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CLM920 TD3 LTE Module Hardware Usage Guide
The recommended furnace temperature curve is shown below：
Warm zone
Preheating zone (40℃ ~
165℃ )
Temperature zone
(160℃ ～210℃ )
Recirculation zone
(>217℃ )
Cooling zone
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Figure 7-1 Reflow soldering temperature graph
Table 7-1 Reflow process parameter table
Time
(t1～t2)：70s～120s
(t3～t4)：40s～60s
Cooling rate: 2℃ / s ≤ Slope ≤ 5℃ / s
Key parameter
Heating rate: 1℃ / s ~ 3℃ / s
Peak temperature: 235℃ ~ 245℃
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