5J0ZD
LQW18AS10NG0ZD
LQW18AS10NJ0ZD
LQW18AS11NG0ZD
1.6
1.8
3.3
3.3
3.6
3.6
3.9
3.9
4.3
4.3
4.7
4.7
5.1
5.1
5.6
5.6
6.8
6.8
7.5
7.5
8.2
8.2
8.7
8.7
9.5
9.5
10
J: ±5%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
24
16
35
35
22
22
22
22
22
22
20
20
20
20
26
26
27
27
28
28
30
30
28
28
28
28
31
31
30
0.030
0.045
0.045
0.045
0.063
0.063
0.080
0.080
0.063
0.063
0.116
0.116
0.140
0.140
0.075
0.075
0.110
0.110
0.106
0.106
0.115
0.115
0.109
0.109
0.135
0.135
0.130
0.130
0.086
12500
12500
5900
5900
5900
5900
6900
6900
5900
5900
5800
5800
5700
5700
4760
4760
5800
5800
4800
4800
4200
4200
4600
4600
5400
5400
4800
4800
4000
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
10
11
MURATA MFG CO., LTD
Spec No.: JELF243A_9139D-01
Customer
P2/13
ESD
Rank
6: 25 kV
Inductance
Nominal
DC
resistance
(Ω max.)
Self-resonant Rated
Murata
Q
(Min.)
frequency
current
(mA)
Part number
Part number
value
(nH)
Tolerance
(MHz min.)
LQW18AS11NJ0ZD
LQW18AS12NG0ZD
LQW18AS12NJ0ZD
LQW18AS15NG0ZD
LQW18AS15NJ0ZD
LQW18AS16NG0ZD
LQW18AS16NJ0ZD
LQW18AS18NG0ZD
LQW18AS18NJ0ZD
LQW18AS22NG0ZD
LQW18AS22NJ0ZD
LQW18AS23NG0ZD
LQW18AS23NJ0ZD
LQW18AS24NG0ZD
LQW18AS24NJ0ZD
LQW18AS27NG0ZD
LQW18AS27NJ0ZD
LQW18AS30NG0ZD
LQW18AS30NJ0ZD
LQW18AS33NG0ZD
LQW18AS33NJ0ZD
LQW18AS36NG0ZD
LQW18AS36NJ0ZD
LQW18AS39NG0ZD
LQW18AS39NJ0ZD
LQW18AS43NG0ZD
LQW18AS43NJ0ZD
LQW18AS47NG0ZD
LQW18AS47NJ0ZD
LQW18AS51NG0ZD
LQW18AS51NJ0ZD
LQW18AS56NG0ZD
LQW18AS56NJ0ZD
LQW18AS68NG0ZD
LQW18AS68NJ0ZD
LQW18AS72NG0ZD
LQW18AS72NJ0ZD
LQW18AS82NG0ZD
LQW18AS82NJ0ZD
LQW18ASR10G0ZD
LQW18ASR10J0ZD
LQW18ASR11G0ZD
LQW18ASR11J0ZD
LQW18ASR12G0ZD
LQW18ASR12J0ZD
LQW18ASR15G0ZD
11
12
12
15
15
16
16
18
18
22
22
23
23
24
24
27
27
30
30
33
33
36
36
39
39
43
43
47
47
51
51
56
56
68
68
72
72
82
82
100
100
110
110
120
120
150
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
30
35
35
35
35
34
34
35
35
38
38
38
38
36
36
40
40
37
37
40
40
37
37
40
40
38
38
38
38
35
35
38
38
37
37
34
34
34
34
34
34
32
32
32
32
28
0.086
0.130
0.130
0.170
0.170
0.104
0.104
0.170
0.170
0.190
0.190
0.190
0.190
0.135
0.135
0.220
0.220
0.144
0.144
0.220
0.220
0.250
0.250
0.250
0.250
0.280
0.280
0.280
0.280
0.270
0.270
0.310
0.310
0.340
0.340
0.490
0.490
0.540
0.540
0.580
0.580
0.610
0.610
0.650
0.650
0.920
4000
4000
4000
4000
4000
3300
3300
3100
3100
3000
3000
2850
2850
2650
2650
2800
2800
2250
2250
2300
2300
2080
2080
2200
2200
2000
2000
2000
2000
1900
1900
1900
1900
1700
1700
1700
1700
1700
1700
1400
1400
1350
1350
1300
1300
990
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
400
400
400
400
400
400
300
300
300
300
280
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
MURATA MFG CO., LTD
Spec No.: JELF243A_9139D-01
Customer
P3/13
ESD
Rank
6: 25 kV
Inductance
Nominal
DC
resistance
(Ω max.)
