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CLM920_NC3_LTE Module hardware manual
Shanghai Yuge Information Technology co., LTD
- 74 -
The recommended furnace temperature curve is shown below
:
Figure 7-1 Reflow soldering temperature graph
Table 7-1 Reflow process parameter table
Warm zone
Time
key parameter
Preheating zone
(
40
℃~
165
℃)
Heating rate
:
1
℃
/s
~
3
℃
/s
Constant temperature zone
(
160
℃~
210
℃)
(
t1
~
t2
):
70s
~
120s
Recirculation zone
(
>
217
℃)
(
t3
~
t4
):
40s
~
60s
Peak temperature
:
235
℃~
245
℃
Cooling zone
Cooling rate
:
2
℃
/s
≤
Slope
≤
5
℃
/s