LQW2UASR10F00# [MURATA]

;
LQW2UASR10F00#
型号: LQW2UASR10F00#
厂家: muRata    muRata
描述:

文件: 总13页 (文件大小:578K)
中文:  中文翻译
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Spec No.: JELF243A_0085L-01  
P1/13  
CHIP COILS (CHIP INDUCTORS) LQW2UAS□□□□00REFERENCE SPECIFICATION  
1. Scope  
This reference specification applies to chip coils (chip inductors) LQW2UAS_00 series for general electronic equipment.  
2. Part Numbering  
(Ex.)  
LQ  
W
2U  
A
S
12N  
G
0
0
L
Product Structure Dimension Application Category Inductance Tolerance Performance Electrode Packaging  
ID  
(L × W)  
and  
characteristic  
specification L: 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  
-55°C to +125°C  
-55°C to +125°C  
Inductance  
DC  
resistance  
(Ω max.)  
Self-resonant  
frequency  
(MHz min.)  
Rated  
current  
(mA)  
Customer  
Murata  
Q
(Min.)  
Nominal  
value  
Part number  
Part number  
Tolerance  
(nH)  
LQW2UAS12NG00L  
LQW2UAS12NJ00L  
LQW2UAS18NG00L  
LQW2UAS18NJ00L  
LQW2UAS22NF00L  
LQW2UAS22NG00L  
LQW2UAS22NJ00L  
LQW2UAS27NG00L  
LQW2UAS27NJ00L  
LQW2UAS33NF00L  
LQW2UAS33NG00L  
LQW2UAS33NJ00L  
LQW2UAS39NF00L  
LQW2UAS39NG00L  
LQW2UAS39NJ00L  
LQW2UAS47NF00L  
LQW2UAS47NG00L  
LQW2UAS47NJ00L  
LQW2UAS56NF00L  
LQW2UAS56NG00L  
LQW2UAS56NJ00L  
LQW2UAS68NF00L  
LQW2UAS68NG00L  
LQW2UAS68NJ00L  
LQW2UAS82NF00L  
LQW2UAS82NG00L  
LQW2UAS82NJ00L  
LQW2UASR10F00L  
LQW2UASR10G00L  
LQW2UASR10J00L  
12  
12  
18  
18  
22  
22  
22  
27  
27  
33  
33  
33  
39  
39  
39  
47  
47  
47  
56  
56  
56  
68  
68  
68  
82  
82  
82  
100  
100  
100  
G: ±2%  
J: ±5%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
50  
50  
50  
50  
55  
55  
55  
55  
55  
60  
60  
60  
60  
60  
60  
65  
65  
65  
65  
65  
65  
65  
65  
65  
60  
60  
60  
60  
60  
60  
0.09  
0.09  
0.11  
0.11  
0.12  
0.12  
0.12  
0.13  
0.13  
0.14  
0.14  
0.14  
0.15  
0.15  
0.15  
0.16  
0.16  
0.16  
0.18  
0.18  
0.18  
0.20  
0.20  
0.20  
0.22  
0.22  
0.22  
0.56  
0.56  
0.56  
3300  
3300  
2500  
2500  
2400  
2400  
2400  
1600  
1600  
1600  
1600  
1600  
1500  
1500  
1500  
1500  
1500  
1500  
1300  
1300  
1300  
1300  
1300  
1300  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
650  
650  
650  
MURATA MFG CO., LTD  
Spec No.: JELF243A_0085L-01  
Customer  
P2/13  
Rated  
current  
(mA)  
Inductance  
Nominal  
DC  
resistance  
(Ω max.)  
Self-resonant  
frequency  
(MHz min.)  
Murata  
Q
(Min.)  