Self-resonant Rated
Murata
Q
(Min.)
frequency
current
(mA)
Part number
Part number
value
(nH)
Tolerance
(MHz min.)
LQW18ASR15J0ZD
LQW18ASR18G0ZD
LQW18ASR18J0ZD
LQW18ASR20G0ZD
LQW18ASR20J0ZD
LQW18ASR21G0ZD
LQW18ASR21J0ZD
LQW18ASR22G0ZD
LQW18ASR22J0ZD
LQW18ASR25G0ZD
LQW18ASR25J0ZD
LQW18ASR27G0ZD
LQW18ASR27J0ZD
LQW18ASR33G0ZD
LQW18ASR33J0ZD
LQW18ASR39G0ZD
LQW18ASR39J0ZD
150
180
180
200
200
210
210
220
220
250
250
270
270
330
330
390
390
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
G: ±2%
J: ±5%
28
25
25
25
25
27
27
25
25
25
25
24
24
25
25
25
25
0.920
1.250
1.250
1.980
1.980
2.060
2.060
2.100
2.100
3.550
3.550
2.300
2.300
3.890
3.890
4.350
4.350
990
990
990
900
900
895
895
900
900
822
822
900
900
900
900
900
900
280
240
240
200
200
200
200
200
200
120
120
170
170
100
100
100
100
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
4. Testing Conditions
Unless otherwise specified
Temperature: ordinary temperature (15°C to 35°C)
Humidity: ordinary humidity [25% to 85% (RH)]
In case of doubt
Temperature: 20°C±2°C
Humidity: 60% to 70% (RH)
Atmospheric pressure: 86 kPa to 106 kPa
5. Appearance and Dimensions
Unit mass (typical value): 0.003 g
6. Marking
No marking.
MURATA MFG CO., LTD
Spec No.: JELF243A_9139D-01
P4/13
7. Electrical Performance
No.
Item
Specification
Meet chapter 3 ratings.
Test method
7.1 Inductance
Measuring equipment: Keysight E4991A or the
equivalent
Measuring frequency:
Inductance
250 MHz 1.6 nH to 43 nH
200 MHz 47 nH to 68 nH
150 MHz 72 nH to 150 nH
100 MHz 180 nH to 390 nH
250 MHz 1.6 nH to 43 nH
200 MHz 47 nH to 68 nH
150 MHz 72 nH to 150 nH
100 MHz 180 nH to 390 nH
Q
Measuring conditions:
Measurement signal level: Approx. 0 dBm
Measurement terminal distance: 1.0 mm
Electrical length: 10.0 mm
Measuring fixture: Keysight 16197A
Position the chip coil under test as shown in the
measuring example below and connect it to the
electrode by applying weight.
7.2
Q
Meet chapter 3 ratings.
Measurement example:
Measuring method: see "Electrical performance:
Measuring method for inductance/Q" in the chapter
"15. Appendix".
7.3 DC resistance
Meet chapter 3 ratings.
Meet chapter 3 ratings.
Measuring equipment: digital multimeter
7.4 Self-resonant
frequency
Measuring equipment: Keysight N5230A or the
equivalent
MURATA MFG CO., LTD
Spec No.: JELF243A_9139D-01
P5/13
8. AEC-Q200 Requirement
8.1 Performance [based on table 5 for magnetics (inductors/transformer) AEC-Q200 Rev. D issued June 1,
2010]
AEC-Q200
Murata specification/deviation
No.
