Reference Only
Spec No. JELF243A-0034S-01
P.1/9
CHIP COIL(CHIP INDUCTORS)LQH31HN□□□□03L REFERENCE SPECIFICATION
1.Scope
This reference specification applies to LQH31HN series, Chip coil (Chip Inductors).
2.Part Numbering
(ex)
LQ
H
31
H
N
54N
K
0
3
L
Product ID Structure Dimension Applications Category Inductance Tolerance Features Electrode Packaging
(L×W)
and
L:Taping
Characteristics
3.Rating
– 40 °C
– 40 °C
・Operating Temperature Range.
・Storage Temperature Range.
Customer
Part Number
to + 85 °C
to + 85 °C
Q
(min)
DC
Resistance
(Ω)
Self Resonant
Frequency
(MHz min)
Rated
Current
(mA)
50
0.035±30%
800
920
0.047±30%
650
790
145
0.061±30%
500
700
215
0.11±30%
430
520
290
0.17±30%
360
420
0.26±30%
300
330
0.44±30%
270
260
610
0.48±30%
240
250
750
0.79±30%
220
190
880
0.86±30%
200
180
Inductance
MURATA
Part Number
(nH)
LQH31HN54NK03L
54
LQH31HN95NK03L
95
LQH31HNR14J03L
LQH31HNR14K03L
LQH31HNR21J03L
LQH31HNR21K03L
LQH31HNR29J03L
LQH31HNR29K03L
LQH31HNR39J03L
LQH31HNR39K03L
LQH31HNR50J03L
LQH31HNR50K03L
LQH31HNR61J03L
LQH31HNR61K03L
LQH31HNR75J03L
LQH31HNR75K03L
LQH31HNR88J03L
LQH31HNR88K03L
390
500
Tolerance
K:±10%
60
J: ± 5 %
K:±10 %
4. Testing Conditions
《Unless otherwise specified》
Temperature : Ordinary Temperature / 15°C to 35°C
Humidity
: Ordinary Humidity / 25%(RH) to 85%(RH)
《In case of doubt》
Temperature
: 20 ± 2°C
Humidity
: 60%(RH) to 70%(RH)
Atmospheric Pressure : 86kPa to 106 kPa
5. Appearance and Dimensions
2.3±0.2
1.8±0.2
1.6±0.2
3.2±0.3
■Unit Mass (Typical value)
0.029g
1.6±0.2
* No Marking.
0.7 0.7
0.7
min min min
(in mm)
MURATA MFG.CO., LTD
Reference Only
Spec No. JELF243A-0034S-01
P.2/9
6. Electrical Performance
No.
6.1
Item
Inductance
Specification
Inductance shall meet item 3.
Test Method
Measuring Equipment :
KEYSIGHT E4991A or equivalent
Measuring Frequency : 1MHz
Measuring Method:See P.8
6.2
Q
Q shall meet item 3.
Measuring Equipment : KEYSIGHT E4991A or equivalent
Measuring Frequency : 100MHz
6.3
DC Resistance
DC Resistance shall meet item 3.
Measuring Equipment : Digital multi meter
6.4
Self Resonant
Frequency(S.R.F)
S.R.F shall meet item 3.
Measuring Equipment : KEYSIGHT E4991A or equivalent
6.5
Rated Current
Self temperature rise shall be
limited to 20 °C max.
Inductance Change : within ± 10 %
The rated Current is applied.
7. Mechanical Performance
No.
7.1
Item
Shear Test
Specification
Chip coil shall not be damaged after
tested as test method.
Test Method
Substrate : Glass-epoxy substrate
Chip Ciol
Pattern
Solder resist
Substrate
4.5
1.5
(in mm)
1
Applied Direction :
Chip Coil
F
Substrate
Force : 10 N
Hold Duration : 5s ± 1s
7.2
Bending Test
Substrate : Glass-epoxy substrate
(100mm×40mm×1.6mm)
Speed of Applying Force : 1mm / s
Deflection : 2mm
Hold Duration : 30 s
Pressure jig
R340
F
Deflection
45
7.3
Vibration
7.4
Solderability
45
Product (in mm)
Oscillation Frequency :10Hz ~ 55Hz ~ 10Hz
for 1 min
Total Amplitude : 1.5mm
Testing Time :
A period of 2 hours in each of 3 mutually
perpendicular directions.(Total 6 hours)
The wetting area of the electrode shall
be at least 90% covered with
new solder coating.
