User manual

Chip Resistor
- 22 -
■
NOTICE
●
Usage of the resistor
▶
Flow Soldering
After sticking the resistor to PCB with paste, dip the PCB into solder bath. <Fig 15>
▶
Reflow Soldering
After printing solder creams on PCB, place the resistor on the solder cream.
Then heat the PCB. <Fig 16>
●
Caution
▶
Storage condition
Please make sure that keep the storage conditions.
* Temperature : 5
℃∼
35
℃
,*Humidity:45%RH
∼
85%RH
▶
Damage control
Please handle with care, to prevent damaging the resistor.
Specially, the excessive nozzles' height of SMD or the extreme touch with tweezers.
▶
Leaching prevention
It is important to keep the soldering conditions for prevent Ag leaching in Flow soldering.
<Fig 15>
Temp.
Soldering Cooling
235
±
5
℃
within 5 sec
<Fig 16>
Temp.
Pre-heating
Soldering
Cooling
within 120 sec
230
±
5
℃
160
℃
within 20 sec
200
℃
130
℃
Pre-heating
Δ
T
≤
150
℃
Peak temp.
within 10 sec
Time
Time