3
Stress
Test method
High
1000 h at 125°C
Set for 24 h at room condition, then
measured.
Meet table A after testing.
Table A
temperature
exposure
Appearance
No damage
Within ±5%
Inductance change rate
1.6 nH to 43 nH (at 250 MHz)
47 nH to 68 nH (at 200 MHz)
72 nH to 150 nH (at 150 MHz)
180 nH to 390 nH (at 100 MHz)
4
Temperature
cycling
1000 cycles
-40°C to +125°C
Meet table A after testing.
Set for 24 h at room condition, then
measured.
7
8
9
Biased humidity 1000 h at 85°C, 85% (RH). Unpowered. Meet table A after testing.
Set for 24 h at room condition, then
measured.
Operational life Apply rated current 125°C 1000 h
Set for 24 h at room condition, then
measured.
Meet table A after testing.
External visual Visual inspection
No abnormalities
No defects
10 Physical
dimension
Meet chapter 5, "Appearance and
Dimensions".
12 Resistance to
solvents
Per MIL-STD-202
Method 215
Not applicable
13 Mechanical
shock
Per MIL-STD-202
Method 213
Meet table A after testing.
Condition C:
100 g’s (0.98 N), 6 ms, half sine, 12.3 ft/s
14 Vibration
5 g's (0.049 N) for 20 min, 12 cycles each Meet table A after testing.
of 3 orientations
Test from 10 Hz to 2000 Hz
15 Resistance to
soldering heat
No-heating
Solder temperature
260°C±5°C
Pre-heating: 150°C±10°C, 60 s to 90 s
Meet table A after testing.
Immersion time 10 s
17 ESD
Per AEC-Q200-002
Per J-STD-002
ESD rank: Refer to chapter 3 ratings.
Meet table A after testing.
18 Solderbility
Method b: not applicable
95% of the terminations is to be soldered (except exposed
wire).
19 Electrical
Measured: inductance
Per UL-94
No defects
characterization
20 Flammability
21 Board flex
Not applicable
Epoxy-PCB (1.6 mm)
Deflection 2 mm (min.)
Holding time 60 s
Meet table B after testing.
Table B
Appearance
No damage
Within ±10%
DC resistance change rate
22 Terminal
strength
Per AEC-Q200-006
A force of 17.7 N for 60 s
Murata deviation request: 10 N for 5 s
No defect
MURATA MFG CO., LTD
Spec No.: JELF243A_9139D-01
P6/13
9. Specification of Packaging
9.1 Appearance and dimensions of tape (8 mm width/paper tape)
A
B
t
(1.06)
(1.86)
1.1 max.
(in mm)
9.2 Taping specifications
Packing quantity
4000 pcs/reel
(Standard quantity)
Packing method
The products are placed in embossed cavities of a base tape and sealed by a top tape and a bottom
tape.
Feed hole position
Joint
The feed holes on the base tape are on the right side when the top tape is pulled toward the user.
The base tape and the top tape are seamless.
Number of missing
products
Number of missing products within 0.025% of the number per reel or 1 pc., whichever is greater, and
are not continuous. The specified quantity per reel is kept.
9.3 Break down force of tape
Break down force of top tape
5 N min.
5 N min.
Break down force of bottom tape
9.4 Peeling off force of top tape
Speed of peeling off
300 mm/min
Peeling off force
0.1 N to 0.6 N (The lower limit is for typical value.)
Top tape
F
165 to 180 degree
Bottom tape
Base tape
9.5 Dimensions of leader section, trailer section and reel
A vacant section is provided in the leader (start) section and trailer (end) section of the tape for the product. The leader
section is further provided with an area consisting only of the cover tape (or top tape). (See the diagram below.)
MURATA MFG CO., LTD
Spec No.: JELF243A_9139D-01
P7/13
9.6 Marking for reel
Customer part number, Murata part number, inspection number (*1), RoHS marking (*2), quantity, etc.