Flux: Ethanol solution of rosin,25(wt)%
(Immersed for 5s to 10s)
Solder : Sn-3.0Ag-0.5Cu
Pre-Heating : 150±10°C / 60 to 90seconds
Solder Temperature : 240±5°C
Immersion Time : 3±1 s
MURATA MFG.CO., LTD
Reference Only
Spec No. JELF243A-0034S-01
No.
7.5
Item
Resistance to
Soldering Heat
Specification
Appearance : No damage
Inductance Change : within ± 5 %
P.3/9
Test Method
Flux: Ethanol solution of rosin,25(wt)%
(Immersed for 5s to 10s)
Solder : Sn-3.0Ag-0.5Cu
Pre-Heating:150±10°C / 60 to 90seconds
Solder Temperature:270±5°C
Immersion Time:10±1 s
Then measured after exposure in the room
condition for 24±2 hours.
8.Environmental Performance (It shall be soldered on the substrate.)
No.
8.1
8.2
8.3
8.4
Item
Heat Resistance
Specification
Appearance : No damage
Inductance Change : within ± 5 %
Q Change : within ± 20 %
Test Method
Temperature : 85 °C ± 2 °C
Time : 1000 h (+48h , -0h)
Then measured after exposure in the room
for 24±2 hours.
Cold Resistance
Temperature : - 40 °C ± 2 °C
Time : 1000 h (+48h , -0h)
Then measured after exposure in the room
for 24±2 hours.
Humidity
Temperature : 40 °C ± 2 °C
Humidity : 90 %(RH) to 95 %(RH)
Time : 1000 h (+48h , -0h)
Then measured after exposure in the room
for 24±2 hours.
Temperature
Cycle
1 cycle :
1 step : - 40 °C ± 2 °C / 30 min ± 3 min
2 step : Ordinary temp. / 10 min to 15 min
3 step : + 85 °C ± 2 °C / 30 min ± 3 min
4 step : Ordinary temp. / 10 min to 15 min
Total of 10 cycles
Then measured after exposure in the room
for 24±2 hours.
9. Specification of Packaging
9.1 Appearance and Dimensions of plastic tape
+0.1
1.5 -0
※Lead-in / out wire
1.75±0.1
( 0.2 )
positions of the lead wire.
4.0±0.1
4.0±0.1
1.9±0.1
in taping are unified with the in/out
8.0±0.2
3.6±0.1
3.5±0.05
※The packing directions of the chip coil
2.0±0.05
Direction of feed
2.0±0.1
(in mm)
Dimension of the Cavity is measured at the bottom side.
9.2 Specification of Taping
(1) Packing quantity (standard quantity)
2,000 pcs / reel
(2) Packing Method
Products shall be packed in the each embossed cavity of plastic tape and sealed by cover tape.
(3) Sprocket hole
The sprocket holes are to the right as the tape is pulled toward the user.
(4) Spliced point
Plastic tape and Cover tape has no spliced point.
(5) Missing components number
Missing components number 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.
MURATA MFG.CO., LTD
condition
condition
condition
condition
Reference Only
Spec No. JELF243A-0034S-01
P.4/9
9.3 Pull Strength
Plastic tape
10N min.
Cover tape
9.4 Peeling off force of cover tape
Speed of Peeling off
Peeling off force
165 to 180 degree
300mm / min
0.2N to 0.7N
(minimum value is typical)
F
Cover tape
Plastic tape
9.5 Dimensions of Leader-tape, Trailer and Reel
There shall be leader-tape (cover tape) and trailer-tape (empty tape) as follows.
9.6 Marking for reel
Customer part number, MURATA part number, Inspection number(1), RoHS marking(2), Quantity etc ・・・
1)
(1) Factory Code
(2) Date
□□ OOOO
(1)
(2)
(3)
First digit
: Year / Last digit of year
Second digit
: Month / Jan. to Sep. 1 to 9, Oct. to Dec. O, N, D
Third, Fourth digit : Day
(3) Serial No.
2) « Expression of RoHS marking »
ROHS – Y (△)
(1) (2)
(1) RoHS regulation conformity
(2) MURATA classification number
9.7 Marking for Outside package (corrugated paper box)
Customer name, Purchasing order number, Customer part number, MURATA part number,
RoHS marking (2) ,Quantity, etc ・・・
9.8. Specification of Outer Case
Outer Case Dimensions (mm)
Label
H
D
W
10.
