- 30 -
The upper is the reference temperature of the lead BGA
The temperature curve of Lead-free welding
41*41 the temperature setting of the BGA welding
38*38 the temperature setting of the BGA welding
preheating insulation heating welding1 welding2 cooling
upper
160
180
200
215
225
215
time
30
30
35
40
20
15
slope
4
.
0
3
.
0
3
.
0
3
.
0
3
.
0
3
.
0
IR
180
preheating insulation heating welding1 welding2 cooling
upper
165
190
225
245
255
240
time
30
30
35
55
25
15
slope
4
.
0
3
.
0
3
.
0
3
.
0
3
.
0
3
.
0
IR
210
preheating insulation heating welding1 welding2 cooling
upper
165
190
225
245
250
235
time
30
30
35
45
25
15
slope
4
.
0
3
.
0
3
.
0
3
.
0
3
.
0
3
.
0
IR
210
Содержание ZM-R380B
Страница 17: ... 16 Figure3 Figure4 ...
Страница 18: ... 17 Figure5 Figure6 ...
Страница 22: ... 21 maximum setting of the horizontal of the curve screen Figure8 Figure9 ...