*1 Expression of inspection No.: (1) Factory code
□□
(1)
○○○○
(2)
(2) Date
First digit: year/last digit of year
(3)
Second digit: month/Jan. to Sep.→1 to 9, Oct. to Dec.→O, N, D
Third, Fourth digit: day
(3) Serial No.
*2 Expression of RoHS marking: (1) RoHS regulation conformity
ROHS-
Y
()
(2) Murata classification number
(1)
(2)
9.7 Marking on outer box (corrugated box)
Customer name, purchasing order number, customer part number, Murata part number, RoHS marking (*2), quantity, etc.
9.8 Specification of outer box
Dimensions of outer box
Standard reel quantity
(mm)
Label
in outer box (reel)
W
D
H
H
186
186
93
5
D
* Above outer box size is typical. It depends on a
quantity of an order.
W
10.
Caution
10.1 Restricted 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
(6) Disaster/crime prevention equipment
(7) Traffic signal equipment
(2) Aerospace equipment
(3) Undersea equipment
(4) Power plant control equipment
(5) Medical equipment
(8) Transportation equipment (trains, ships, etc.)
(9) Data-processing equipment
(10) Applications of similar complexity and/or reliability requirements
to the applications listed in the above
10.2 Precautions on rating
Do not use the products in excess of their rated current. Doing so may cause the product to generate heat, resulting in short
circuit between wires, wire breakage, or melted solder, which may cause dropping of parts.
10.3 Fail-safe
Be sure to provide an appropriate fail-safe function on your product to prevent a second damage that may be caused by the
abnormal function or the failure of our product.
10.4 Corrosive gas
Please refrain from use since contact with environments with corrosive gases (sulfur gas [hydrogen sulfide, sulfur dioxide,
etc.], chlorine, ammonia, etc.) or oils (cutting oil, silicone oil, etc.) that have come into contact with the previously stated
corrosive gas environment will result in deterioration of product quality or an open from deterioration due to corrosion of
product electrode, etc. We will not bear any responsibility for use under these environments.
MURATA MFG CO., LTD
Spec No.: JELF243A_9139D-01
P8/13
11. Precautions for Use
This product is for use only with reflow soldering. It is designed to be mounted by soldering. If you want to use other
mounting method, for example, using a conductive adhesive, please consult us beforehand.
Also, if repeatedly subjected to temperature cycles or other thermal stress, due to the difference in the coefficient of thermal
expansion with the mounting substrate, the solder (solder fillet part) in the mounting part may crack.
The occurrence of cracks due to thermal stress is affected by the size of the land where mounted, the solder volume, and
the heat dissipation of the mounting substrate. Carefully design it when a large change in ambient temperature is assumed.
11.1 Land dimensions
The following diagram shows the recommended land dimensions for reflow soldering.
The land dimensions are designed in consideration of electrical characteristics and mountability. Use of other land
dimensions may preclude achievement of performance. In some cases, it may result in poor solderability, including positional
shift. If you use other land pattern, consider it adequately.
a
b
c
0.6 to 0.8
1.9 to 2.0
0.7 to 1.0
(in mm)
11.2 Flux and solder used
Flux
• Use a rosin-based flux that includes an activator with a chlorine conversion value of 0.06(wt)% to 0.1(wt)%.
• Do not use a highly acidic flux with a halide content exceeding 0.2(wt)% (chlorine conversion value).
• Do not use a water-soluble flux.
Solder
• Use Sn-3.0Ag-0.5Cu solder.
• Standard thickness of solder paste: 100 μm to 150 μm
If you want to use a flux other than the above, please consult our technical department.
11.3 Soldering conditions (reflow)
• 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 product 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.
Temp.
(℃)
260℃
230℃
Limit Profile
245℃±3℃
220℃
180
150
Standard Profile
30s~60s
60s max.
90s±30s
Time.(s)
Standard profile
Limit profile
Pre-heating
150°C to 180°C/90 s±30 s
Above 220°C/30 s to 60 s
245°C±3°C
150°C to 180°C/90 s±30 s
Above 230°C/60 s max.