Part number  
Part number  
value  
(nH)  
Tolerance  
LQW2UASR12F00L  
LQW2UASR12G00L  
LQW2UASR12J00L  
LQW2UASR15F00L  
LQW2UASR15G00L  
LQW2UASR15J00L  
LQW2UASR18F00L  
LQW2UASR18G00L  
LQW2UASR18J00L  
LQW2UASR22F00L  
LQW2UASR22G00L  
LQW2UASR22J00L  
LQW2UASR27F00L  
LQW2UASR27G00L  
LQW2UASR27J00L  
LQW2UASR33F00L  
LQW2UASR33G00L  
LQW2UASR33J00L  
LQW2UASR39F00L  
LQW2UASR39G00L  
LQW2UASR39J00L  
LQW2UASR47F00L  
LQW2UASR47G00L  
LQW2UASR47J00L  
LQW2UASR56F00L  
LQW2UASR56G00L  
LQW2UASR56J00L  
LQW2UASR62F00L  
LQW2UASR62G00L  
LQW2UASR62J00L  
LQW2UASR68F00L  
LQW2UASR68G00L  
LQW2UASR68J00L  
LQW2UASR75F00L  
LQW2UASR75G00L  
LQW2UASR75J00L  
LQW2UASR82F00L  
LQW2UASR82G00L  
LQW2UASR82J00L  
LQW2UASR91F00L  
LQW2UASR91G00L  
LQW2UASR91J00L  
LQW2UAS1R0F00L  
LQW2UAS1R0G00L  
LQW2UAS1R0J00L  
LQW2UAS1R2J00L  
120  
120  
120  
150  
150  
150  
180  
180  
180  
220  
220  
220  
270  
270  
270  
330  
330  
330  
390  
390  
390  
470  
470  
470  
560  
560  
560  
620  
620  
620  
680  
680  
680  
750  
750  
750  
820  
820  
820  
910  
910  
910  
1000  
1000  
1000  
1200  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
F: ±1%  
G: ±2%  
J: ±5%  
J: ±5%  
60  
60  
60  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
45  
35  
35  
35  
35  
35  
35  
35  
0.63  
0.63  
0.63  
0.70  
0.70  
0.70  
0.77  
0.77  
0.77  
0.84  
0.84  
0.84  
0.91  
0.91  
0.91  
1.05  
1.05  
1.05  
1.12  
1.12  
1.12  
1.19  
1.19  
1.19  
1.33  
1.33  
1.33  
1.40  
1.40  
1.40  
1.47  
1.47  
1.47  
1.54  
1.54  
1.54  
1.61  
1.61  
1.61  
1.68  
1.68  
1.68  
1.75  
1.75  
1.75  
2.0  
950  
950  
950  
850  
850  
850  
750  
750  
750  
700  
700  
700  
600  
600  
600  
570  
570  
570  
500  
500  
500  
450  
450  
450  
415  
415  
415  
375  
375  
375  
375  
375  
375  
360  
360  
360  
350  
350  
350  
320  
320  
320  
290  
290  
290  
210  
650  
650  
650  
580  
580  
580  
620  
620  
620  
500  
500  
500  
500  
500  
500  
450  
450  
450  
470  
470  
470  
470  
470  
470  
400  
400  
400  
300  
300  
300  
400  
400  
400  
360  
360  
360  
400  
400  
400  
380  
380  
380  
370  
370  
370  
310  
MURATA MFG CO., LTD  
Spec No.: JELF243A_0085L-01  
Customer  
P3/13  
Rated  
current  
(mA)  
Inductance  
Nominal  
DC  
resistance  
(Ω max.)  
Self-resonant  
frequency  
(MHz min.)  
Murata  
Q
(Min.)  
Part number  
Part number  
value  
(nH)  
Tolerance  
LQW2UAS1R5J00L  
LQW2UAS1R8J00L  
LQW2UAS2R2J00L  
LQW2UAS2R7J00L  
LQW2UAS3R3J00L  
LQW2UAS3R9J00L  
LQW2UAS4R7J00L  
1500  
1800  
2200  
2700  
3300  
3900  
4700  
J: ±5%  
J: ±5%  
J: ±5%  
J: ±5%  
J: ±5%  
J: ±5%  
J: ±5%  
28  
28  
28  
22  
22  
20  
20  
2.3  
2.6  
2.8  
3.2  
3.4  
3.6  
4.0  
120  
140  
130  
110  
90  
330  
300  
280  
290  
290  
260  
260  
70  
60  
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): 0.039 g  
6. Marking  
No marking.  
MURATA MFG CO., LTD  
Spec No.: JELF243A_0085L-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  
50 MHz 12 nH to 82 nH  
25 MHz 100 nH to 1000 nH  
7.9 MHz 1200 nH to 4700 nH  
500 MHz 12 nH to 15 nH  
Q
350 MHz 18 nH to 120 nH  
100 MHz 150 nH to 820 nH  
50 MHz 910 nH to 2200 nH  
25 MHz 2700 nH to 4700 nH  
Measuring conditions:  
Measurement signal level: Approx. 0 dBm  
Measurement terminal distance: 1.5 mm  
Electrical length: 10.0 mm  
Weight: Approx. 1 N to 3 N  
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  
"16. 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  
7.5 Rated current  
Product temperature rise: 40°C max.  
