CC3-4805SR-E Datasheet, PDF (25/25 Pages) TDK Electronics – Insulation type DC-DC converter

CC-E
25
2-5. Common mode noise
For products other than with 10W, capacitors are not con-
nected between the primary GND and the secondary GND.
To reduce common mode noise, connect a capacitor with
around 1000pF between the primary GND and the second-
ary GND, as shown in the figure below.
In this case, note that if the capacitor that is connected is
too large, coupling capacitance between input and output
becomes large.
Also be careful about the withstand voltage of the capacitor
(500V or over is desirable with consideration of the insula-
tion withstand voltage).
+Vin
+Vout
2-6. Radiation noise
Radiation noise of the converter can be reduced by con-
necting the case terminal to the input or output GND ter-
minal. The effectiveness varies depending on the device.
Check it on the actual device.
Regarding wiring, use GND line and solid pattern for the
bottom of the converter as much as possible.
- SMD models are not equipped with case terminals.
–Vin
–Vout
For products with 10W, capacitors with 1000pF are inter-
nally connected between primary and secondary.
3. Soldering conditions/Cleaning conditions
3-1. Soldering conditions
˔4PMEFSJOH
DPOEJUJPOT
ɹ%*1
NPEFMT

4*1
NPEFMT
0CTFSWF
UIF
GPMMPXJOH
DPOEJUJPOT
JO
TPMEFSJOH
CPBSE
4PMEFS
EJQ

4PMEFSJOH
DPQQFS
260°C, 10s max.
380°C, 3s max.
4.%
NPEFMT
-FBEGSFF
TPMEFSJOH

)JHIUFNQFSBUVSF
SFqPX
QSPDFTT
4VSGBDF
UFNQFSBUVSF
PG
QBSUT
245˚C max.
225˚C min.
180˚C
150˚C
30p20s
1 to 3˚C/s 40 to 100s 1 to 4˚C/s 1 to 5˚C/s
・All specifications are subject to change without notice.
3-2. Cleaning method
Board cleaning after soldering is not recommended. How-
ever, the cleaning fluids and conditions shown in the table
below have been tested and proved to have no problem.
These fluids and conditions can be used. Consult us for
using cleaning fluids other than those shown below.
Cleaning fluids and test conditions
Cleanthrough 750H
(1) Cleaning (shaking) at 60°C for 4 minutes
(2) Rinsing (shaking in water) at 60°C for 4 minutes
(3) Rinsing (shaking in water) at ordinary temperature -
40°C for 4 minutes
(4) Drying at 70°C for 6 minutes
Pine alpha ST100S
(1) Cleaning (shaking) at 60°C for 5 minutes
(2) Rinsing (shaking in water) at 30°C for 3 minutes
(3) Drying at 70°C for 6 minutes
Terpene Cleaner EC-7R
(1) Cleaning (shaking) at 60°C for 5 minutes
(2) Rinsing (shaking in IPA) at 30°C for 10 minutes
(3) Drying at 70°C for 6 minutes
Isopropyl alcohol
(1) Ultrasonic waves at 60°C for 1 minute
(2) Cool bath cleaning R.T. for 1 minute
(3) Vapor cleaning at 83°C for 1 minutes
Asahiklin AK-225AES
(1) Ultrasonic waves at 50°C for 2 minutes
(2) Cool bath cleaning R.T. for 2 minutes