LQW15AN8N3D1Z# [MURATA]

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LQW15AN8N3D1Z#
型号: LQW15AN8N3D1Z#
厂家: muRata    muRata
描述:

文件: 总11页 (文件大小:520K)
中文:  中文翻译
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Spec No.: JELF243A_9115E-01  
P1/11  
CHIP COILS (CHIP INDUCTORS) LQW15AN□□□□1Z□  
Murata Standard Specification [AEC-Q200]  
1. Scope  
This specification applies to chip coils (chip inductors) LQW15AN_1Z series for automotive electronics based on AEC-Q200  
except for power trains and safeties.  
2. Part Numbering  
(Ex.)  
LQ  
W
15  
A
N
1N3  
C
1
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  
-55°C to +125°C  
-55°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  
(GHz min.)  
(nH)  
LQW15AN1N3C1ZD  
LQW15AN1N3D1ZD  
LQW15AN1N4C1ZD  
LQW15AN1N4D1ZD  
LQW15AN2N2C1ZD  
LQW15AN2N2D1ZD  
LQW15AN2N3C1ZD  
LQW15AN2N3D1ZD  
LQW15AN2N4D1ZD  
LQW15AN3N3D1ZD  
LQW15AN3N4C1ZD  
LQW15AN3N4D1ZD  
LQW15AN3N5C1ZD  
LQW15AN3N5D1ZD  
LQW15AN3N6C1ZD  
LQW15AN3N6D1ZD  
LQW15AN3N8C1ZD  
LQW15AN3N8D1ZD  
LQW15AN3N9D1ZD  
LQW15AN4N0C1ZD  
LQW15AN4N0D1ZD  
LQW15AN4N2C1ZD  
LQW15AN4N2D1ZD  
LQW15AN4N7D1ZD  
LQW15AN5N1C1ZD  
LQW15AN5N1D1ZD  
LQW15AN5N2C1ZD  
LQW15AN5N2D1ZD  
LQW15AN5N3C1ZD  
1.3  
1.3  
1.4  
1.4  
2.2  
2.2  
2.3  
2.3  
2.4  
3.3  
3.4  
3.4  
3.5  
3.5  
3.6  
3.6  
3.8  
3.8  
3.9  
4.0  
4.0  
4.2  
4.2  
4.7  
5.1  
5.1  
5.2  
5.2  
5.3  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
D: ±0.5 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
20  
20  
25  
25  
25  
25  
25  
25  
25  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
0.017  
0.017  
0.019  
0.019  
0.027  
0.027  
0.027  
0.027  
0.027  
0.040  
0.040  
0.040  
0.040  
0.040  
0.040  
0.040  
0.040  
0.040  
0.040  
0.051  
0.051  
0.051  
0.051  
0.051  
0.051  
0.051  
0.051  
0.051  
0.051  
16  
16  
15  
15  
14  
14  
14  
14  
14  
12  
12  
12  
9.5  
9.5  
9.5  
9.5  
7
1200  
1200  
1100  
1100  
1000  
1000  
1000  
1000  
1000  
900  
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
900  
900  
900  
900  
900  
900  
900  
7
900  
7
900  
6.5  
6.5  
6.5  
6.5  
8
800  
800  
800  
800  
800  
8
800  
8
800  
8
800  
8
800  
8
800  
MURATA MFG CO., LTD  
Spec No.: JELF243A_9115E-01  
P2/11  
ESD  
Rank  
6: 25 kV  
Inductance  
Nominal  
DC  
resistance  
(Ω max.)  
Self-resonant Rated  
Customer  
Murata  
Q
(Min.)  
frequency  
current  
(mA)  
Part number  
Part number  
value  
(nH)  
Tolerance  
(GHz min.)  
LQW15AN5N3D1ZD  
LQW15AN5N4C1ZD  
LQW15AN5N4D1ZD  
LQW15AN5N5C1ZD  
LQW15AN5N5D1ZD  
LQW15AN5N6C1ZD  
LQW15AN5N6D1ZD  
LQW15AN5N7C1ZD  
LQW15AN5N7D1ZD  
LQW15AN5N9C1ZD  
LQW15AN5N9D1ZD  
LQW15AN6N0C1ZD  
LQW15AN6N0D1ZD  
LQW15AN6N1C1ZD  
LQW15AN6N1D1ZD  
LQW15AN7N4C1ZD  
LQW15AN7N4D1ZD  
LQW15AN7N6C1ZD  
LQW15AN7N6D1ZD  
LQW15AN7N7C1ZD  
LQW15AN7N7D1ZD  
LQW15AN7N8C1ZD  
LQW15AN7N8D1ZD  
LQW15AN7N9C1ZD  
LQW15AN7N9D1ZD  
LQW15AN8N0C1ZD  
LQW15AN8N0D1ZD  
LQW15AN8N1C1ZD  
LQW15AN8N1D1ZD  
LQW15AN8N3C1ZD  
LQW15AN8N3D1ZD  
LQW15AN8N4C1ZD  
LQW15AN8N4D1ZD  
5.3  
5.4  
5.4  
5.5  
5.5  
5.6  
5.6  
5.7  
5.7  
5.9  
5.9  
6.0  
6.0  
6.1  
6.1  
7.4  
7.4  
7.6  
7.6  
7.7  
7.7  
7.8  
7.8  
7.9  
7.9  
8.0  
8.0  
8.1  
8.1  
8.3  
8.3  
8.4  
8.4  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
C: ±0.2 nH  
D: ±0.5 nH  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
30  
0.051  
0.051  
0.051  
0.051  
0.051  
0.051  
0.051  
0.051  
0.051  
0.056  
0.056  
0.056  
0.056  
0.056  
0.056  
0.058  
0.058  
0.058  
0.058  
0.058  
0.058  
0.058  
0.058  
0.079  
0.079  
0.079  
0.079  
0.079  
0.079  
0.079  
0.079  
0.079  
0.079  
8
800  
800  
800  
800  
800  
800  
800  
800  
800  
760  
760  
760  
760  
760  
760  
750  
750  
750  
750  
750  
750  
750  
750  
640  
640  
640  
640  
640  
640  
640  
640  
640  
640  
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
8
8
8
8
8
8
8
8
7.7  
7.7  
7.7  
7.7  
7.7  
7.7  
6.8  
6.8  
6.8  
6.8  
6.8  
6.8  
