Spec No.: JELF243B_0010T-01
P1/13
CHIP COILS (CHIP INDUCTORS) LQG15HS□□□□02□ REFERENCE SPECIFICATION
1. Scope
This reference specification applies to chip coils (chip inductors) LQG15HS_02 series for general electronic equipment.
2. Part Numbering
(Ex.)
LQ
G
15
Product Structure Dimension
ID
(L × W)
H
S
1N0
Application Category Inductance
and
characteristic
*B: Bulk packing is also available.
S
Tolerance
0
Performance
2
Electrode
specification
D
Packaging
D: taping
*B: bulk
3. Part Number and Rating
Operating temperature range
Storage temperature range
-55°C to +125°C
-55°C to +125°C
Inductance
Customer
Part number
Murata
Part number
Nominal
value
(nH)
Tolerance
Q
(Min.)
DC
resistance
(Ω max.)
Self-resonant
frequency
(MHz min.)
Rated current
(mA)
LQG15HS1N0B02D
1.0
B: ±0.1 nH
8
0.07
10000
1000
LQG15HS1N0C02D
1.0
C: ±0.2 nH
8
0.07
10000
1000
LQG15HS1N0S02D
1.0
S: ±0.3 nH
8
0.07
10000
1000
LQG15HS1N1B02D
1.1
B: ±0.1 nH
8
0.07
6000
1000
LQG15HS1N1C02D
1.1
C: ±0.2 nH
8
0.07
6000
1000
LQG15HS1N1S02D
1.1
S: ±0.3 nH
8
0.07
6000
1000
LQG15HS1N2B02D
1.2
B: ±0.1 nH
8
0.07
6000
1000
LQG15HS1N2C02D
1.2
C: ±0.2 nH
8
0.07
6000
1000
LQG15HS1N2S02D
1.2
S: ±0.3 nH
8
0.07
6000
1000
LQG15HS1N3B02D
1.3
B: ±0.1 nH
8
0.07
6000
1000
LQG15HS1N3C02D
1.3
C: ±0.2 nH
8
0.07
6000
1000
LQG15HS1N3S02D
1.3
S: ±0.3 nH
8
0.07
6000
1000
LQG15HS1N5B02D
1.5
B: ±0.1 nH
8
0.07
6000
1000
LQG15HS1N5C02D
1.5
C: ±0.2 nH
8
0.07
6000
1000
LQG15HS1N5S02D
1.5
S: ±0.3 nH
8
0.07
6000
1000
LQG15HS1N6B02D
1.6
B: ±0.1 nH
8
0.07
6000
1000
LQG15HS1N6C02D
1.6
C: ±0.2 nH
8
0.07
6000
1000
LQG15HS1N6S02D
1.6
S: ±0.3 nH
8
0.07
6000
1000
LQG15HS1N8B02D
1.8
B: ±0.1 nH
8
0.08
6000
950
LQG15HS1N8C02D
1.8
C: ±0.2 nH
8
0.08
6000
950
LQG15HS1N8S02D
1.8
S: ±0.3 nH
8
0.08
6000
950
LQG15HS2N0B02D
2.0
B: ±0.1 nH
8
0.09
6000
900
LQG15HS2N0C02D
2.0
C: ±0.2 nH
8
0.09
6000
900
LQG15HS2N0S02D
2.0
S: ±0.3 nH
8
0.09
6000
900
LQG15HS2N2B02D
2.2
B: ±0.1 nH
8
0.09
6000
900
LQG15HS2N2C02D
2.2
C: ±0.2 nH
8
0.09
6000
900
LQG15HS2N2S02D
2.2
S: ±0.3 nH
8
0.09
6000
900
LQG15HS2N4B02D
2.4
B: ±0.1 nH
8
0.11
6000
850
LQG15HS2N4C02D
2.4
C: ±0.2 nH
8
0.11
6000
850
LQG15HS2N4S02D
2.4
S: ±0.3 nH
8
0.11
6000
850
MURATA MFG CO., LTD
Spec No.: JELF243B_0010T-01
P2/13
Inductance
Customer
Part number
Murata
Part number
Nominal
value
(nH)
Tolerance
Q
(Min.)
