unicore UM982 - Production Requirement; Temperature Rising Stage Parameters; Preheating Stage Parameters; Reflux Stage Parameters

UC-00-M31 EN R1.2 Production Requirement 17
4 Production Requirement
Recommended soldering temperature curve is as follows:
°C
250
217
200
150
100
50
0
Rising
Cooling Reflux
Peak 245 °C
40~60s
60~120s
Preheating
Max. 4°C/s
Max. 3°C/s
Time (s)
Figure 4-1 Soldering Temperature (Lead-free)
Temperature Rising Stage
 Rising slope: Max. 3 °C/s
 Rising temperature range: 50 °C ~ 150 °C
Preheating Stage
 Preheating time: 60s ~ 120 s
 Preheating temperature range: 150 °C ~ 180 °C
Reflux Stage
 Over melting temperature (217 °C) time: 40s ~ 60 s
 Peak temperature for soldering: no higher than 245 °C
Cooling Stage
 Cooling slope: Max. 4 °C / s