260°C/10 s
Heating
Peak temperature
Number of reflow cycles
2 times
2 times
MURATA MFG CO., LTD
Spec No.: JELF243A_9139D-01
P9/13
11.4 Reworking with soldering iron
The following requirements must be met to rework a soldered product using a soldering iron.
Item
Requirement
150°C/approx. 1 min
350°C max.
Pre-heating
Tip temperature of soldering iron
Power consumption of soldering iron
Tip diameter of soldering iron
Soldering time
80 W max.
ø3 mm max.
3 s (+1 s, -0 s)
2 times max.
Number of reworking operations
* Avoid a direct contact of the tip of the soldering iron with the product. Such a
direction contact may cause cracks in the ceramic body due to thermal shock.
11.5 Solder volume
Solder shall be used not to increase the volume too much.
An increased solder volume increases mechanical stress on the product. Exceeding solder volume may cause the failure of
mechanical or electrical performance.
11.6 Product's location
The following shall be considered when designing and laying out PCBs.
(1) PCB shall be designed so that products are not subject to mechanical stress due to warping the board.
[Products direction]
Products shall be located in the sideways direction (length: a < b) to the mechanical stress.
a
b
Poor example
〈
〉
Good example
〈
〉
(2) Components location on PCB 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
Stress level
A > D*1
A > B
(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.
A > C
*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
Spec No.: JELF243A_9139D-01
P10/13
(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 Handling of 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
11.8 Cleaning
The product shall be cleaned under the following conditions.
(1) The cleaning temperature shall be 60°C max. If isopropyl alcohol (IPA) is used, the cleaning temperature shall be 40°C
max.
(2) Perform ultrasonic cleaning under the following conditions. Exercise caution to prevent resonance phenomenon in
mounted products and the PCB.
Item
Power
Requirement
20 W/L max.
Time
5 min max.
Frequency
(3) Cleaner
28 kHz to 40 kHz
Alcohol-based cleaner: IPA
Aqueous agent: PINE ALPHA ST-100S
(4) There shall be no residual flux or residual cleaner. When using aqueous agent, rinse the product with deionized water
adequately and completely dry it so that no cleaner is left.
* For other cleaning, consult our technical department.
11.9 Storage and transportation
Storage period
Use the product within 12 months after delivery.
If you do not use the product for more than 12 months, check solderability before using it.
Storage conditions • The products shall be stored in a room not subject to rapid changes in temperature and humidity.
The recommended temperature range is -10°C to +40°C. The recommended relative humidity
range is 15% to 85%.
Keeping the product in corrosive gases, such as sulfur, chlorine gas or acid, oxidizes the
electrode, resulting in poor solderability or corrosion of the coil wire of the product.
• Do not keep products in bulk packaging. Doing so may cause collision between the products or
between the products and other products, resulting in core chipping or wire breakage.
• Do not place the products directly on the floor; they should be placed on a palette so that they are
not affected by humidity or dust.
• Avoid keeping the products in a place exposed to direct sunlight, heat or vibration.
Transportation
Excessive vibration and impact reduces the reliability of the products. Exercise caution when
handling the products.
MURATA MFG CO., LTD
Spec No.: JELF243A_9139D-01
P11/13
11.10 Resin coating
The inductance value may change due to high cure-stress of resin to be used for coating/molding products.
A wire breakage 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 wire breakage.
So, please pay your careful attention 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.
11.11 Handling of product
• 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.
11.12 Handling with mounting equipment
• With some types of mounting equipment, a support pin pushes up the product from the bottom of the base (paper) tape
when the product is sucked with the pick-up nozzle.
When using this type of equipment, detach the support pin to prevent the breaking of wire on the product.
• In some cases, the laser recognition function of the mounting equipment may not recognize this product correctly.
Please contact us when using laser recognition. (There is no problem with the permeation and reflection type.)
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.
13. Appendix
Electrical performance: Measuring method for inductance/Q (Q measurement is applicable only when the Q value is
included in the rating table.)
Perform measurement using the method described below. (Perform correction to ensure that the inductance value is
compatible with inductors of other manufacturers.)