DC
resistance
(Ω max.)
Self-resonant
frequency
(MHz min.)
Rated current
(mA)
LQG15HS2N7B02D
2.7
B: ±0.1 nH
8
0.12
6000
800
LQG15HS2N7C02D
2.7
C: ±0.2 nH
8
0.12
6000
800
LQG15HS2N7S02D
2.7
S: ±0.3 nH
8
0.12
6000
800
LQG15HS3N0B02D
3.0
B: ±0.1 nH
8
0.125
6000
800
LQG15HS3N0C02D
3.0
C: ±0.2 nH
8
0.125
6000
800
LQG15HS3N0S02D
3.0
S: ±0.3 nH
8
0.125
6000
800
LQG15HS3N3B02D
3.3
B: ±0.1 nH
8
0.125
6000
800
LQG15HS3N3C02D
3.3
C: ±0.2 nH
8
0.125
6000
800
LQG15HS3N3S02D
3.3
S: ±0.3 nH
8
0.125
6000
800
LQG15HS3N6B02D
3.6
B: ±0.1 nH
8
0.14
6000
750
LQG15HS3N6C02D
3.6
C: ±0.2 nH
8
0.14
6000
750
LQG15HS3N6S02D
3.6
S: ±0.3 nH
8
0.14
6000
750
LQG15HS3N9B02D
3.9
B: ±0.1 nH
8
0.14
6000
750
LQG15HS3N9C02D
3.9
C: ±0.2 nH
8
0.14
6000
750
LQG15HS3N9S02D
3.9
S: ±0.3 nH
8
0.14
6000
750
LQG15HS4N3B02D
4.3
B: ±0.1 nH
8
0.14
6000
750
LQG15HS4N3C02D
4.3
C: ±0.2 nH
8
0.14
6000
750
LQG15HS4N3S02D
4.3
S: ±0.3 nH
8
0.14
6000
750
LQG15HS4N7B02D
4.7
B: ±0.1 nH
8
0.16
6000
700
LQG15HS4N7C02D
4.7
C: ±0.2 nH
8
0.16
6000
700
LQG15HS4N7S02D
4.7
S: ±0.3 nH
8
0.16
6000
700
LQG15HS5N1B02D
5.1
B: ±0.1 nH
8
0.18
5300
650
LQG15HS5N1C02D
5.1
C: ±0.2 nH
8
0.18
5300
650
LQG15HS5N1S02D
5.1
S: ±0.3 nH
8
0.18
5300
650
LQG15HS5N6B02D
5.6
B: ±0.1 nH
8
0.18
4500
650
LQG15HS5N6C02D
5.6
C: ±0.2 nH
8
0.18
4500
650
LQG15HS5N6S02D
5.6
S: ±0.3 nH
8
0.18
4500
650
LQG15HS6N2B02D
6.2
B: ±0.1 nH
8
0.20
4500
600
LQG15HS6N2C02D
6.2
C: ±0.2 nH
8
0.20
4500
600
LQG15HS6N2S02D
6.2
S: ±0.3 nH
8
0.20
4500
600
LQG15HS6N8G02D
6.8
G: ±2%
8
0.22
4500
600
LQG15HS6N8H02D
6.8
H: ±3%
8
0.22
4500
600
LQG15HS6N8J02D
6.8
J: ±5%
8
0.22
4500
600
LQG15HS7N5G02D
7.5
G: ±2%
8
0.24
4200
550
LQG15HS7N5H02D
7.5
H: ±3%
8
0.24
4200
550
LQG15HS7N5J02D
7.5
J: ±5%
8
0.24
4200
550
LQG15HS8N2G02D
8.2
G: ±2%
8
0.24
3700
550
LQG15HS8N2H02D
8.2
H: ±3%
8
0.24
3700
550
LQG15HS8N2J02D
8.2
J: ±5%
8
0.24
3700
550
LQG15HS9N1G02D
9.1
G: ±2%
8
0.26
3400
500
LQG15HS9N1H02D
9.1
H: ±3%
8
0.26
3400
500
LQG15HS9N1J02D
9.1
J: ±5%
8
0.26
3400
500
LQG15HS10NG02D
10
G: ±2%
8
0.26
3400
500
LQG15HS10NH02D
10
H: ±3%
8
0.26
3400
500
LQG15HS10NJ02D
10
J: ±5%
8
0.26
3400
500
MURATA MFG CO., LTD
Spec No.: JELF243B_0010T-01
P3/13
Inductance
Customer
Part number
Tolerance
Q
(Min.)