Apply the rated current specified in chapter 3.  
8. Mechanical Performance  
No.  
Item  
Specification  
Test method  
8.1 Shear test  
No significant mechanical damage or no Test substrate: glass-epoxy substrate  
sign of electrode peeling off shall be  
observed.  
Force application direction:  
Applying force: 10 N  
Holding time: 5 s±1 s  
MURATA MFG CO., LTD  
Spec No.: JELF243A_0085L-01  
No. Item  
P5/13  
Specification  
Test method  
8.2 Bending test  
No significant mechanical damage or no Test substrate: glass-epoxy substrate (100 mm × 40  
sign of electrode peeling off shall be  
observed.  
mm × 1.0 mm)  
Pressurizing speed: 1 mm/s  
Deflection: 3 mm  
Holding time: 5 s  
8.3 Vibration  
Appearance shall have no significant  
mechanical damage.  
Oscillation frequency: 10 Hz to 2000 Hz to 10 Hz, for  
approx. 15 min  
Total amplitude: total amplitude of 3.0 mm or  
acceleration amplitude of 196 m/s2, whichever is  
smaller  
Test time: 3 directions perpendicular to each other, 2 h  
for each direction (6 h in total)  
8.4 Solderability  
90% or more of the outer electrode shall Flux: immersed in ethanol solution [including an  
be covered with new solder seamlessly. activator with a chlorine conversion value of 0.06(wt)%]  
with a rosin content of 25(wt)% for 5 s to 10 s.  
Solder: Sn-3.0Ag-0.5Cu solder  
Pre-heating: 150°C±10°C/60 s to 90 s  
Solder temperature: 240°C±5°C  
Immersion time: 3 s±1 s  
8.5 Resistance to  
soldering heat  
Appearance: No significant mechanical  
damage shall be observed.  
Inductance change rate: within ±5%  
Flux: immersed in ethanol solution [including an  
activator with a chlorine conversion value of 0.06(wt)%]  
with a rosin content of 25(wt)% for 5 s to 10 s.  
Solder: Sn-3.0Ag-0.5Cu solder  
Pre-heating: 150°C±10°C/60 s to 90 s  
Solder temperature: 270°C±5°C  
Immersion time: 10 s±1 s  
Post-treatment: left at a room condition for 24 h±2 h  
9. Environmental Performance  
The product is soldered on a substrate for test.  
No.  
Item  
Specification  
Test method  
9.1 Heat resistance  
9.2 Cold resistance  
9.3 Humidity  
Appearance: No significant mechanical Temperature: 125°C±2°C  
damage shall be observed.  
Test time: 1000 h (+48 h, -0 h)  
Inductance change rate: within ±5%  
Q change rate: within ±20%  
Post-treatment: left at a room condition for 24 h±2 h  
Appearance: No significant mechanical Temperature: -55°C±2°C  
damage shall be observed.  
Test time: 1000 h (+48 h, -0 h)  
Inductance change rate: within ±5%  
Q change rate: within ±20%  
Post-treatment: left at a room condition for 24 h±2 h  
Appearance: No significant mechanical Temperature: 85°C±2°C  
damage shall be observed.  
Humidity: 85% (RH)  
Inductance change rate: within ±5%  
Q change rate: within ±20%  
Test time: 1000 h (+48 h, -0 h)  
Post-treatment: left at a room condition for 24 h±2 h  
9.4 Temperature cycle Appearance: No significant mechanical Single cycle conditions:  
damage shall be observed.  
Step 1: -55°C±2°C/30 min±3 min  
Inductance change rate: within ±5%  
Q change rate: within ±20%  
Step 2: ordinary temperature/10 min to 15 min  
Step 3: +125°C±2°C/30 min±3 min  
Step 4: ordinary temperature/10 min to 15 min  
Number of testing: 10 cycles  
Post-treatment: left at a room condition for 24 h±2 h  
MURATA MFG CO., LTD  
Spec No.: JELF243A_0085L-01  
P6/13  
10. Specification of Packaging  
10.1 Appearance and dimensions of tape (8 mm width/plastic tape)  
A
B
t
2.7±0.1  
2.8±0.1  
2.15±0.1  
0.25±0.05  
t'  
(in mm)  
* The dimensions of the cavity are measured at its bottom.  