(1) Residual elements and stray elements of the measuring terminal can be expressed by the F parameter for the 2-pole
terminal as shown in the figure below.
(2) The product's impedance value (Zx) and measured impedance value (Zm) can be expressed as shown below, by using
the respective current and voltage for input/output.
V1
I1
V2
I2
Zm=
Zx=
MURATA MFG CO., LTD
Spec No.: JELF243A_9139D-01
P12/13
(3) Thus, the relationship between the product's impedance value (Zx) and measured impedance value (Zm) is as follows.
Here,
α = D/A = 1
β = B/D = Zsm - (1 - Yom Zsm) Zss
Zm-β
Γ = C/A = Yom
Zx=α
1-ZmΓ
Zsm: measured impedance when measuring terminal is shorted
Zss: residual impedance of short chip (= Equivalent series inductance X*1)
Yom: measured admittance when measuring terminal is open
*1 Important
X: In consideration of compatibility with other venders' products, Zss is defined as the correction value to fit
nominal inductance of other venders' products.
When calibrating the measurement, please input X value instead of the equivalent series inductance (ShortL)
for each L value.
Perform measurement of Q using the residual impedance 0.771 nH obtained through our conventional standard
measurement method.
(4) Calculate inductance Lx and Qx using the equations shown below.
Im (Zx)
Lx: inductance of chip coil
Qx: Q of chip coil
Lx=
2πf
Im (Zx)
Re (Zx)
Qx=
f: measuring frequency
Table: Equivalent series inductance to fit nominal inductance of other venders' products
Inductance
X (nH)
Equivalent series
inductance
Part number
Measuring frequency
(MHz)
LQW18AS1N6_0Z
LQW18AS1N8_0Z
LQW18AS3N3_0Z
LQW18AS3N6_0Z
LQW18AS3N9_0Z
LQW18AS4N3_0Z
LQW18AS4N7_0Z
LQW18AS5N1_0Z
LQW18AS5N6_0Z
LQW18AS6N8_0Z
LQW18AS7N5_0Z
LQW18AS8N2_0Z
LQW18AS8N7_0Z
LQW18AS9N5_0Z
LQW18AS10N_0Z
LQW18AS11N_0Z
LQW18AS12N_0Z
LQW18AS15N_0Z
LQW18AS16N_0Z
LQW18AS18N_0Z
LQW18AS22N_0Z
LQW18AS23N_0Z
LQW18AS24N_0Z
LQW18AS27N_0Z
0.131
0.061
0.111
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
0.231
0.011
0.251
0.301
0.071
-0.079
-0.019
0.201
0.281
0.221
0.021
-0.089
0.321
-0.189
-0.369
0.271
-0.429
-0.419
-0.509
0.401
0.171
MURATA MFG CO., LTD
Spec No.: JELF243A_9139D-01
Part number
P13/13
Inductance
Measuring frequency
X (nH)
Equivalent series
inductance
(MHz)
LQW18AS30N_0Z
LQW18AS33N_0Z
LQW18AS36N_0Z
LQW18AS39N_0Z
LQW18AS43N_0Z
LQW18AS47N_0Z
LQW18AS51N_0Z
LQW18AS56N_0Z
LQW18AS68N_0Z
LQW18AS72N_0Z
LQW18AS82N_0Z
LQW18ASR10_0Z
LQW18ASR11_0Z
LQW18ASR12_0Z
LQW18ASR15_0Z
LQW18ASR18_0Z
LQW18ASR20_0Z
LQW18ASR21_0Z
LQW18ASR22_0Z
LQW18ASR25_0Z
LQW18ASR27_0Z
LQW18ASR33_0Z
LQW18ASR39_0Z
-0.219
-0.589
-0.299
-0.859
0.231
250
250
250
250
250
200
200
200
200
150
150
150
150
150
150
100
100
100
100
100
100
100
100
-0.769
-0.949
-1.299
-1.739
-1.089
-1.909
-1.729
-2.829
-3.429
-4.429
-5.129
-4.629
-2.029
-5.229
-4.029
-4.329
-8.329
-13.329
MURATA MFG CO., LTD
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