DC
resistance
(Ω max.)
Self-resonant
frequency
(MHz min.)
Rated current
(mA)
12
G: ±2%
8
0.28
3000
500
12
H: ±3%
8
0.28
3000
500
Murata
Part number
Nominal
value
(nH)
LQG15HS12NG02D
LQG15HS12NH02D
LQG15HS12NJ02D
12
J: ±5%
8
0.28
3000
500
LQG15HS15NG02D
15
G: ±2%
8
0.32
2500
450
LQG15HS15NH02D
15
H: ±3%
8
0.32
2500
450
LQG15HS15NJ02D
15
J: ±5%
8
0.32
2500
450
LQG15HS18NG02D
18
G: ±2%
8
0.36
2200
400
LQG15HS18NH02D
18
H: ±3%
8
0.36
2200
400
LQG15HS18NJ02D
18
J: ±5%
8
0.36
2200
400
LQG15HS22NG02D
22
G: ±2%
8
0.42
1900
350
LQG15HS22NH02D
22
H: ±3%
8
0.42
1900
350
LQG15HS22NJ02D
22
J: ±5%
8
0.42
1900
350
LQG15HS27NG02D
27
G: ±2%
8
0.46
1700
350
LQG15HS27NH02D
27
H: ±3%
8
0.46
1700
350
LQG15HS27NJ02D
27
J: ±5%
8
0.46
1700
350
LQG15HS33NG02D
33
G: ±2%
8
0.58
1600
350
LQG15HS33NH02D
33
H: ±3%
8
0.58
1600
350
LQG15HS33NJ02D
33
J: ±5%
8
0.58
1600
350
LQG15HS39NG02D
39
G: ±2%
8
0.65
1200
300
LQG15HS39NH02D
39
H: ±3%
8
0.65
1200
300
LQG15HS39NJ02D
39
J: ±5%
8
0.65
1200
300
LQG15HS47NG02D
47
G: ±2%
8
0.72
1000
300
LQG15HS47NH02D
47
H: ±3%
8
0.72
1000
300
LQG15HS47NJ02D
47
J: ±5%
8
0.72
1000
300
LQG15HS56NG02D
56
G: ±2%
8
0.82
800
250
LQG15HS56NH02D
56
H: ±3%
8
0.82
800
250
LQG15HS56NJ02D
56
J: ±5%
8
0.82
800
250
LQG15HS68NG02D
68
G: ±2%
8
0.92
800
250
LQG15HS68NH02D
68
H: ±3%
8
0.92
800
250
LQG15HS68NJ02D
68
J: ±5%
8
0.92
800
250
LQG15HS82NG02D
82
G: ±2%
8
1.20
700
200
LQG15HS82NH02D
82
H: ±3%
8
1.20
700
200
LQG15HS82NJ02D
82
J: ±5%
8
1.20
700
200
LQG15HSR10G02D
100
G: ±2%
8
1.25
600
200
LQG15HSR10H02D
100
H: ±3%
8
1.25
600
200
LQG15HSR10J02D
100
J: ±5%
8
1.25
600
200
LQG15HSR12G02D
120
G: ±2%
8
1.30
600
200
LQG15HSR12H02D
120
H: ±3%
8
1.30
600
200
LQG15HSR12J02D
120
J: ±5%
8
1.30
600
200
LQG15HSR15G02D
150
G: ±2%
8
2.99
550
150
LQG15HSR15H02D
150
H: ±3%
8
2.99
550
150
LQG15HSR15J02D
150
J: ±5%
8
2.99
550
150
LQG15HSR18G02D
180
G: ±2%
8
3.38
500
150
LQG15HSR18H02D
180
H: ±3%
8
3.38
500
150
LQG15HSR18J02D
180
J: ±5%
8
3.38
500
150
MURATA MFG CO., LTD
Spec No.: JELF243B_0010T-01
P4/13
Inductance
Customer
Part number
Q
(Min.)