W
D
H
Standard Reel Quantity
in Outer Case (Reel)
186
186
93
5
Above Outer Case size is typical. It depends on a quantity
of an order
Caution
10.1 Limitation of Applications
Please contact us before using our products for the applications listed below which require especially high
reliability for the prevention of defects which might directly cause damage to the third party's life, body or property.
(6) Transportation equipment (vehicles, trains, ships, etc.)
(1) Aircraft equipment
(2) Aerospace equipment
(7) Traffic signal equipment
(3) Undersea equipment
(8) Disaster prevention / crime prevention equipment
(4) Power plant control equipment
(9) Data-processing equipment
(5) Medical equipment
(10) Applications of similar complexity and /or reliability
requirements to the applications listed in the above
MURATA MFG.CO., LTD
Reference Only
Spec No. JELF243A-0034S-01
P.5/9
10.2 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. Notice
This product is designed for solder mounting.
Please consult us in advance for applying other mounting method such as conductive adhesive.
11.1 Land pattern designing
Recommended land patterns for flow and reflow
It has been designed for Electric characteristics and
Please follow the recommended patterns. Otherwise,
includes electrical performance or solderability may
"position shift" in soldering process.
Chip Coil
c
a
1.0
b
4.5
c
1.5
soldering are as follows:
solderability.
their performance which
be affected, or result to
Land
Solder resist
(in mm)
a
11.2 Flux, Solder
Flux
Solder
b
・Use rosin-based flux.
・Don’t use highly acidic flux with halide content exceeding 0.2(wt)% (chlorine conversion value).
・Don’t use water-soluble flux.
・Use Sn-3.0Ag-0.5Cu solder
・Standard thickness of solder paste : 200μm to 300μm
Other flux (except above) Please contact us for details, then use.
11.3 Flow soldering / Reflow soldering conditions
・Pre-heating should be in such a way that the temperature difference between solder and product surface is
limited to 150°C max. Cooling into solvent after soldering also should be in such a way that the temperature
difference is limited to 100°C max.
Insufficient pre-heating may cause cracks on the product, resulting in the deterioration of products quality.
・Standard soldering profile and the limit soldering profile is as follows.
The excessive limit soldering conditions may cause leaching of the electrode and / or resulting in the
deterioration of product quality.
Soldering profile
(1)Flow soldering profile
Temp.
(℃)
265℃±3℃
250℃
Limit Profile
150
Heating Time
60s min.
Standard Profile
Time. (s)
Standard Profile
Pre-heating
Heating
Cycle of flow
Limit Profile
150°C、60s min.
250°C、4s~6s
265°C±3°C、5s
2 times
2 times
MURATA MFG.CO., LTD
Reference Only
Spec No. JELF243A-0034S-01
P.6/9
(2)Reflow soldering profile
Temp.
(℃)
260℃
245℃±3℃
230℃
220℃
Limit Profile
180
150
Standard Profile
30s~60s
60s max.
90s±30s
Time. (s)
Standard Profile
Pre-heating
Limit Profile
150~180°C 、90s±30s
Heating
above 220°C、30s~60s
above 230°C、60s max.
245±3°C
260°C,10s
2 times
2 times
Peak temperature
Cycle of reflow
11.4 Reworking with soldering iron.
The following conditions must be strictly followed when using a soldering iron.
Pre-heating
150°C,1 min
Tip temperature
350°C max.
Soldering iron output
80W max.
Tip diameter
φ3mm max.
Soldering time
3(+1,-0)s
Times
2 times
Note : Do not directly touch the products with the tip of the soldering iron in order to prevent the crack on
the products due to the thermal shock.
11.5 Solder Volume
・Solder shall be used not to be exceeded the upper limits as shown below.
・Accordingly increasing the solder volume, the mechanical stress to Chip is also increased.
Exceeding solder volume may cause the failure of mechanical or electrical performance.
Upper Limit
Recommendable
T
t
1/3T≦t≦T
T: Lower flange thickness
11.6 Product’s location
The following shall be considered when designing and laying out P.C.B.'s.
(1) P.C.B. shall be designed so that products are not subject to the mechanical stress due to warping the board.
[Products direction]
a
b
〈 Poor example〉
Products shall be located in the sideways
direction (Length:a
(2) Add slits in the board separation part.
A
(3) Keep the mounting position of the component away from
the board separation surface.
A > C
Seam
b
A
C
B
D
Slit
D 1
> B
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.
