2. The temperature curve of Lead-free welding
41*41 the temperature setting of the GBA welding:
preheating insulation heating Welding1 Welding2 Cooling
Upper
165
190
225
245
255
240
Time
30
30
35
55
25
15
Bottom 165
190
225
245
255
240
Time
30
30
35
55
25
15
Slope
3.0
3.0
3.0
3.0
3.0
3.0
IR
210
38*38 the temperature setting of the BGA welding:
preheating insulation heating Welding1 Welding2 Cooling
Upper
165
190
225
245
250
235
Time
30
30
35
45
25
15
Bottom 165
190
225
245
250
235
Time
30
30
35
45
25
15
Slope
3.0
3.0
3.0
3.0
3.0
3.0
IR
210
31*31 the temperature setting of the BGA welding:
preheating insulation heating Welding1 Welding2 Cooling
Upper
165
190
220
240
245
235
Time
30
30
35
40
20
15
Bottom 165
190
220
240
245
235
Time
30
30
35
40
20
15
Slope
3.0
3.0
3.0
3.0
3.0
3.0
IR
210
Above is the reference temperature of the lead-free BGA
Such as set 0 when the demolition of the cooling section of BGA.