DC
resistance
(Ω max.)
Self-resonant
frequency
(MHz min.)
Murata
Part number
Nominal
value
(nH)
Tolerance
Rated current
(mA)
LQG15HSR22G02D
220
G: ±2%
8
3.77
450
120
LQG15HSR22H02D
220
H: ±3%
8
3.77
450
120
LQG15HSR22J02D
220
J: ±5%
8
3.77
450
120
LQG15HSR27G02D
270
G: ±2%
8
4.94
400
110
LQG15HSR27H02D
270
H: ±3%
8
4.94
400
110
LQG15HSR27J02D
270
J: ±5%
8
4.94
400
110
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): 0.001 g
6. Marking
MURATA MFG CO., LTD
Spec No.: JELF243B_0010T-01
P5/13
7. Electrical Performance
No.
Item
7.1 Inductance
7.2 Q
7.3 DC resistance
7.4 Self-resonant
frequency
7.5 Rated current
Specification
Meet chapter 3 ratings.
Meet chapter 3 ratings.
Meet chapter 3 ratings.
Meet chapter 3 ratings.
Product temperature rise: 25°C max.
Test method
Measuring equipment: Keysight E4991A or the
equivalent
Measuring frequency: 100 MHz
Measuring conditions:
Measurement signal level: Approx. 0 dBm
Measurement terminal distance: 0.5 mm
Electrical length: 10 mm
Weight: Approx. 1 N to 5 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.
Measurement example:
Measuring method: see "Electrical performance:
Measuring method for inductance/Q" in the Appendix.
Measuring equipment: digital multimeter
Measuring equipment: Keysight 8753C or the
equivalent
Apply the rated current specified in chapter 3.
8. Mechanical Performance
No.
Item
8.1 Shear test
Specification
No significant mechanical damage or no
sign of electrode peeling off shall be
observed.
Test method
Test substrate: glass-epoxy substrate
Applying force: 5 N
Holding time: 5 s±1 s
Force application direction:
8.2 Bending test
No significant mechanical damage or no
sign of electrode peeling off shall be
observed.
Test substrate: glass-epoxy substrate (100 mm × 40
mm × 0.8 mm)
Pressurizing speed: 1 mm/s
Pressure jig: R340
Deflection: 2 mm
Holding time: 30 s
MURATA MFG CO., LTD
Spec No.: JELF243B_0010T-01
No.
Item
8.3 Vibration
8.4 Solderability
8.5 Resistance to
soldering heat
P6/13
Specification
Appearance shall have no significant
mechanical damage.
Inductance change rate: within ±10%
Test method
Oscillation frequency: 10 Hz to 55 Hz to 10 Hz, for
approx. 1 min
Total amplitude: 1.5 mm
Test time: 3 directions perpendicular to each other, 2 h
for each direction (6 h in total)
90% or more of the outer electrode shall be Flux: immersed in ethanol solution with a rosin content
covered with new solder seamlessly.
