lqw18anr12g00 Murata Manufacturing Co., Ltd, lqw18anr12g00 Datasheet - Page 57

• Manufacturer Part Number: lqw18anr12g00
• Description: Chip Coils
• Manufacturer: Murata Manufacturing Co., Ltd

11
!Note
!Note
(4) Reworking with Soldering Iron
3. Mounting Instructions
(1) Land Pattern Dimensions
(2) Magnetic Coupling
(3) PCB Warping
(4) Amount of Solder Paste
56
Notice (Soldering and Mounting)
Continued from the preceding page.
Preheating at 150 C for 1 minute is required. Do not
directly touch the ceramic element with the tip of the
soldering iron. The reworking soldering conditions are as
follows:
Soldering iron power output
Temperature of soldering iron tip : 280 C
Diameter of soldering iron end
Soldering time
Large lands reduce Q of the mounted chip. Also, large
protruding land areas (bordered by lines having
dimensions 'c' and 'd' shown below) cause floating and
electrode leaching.
Since some chip coils are constructed like an open
magnetic circuit, narrow spacing between coils may
cause magnetic coupling.
The LQG and LQM LQH3KS/66S series have a
magnetically shielded structure. The structure makes
their coupling coefficient smaller than that of
conventional chip coils.
PCB should be designed so that products are not
subjected to the mechanical stress caused by warping
the board.
Products should be located in the sideways direction
(Length:a<b) to the mechanical stress.
Excessive solder causes electrode corrosion, while
insufficient solder causes low electrode bonding strength.
Adjust the amount of solder paste so that solder is
applied as shown on the right.
o Standard thickness of solder paste
LQP/LQG/LQM/LQW_A : 100 to 150 m
LQH/LQW_H : 200 to 300 m
• Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc.
This catalog has only typical specifications. Therefore, you are requested to approve our product specifications or to transact the approval sheet for product specificaions before ordering.
: 30W max.
: within 3 s
: 3.0mm max.
Poor example
LQH_C/D/H/M/N
LQW_H
LQP/LQG/LQM
Land
d
Continued on the following page.
Magnetic Coupling
Solder Resist
Good example
c
b
LQW_A
LQH_S
a
O05E9.pdf 03.3.7