10.2 Taping specifications  
Packing quantity  
2000 pcs/reel  
(Standard quantity)  
Packing method  
Feed hole position  
Joint  
The products are placed in embossed cavities of a plastic tape and sealed by a cover tape.  
The feed holes on the plastic tape are on the right side when the cover tape is pulled toward the user.  
The plastic tape and the cover 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.  
10.3 Break down force of tape  
Break down force of cover tape  
10 N min.  
10.4 Peeling off force of cover 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.)  
Cover tape  
165 to 180 degree  
F
Plastic tape  
10.5 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_0085L-01  
P7/13  
10.6 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)  
10.7 Marking on outer box (corrugated box)  
Customer name, purchasing order number, customer part number, Murata part number, RoHS marking (*2), quantity, etc.  
10.8 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
11.  
Caution  
11.1 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  
(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/crime  
prevention equipment  
(9) Data-processing  
equipment  
(10) Applications of similar complexity and/or reliability  
requirements to the applications listed in the above  
11.2 Precautions on rating  
Avoid using in exceeded the rated temperature range, rated voltage, or rated current.  
Usage when the ratings are exceeded could lead to wire breakage, burning, or other serious fault.  
11.3 Inrush current  
If an inrush current (or pulse current or rush current) that significantly exceeds the rated current is applied to the product,  
overheating could occur, resulting in wire breakage, burning, or other serious fault.  
11.4 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_0085L-01  
P8/13  
12. 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.  
12.1 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.  
(in mm)  
Do not use gilded pattern. A copper wire may cause open by dissolution of metallization.  
12.2 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.  
MURATA MFG CO., LTD  
Spec No.: JELF243A_0085L-01  
P9/13  
12.3 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  
12.4 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.  
12.5 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.  
MURATA MFG CO., LTD  
Spec No.: JELF243A_0085L-01  
P10/13  
12.6 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.  
(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.  
12.7 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  
MURATA MFG CO., LTD  
Spec No.: JELF243A_0085L-01  
P11/13  
12.8 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.  
12.9 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.  
12.10 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.  
12.11 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.  
12.12 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.  
13.  
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  
Spec No.: JELF243A_0085L-01  
P12/13  
14. 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=  
(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  
MURATA MFG CO., LTD  
Spec No.: JELF243A_0085L-01  
P13/13  
Table: Equivalent series inductance to fit nominal inductance of other venders' products  
Inductance  
X (nH)  
Equivalent series  
Inductance  
Part number  
Measuring frequency  
(MHz)  
LQW2UAS12N_00  
LQW2UAS18N_00  
LQW2UAS22N_00  
LQW2UAS27N_00  
LQW2UAS33N_00  
LQW2UAS39N_00  
LQW2UAS47N_00  
LQW2UAS56N_00  
LQW2UAS68N_00  
LQW2UAS82N_00  
LQW2UASR10_00  
LQW2UASR12_00  
LQW2UASR15_00  
LQW2UASR18_00  
LQW2UASR22_00  
LQW2UASR27_00  
LQW2UASR33_00  
LQW2UASR39_00  
LQW2UASR47_00  
LQW2UASR56_00  
LQW2UASR62_00  
LQW2UASR68_00  
LQW2UASR75_00  
LQW2UASR82_00  
LQW2UASR91_00  
LQW2UAS1R0_00  
LQW2UAS1R2_00  
LQW2UAS1R5_00  
LQW2UAS1R8_00  
LQW2UAS2R2_00  
LQW2UAS2R7_00  
LQW2UAS3R3_00  
LQW2UAS3R9_00  
LQW2UAS4R7_00  
0.511  
0.321  
50  
50  
50  
50  
50  
50  
50  
50  
50  
50  
25  
25  
25  
25  
25  
25  
25  
25  
25  
25  
25  
25  
25  
25  
25  
25  
7.9  
7.9  
7.9  
7.9  
7.9  
7.9  
7.9  
7.9  
0.941  
0.651  
1.711  
0.741  
2.071  
2.351  
2.281  
2.921  
3.351  
3.871  
4.371  
5.271  
3.271  
8.871  
12.771  
22.271  
20.971  
24.971  
28.371  
44.271  
35.371  
47.171  
56.371  
79.171  
15.771  
5.771  
6.771  
25.771  
63.771  
91.771  
67.771  
163.771  
MURATA MFG CO., LTD  

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