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
Appearance: No significant mechanical
Flux: immersed in ethanol solution with a rosin content
damage shall be observed.
of 25(wt)% for 5 s to 10 s
Inductance change rate: within ±10%
Solder: Sn-3.0Ag-0.5Cu solder
Pre-heating: 150°C±10°C/1 min to 2 min
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 glass-epoxy substrate for test.
No.
Item
Specification
9.1 Humidity
Appearance: No significant mechanical
damage shall be observed.
Inductance change rate: within ±10%
9.2
Heat life
Appearance: No significant mechanical
damage shall be observed.
Inductance change rate: within ±10%
9.3
Humidity load
Appearance: No significant mechanical
damage shall be observed.
Inductance change rate: within ±10%
9.4
Temperature cycle
Appearance: No significant mechanical
damage shall be observed.
Inductance change rate: within ±10%
Test method
Temperature: 40°C±2°C
Humidity: 90% (RH) to 95% (RH)
Test time: 1000 h (+48 h, -0 h)
Post-treatment: left at a room condition for 24 h±2 h
Temperature: 125°C±2°C
Applied current: Rated current specified in chapter 3
Test time: 1000 h (+48 h, -0 h)
Post-treatment: left at a room condition for 24 h±2 h
Temperature: 40°C±2°C
Humidity: 90% (RH) to 95% (RH)
Applied current: Rated current specified in chapter 3
Test time: 1000 h (+48 h, -0 h)
Post-treatment: left at a room condition for 24 h±2 h
Single cycle conditions:
Step 1: -55°C (+0°C, -3°C)/30 min±3 min
Step 2: ordinary temperature/2 min to 3 min
Step 3: +125°C (+3°C, -0°C)/30 min±3 min
Step 4: ordinary temperature/2 min to 3 min
Number of testing: 10 cycles
Post-treatment: left at a room condition for 24 h±2 h
MURATA MFG CO., LTD
Spec No.: JELF243B_0010T-01
P7/13
10. Specification of Packaging
10.1 Appearance and dimensions of tape (8 mm width/paper tape)
A
0.62±0.04
B
1.12±0.04
t
0.8 max.
(in mm)
10.2 Taping specifications
Packing quantity
(Standard quantity)
10000 pcs/reel
Packing method
The products are placed in cavities of a carrier tape and sealed by a cover tape (top tape and bottom
tape when the cavities of the carrier tape are punched type).
Feed hole position
The feed holes on the carrier tape are on the right side when the cover tape (top tape when the cavities
of the carrier tape are punched type) is pulled toward the user.
Joint
The carrier tape and cover tape (top tape when the cavities of the carrier tape are punched type) 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
Cover tape (or top tape)
5 N min.
Bottom tape (only when the cavities of the carrier tape are punched type)
5 N min.
10.4 Peeling off force of tape
Speed of peeling off
Peeling off force
300 mm/min
0.1 N to 0.6 N (The lower limit is for typical value.)
MURATA MFG CO., LTD
Spec No.: JELF243B_0010T-01
P8/13
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.)
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
□□
○○○○
(2) Date
First digit: year/last digit of year
(1)
(2)
(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
ROHSY
()
(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
Label
H
D
W
11.
Dimensions of outer box
(mm)
W
D
H
186
186
93
Standard reel quantity
in outer box (reel)
5
* Above outer box size is typical. It depends on a
quantity of an order.
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
(4) Power plant control
equipment
equipment
(5) Medical equipment
(6) Transportation equipment (vehicles, (7) Traffic signal
(8) Disaster/crime
trains, ships, etc.)
equipment
prevention
equipment
(9) Data-processing
(10) Applications of similar complexity and/or reliability
equipment
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.
MURATA MFG CO., LTD
Spec No.: JELF243B_0010T-01
P9/13
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:
a
0.4
b
1.2
c
0.5
(in mm)
12.2 Flux and solder used
Flux
• Use a rosin-based flux.
