Chengdu Ebyte Electronic Technology Co.,Ltd.
E103-W11 UserManual
Copyright ©2012–2022, Chengdu Ebyte Electronic Technology Co., Ltd
24
10Welding Operation Guidance
10.1 Reflow temperature
Profile Feature
Sn-Pb Assembly
Pb-Free Assembly
Preheat/
heat
preservation
Min preheating temp. (
Tsmin
)
100℃
150℃
Max preheating temp. (T
smax
)
150℃
200℃
Preheating time
(T
smin
~T
smin
)
60-120 sec
60-120 sec
Average ramp-up rate (T
L
~T
p
)
3℃/second max
3℃/second max
Liquidous Temperature (T
L
)
183℃
217℃
Time Maintained Above T
L
60~90 sec
60~90 sec
Peak temperature T
p
Do not exceed the temperature
stated on the "damp sensitivity"
label.
Do not exceed the temperature
stated on the "damp sensitivity"
label.
See the figure below for time (Tp) within
5°C of the specified grading temperature
(Tc)
20 sec
30
秒
sec
Average ramp-down rate (T
p
~T
L
)
6℃/second max
6℃/second max
Time 25℃ to peak temperature
6 minutes
max
8 minutes
max
※The peak temperature (Tp) tolerance definition of the temperature profile is the upper limit
10.2 Reflow profile