6.8  
6.8  
7.5  
7.5  
7.5  
7.5  
7.5  
7.5  
7.5  
7.5  
7.5  
7.5  
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  
MURATA MFG CO., LTD  
Spec No.: JELF243A_9115E-01  
P3/11  
5. Appearance and Dimensions  
Unit mass (typical value): 0.0008 g  
6. Marking  
No marking.  
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: 100 MHz  
Q: 250 MHz  
Measuring conditions:  
Measurement signal level: Approx. 0 dBm  
Measurement terminal distance: 0.5 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.  
Measurement example:  
7.2  
Q
Meet chapter 3 ratings.  
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  
7.5 Rated current  
Product temperature rise: 20°C max.  
Apply the rated current specified in chapter 3.  
8. AEC-Q200 Requirement  
8.1 Performance [based on table 5 for magnetics (inductors/transformer) AEC-Q200 Rev. D issued June 1,  
MURATA MFG CO., LTD  
Spec No.: JELF243A_9115E-01  
P4/11  
2010]  
AEC-Q200  
Test method  
Murata specification/deviation  
Meet table A after testing.  
No.  
3
Stress  
High  
1000 h at 125°C  
temperature  
exposure  
Set for 24 h at room condition, then  
measured.  
Table A  
Appearance  
No damage  
Inductance change rate (at 100 MHz) Within ±5%  
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.  
Set for 24 h at room condition, then  
measured.  
Meet table A after testing.  
Meet table A after testing.  
Operational life Apply 125°C 1000 h  
Set for 24 h at room condition, then  
measured.  
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  
No-heating  
Pre-heating: 150°C±10°C, 60 s to 90 s  
soldering heat Solder temperature  
260°C±5°C  
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  
No defects  
Murata deviation request: 5 N for 60 s  
MURATA MFG CO., LTD  
Spec No.: JELF243A_9115E-01  
P5/11  
9. Specification of Packaging  
9.1 Appearance and dimensions of tape (8 mm width/paper tape)  
(in mm)  
Inductance  
1.3 nH, 1.4 nH  
2.2 nH to 8.4 nH  
A (in mm)  
0.69±0.03  
0.66±0.03  
9.2 Taping specifications  
Packing quantity  
10000 pcs/reel  
(Standard quantity)  
Packing method  
Feed hole position  
Joint  
The products are placed in embossed cavities of a base tape and sealed by a cover tape.  
The feed holes on the base tape are on the right side when the cover tape is pulled toward the user.  
The base 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.  
9.3 Break down force of tape  
Break down force of cover tape  
5 N min.  
9.4 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  
F
165 to 180  
°
Base tape  
MURATA MFG CO., LTD  
Spec No.: JELF243A_9115E-01  
P6/11  
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.)  
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
MURATA MFG CO., LTD  
Spec No.: JELF243A_9115E-01  
P7/11  
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.  
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
0.50  
1.2  
0.65  
(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.  
MURATA MFG CO., LTD  
Spec No.: JELF243A_9115E-01  
P8/11  
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  
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.  
MURATA MFG CO., LTD  
Spec No.: JELF243A_9115E-01  
P9/11  
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.  
(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  
MURATA MFG CO., LTD  
Spec No.: JELF243A_9115E-01  
P10/11  
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.  
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.)  
112.  
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_9115E-01  
P11/11  
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 for the error deriving from the measuring  
terminal.)  
(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 of short chip  
Zss: residual impedance of short chip (0.556 nH)  
Yom: measured admittance when measuring terminal is open  
(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  

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