SpecNo. JELF243A – 9130-01 P7/8
MURATA MFG.CO., LTD
Reference
Only
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 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]
Products shall be located in the sideways
direction (Length:a
b) to the mechanical
stress.
(2) Products location on P.C.B. separation
Products (A,B,C,D) shall be located carefully
so that products are not subject to the
mechanical stress due to warping the board.
Because they may be subjected the mechanical
stress in order of A
CB D.
11.6 Cleaning Conditions
Products shall be cleaned on the following conditions.
(1) Cleaning temperature shall be limited to 60°C max.(40°C max for IPA.)
(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 minutes 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.
11.7 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.
11.8 Temperature rating of the circuit board and components
located around
Temperature may rise up to max. 40 ℃ when applying the rated current to the Products.
Be careful of the temperature rating of the circuit board and components located around.
〈
Poor example
〉
〈
Good example
〉
b
a
Seam
Slit
A
D
B
C
b
a
Length:a
b