• 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.
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℃
245℃±3℃
230℃
220℃
Limit Profile
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
150°C to 180°C/90 s±30 s
Heating
Above 220°C/30 s to 60 s
Above 230°C/60 s max.
245°C±3°C
260°C/10 s
2 times
2 times
Peak temperature
Number of reflow cycles
MURATA MFG CO., LTD
Spec No.: JELF243B_0010T-01
P10/13
12.4 Reworking with soldering iron
The following requirements must be met to rework a soldered product using a soldering iron.
Item
Requirement
Pre-heating
150°C/approx. 1 min
Tip temperature of soldering iron
350°C max.
Power consumption of soldering iron
80 W max.
Tip diameter of soldering iron
Soldering time
ø3 mm max.
3 s (+1 s, -0 s)
Number of reworking operations
2 times max.
* 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 be exceeded the upper limits as shown below.
An increased solder volume increases mechanical stress on the product. Exceeding solder volume may cause the failure of
mechanical or electrical performance.
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
(1) Turn the mounting direction of the component parallel to the
board separation surface.
A > D*1
(2) Add slits in the board separation part.
A>B
(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.: JELF243B_0010T-01
P11/13
(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.
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
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
Requirement
Power
Time
20 W/L max.
5 min max.
Frequency
28 kHz to 40 kHz
(3) Cleaner
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 6 months after delivery.
If you do not use the product for more than 6 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 may cause the poor
solderability.
• 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.
• Do not keep products in bulk packaging. Bulk storage could result in collisions between the
products or between the products and other parts, resulting in chipping or wire breakage.
• Avoid storing the product by itself bare (i.e. exposed directly to air).
Transportation
Excessive vibration and impact reduces the reliability of the products. Exercise caution when
handling the products.
MURATA MFG CO., LTD
Spec No.: JELF243B_0010T-01
P12/13
12.10 Resin coating (including moisture-proof coating)
When the product is coated/molded with resin, its electrical characteristics may change.
A wire breakage issue may occur by mechanical stress caused by the resin, amount/cured shape of resin, or operating
condition etc.
Some resins contain impurities or hydrolyzable chlorine, which could result in corrosion of the conducting materials, 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 Mounting conditions
Check the mounting condition before using.
Using mounting conditions (nozzles, equipment conditions, etc.) that are not suitable for products may lead to pick up errors,
misalignment, or damage to the product.
12.12 Operating environment
Do not use this product under the following environmental conditions as it may cause deterioration of product quality.
(1) In the corrodible atmosphere such as acidic gases, alkaline gases, chlorine, sulfur gases, organic gases and etc.
(the sea breeze, Cl2, H2S, NH3, SO2, NO2, etc)
(2) In the atmosphere where liquid such as organic solvent, may splash on the products.
(3) In the atmosphere where the temperature/humidity changes rapidly and it is easy to dew.
12.13 Mounting density
If this product is placed near heat-generating products, be sure to implement sufficient heat-dissipating measures.
If this product is subjected to a significant amount of heat from other products, this could adversely affect product quality,
resulting in a circuit malfunction or failure of the mounted section. Also, be sure that the product is used in a manner so that
the heat that the product is subjected to from other products does not exceed the upper limit of the rated operating
temperature for 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.: JELF243B_0010T-01
P13/13
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.
Zm=
V1
I1
Zx=
V2
I2
(3) Thus, the relationship between the product's impedance value (Zx) and measured impedance value (Zm) is as follows.
Zx=α
Zm-β
1-ZmΓ
Here,
α = D/A = 1
β = B/D = Zsm - (1 - Yom Zsm) Zss
Γ = C/A = Yom
Zsm: measured impedance of short chip
Zss: residual impedance of short chip (0 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
Lx=
2πf
Qx: Q of chip coil
Im(Zx)
Qx=
f: measuring frequency
Re(Zx)
MURATA MFG CO., LTD