Length:a b
a
(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.
Screw Hole
Recommended
11.7 Cleaning Conditions
Products shall be cleaned on the following conditions.
(1) Cleaning temperature shall be limited to 60°C max.(40°C max for alcohol type cleaner.)
(2) Ultrasonic cleaning shall comply with the following conditions with avoiding the resonance phenomenon
at the mounted products and P.C.B.
Power : 20 W / l max.
Frequency : 28kHz to 40kHz
Time : 5 min max.
(3) Cleaner
1. Alternative cleaner
・Isopropyl alcohol (IPA)
2. Aqueous agent
・PINE ALPHA ST-100S
(4) There shall be no residual flux and residual cleaner after cleaning.
In the case of using aqueous agent, products shall be dried completely after rinse with de-ionized water in
order to remove the cleaner.
(5) Other cleaning
Please contact us.
11.8 Resin coating
The inductance value may change due to high cure-stress of resin to be used for coating/molding products.
An open circuit issue may occur by mechanical stress caused by the resin, amount/cured shape of resin,
or operating condition etc. Some resin contains some impurities or chloride possible to generate chlorine
by hydrolysis under some operating condition may cause corrosion of wire of coil, leading to open circuit.
So, please pay your careful attention when you select resin in case of coating/molding the products with the resin.
Prior to use the coating resin, please make sure no reliability issue is observed by evaluating products mounted
on your board.
11.9 Caution for use
・Sharp material such as a pair of tweezers or other material such as bristles of cleaning brush, shall not be touched to
the winding portion to prevent the breaking of wire.
・Mechanical shock should not be applied to the products mounted on the board to prevent the breaking of the core
MURATA MFG.CO., LTD
Spec No. JELF243A-0034S-01
Reference Only
P.8/9
11.10 Handling of a substrate
After mounting products on a substrate, do not apply any stress to the product caused by bending or twisting to
the substrate when cropping the substrate, inserting and removing a connector from the substrate or tightening
crew to the substrate.
Excessive mechanical stress may cause cracking in the product.
Bending
Twisting
11.11 Storage and Handing Requirements
(1) Storage period
Use the products within 12 months after delivered.
Solderability should be checked if this period is exceeded.
(2) Storage conditions
・Products should be stored in the warehouse on the following conditions.
Temperature : -10 °C to 40 °C
: 15 % to 85 % relative humidity No rapid change on temperature and humidity
Humidity
The electrode of the products is coated with solder. Don't keep products in corrosive gases
such as sulfur,chlorine gas or acid, or it may cause oxidization of electrode, resulting in
poor solderability.
・Products should not be stored on bulk packaging condition to prevent the chipping of the core and the
breaking of winding wire caused by the collision between the products.
・Products should be stored on the palette for the prevention of the influence from humidity, dust and so on.
・Products should be stored in the warehouse without heat shock, vibration, direct sunlight and so on.
(3) Handling Condition
Care should be taken when transporting or handling product to avoid excessive vibration or mechanical shock.
12.
Note
(1) Please make sure that your product has been evaluated in view of your specifications with our product being mounted
to your product.
(2) You are requested not to use our product deviating from the reference specifications.
(3) The contents of this reference specification are subject to change without advance notice. Please approve our
product specifications or transact the approval sheet for product specifications before ordering
MURATA MFG.CO., LTD
Reference Only
Spec No. JELF243A-0034S-01
(1) Residual elements and stray elements of test fixture can be described by F-parameter shown in following.
I2
I1
A
Zm
V1
Test Head
B
V2
D
C
Test fixture
Zx
V1
I1
=
A B
C D
V2
I2
Product
(2) The impedance of chip coil Zx and measured value Zm can be described by input/output current/voltage.
Zm=
V1
I1
,
Zx=
V2
I2
(3) Thus,the relation between Zx and Zm is following;
Zx= α
Zm-β
1-ZmΓ
where, α= D / A =1
β= B / D =Zsm-(1-Yom Zsm)Zss
Γ= C / A =Yom
Zsm : measured impedance of short chip
Zssa: residual impedance of short chip (0.771nH)
Yom: measured admittance when opening the fixture
(4) Lx shall be calculated with the following equation.
Im(Zx)
Im(Zx)
Lx : Inductance of chip coil
Lx=
, Qx =
2πf
Re(Zx)
Qx : Q of chip coil
f : Measuring frequency
MURATA MFG.CO., LTD
P.9/9