Huawei ME909 Series - Page 70

HUAWEI ME909 Series LTE LGA Module
Hardware Guide
Mechanical Specifications
Issue V0.3 (2013-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
70
Figure 6-6 Reflow profile
Table 6-2 Reflow parameters
Temperature Zone
Time
Key Parameter
Preheat zone
(40°C–150°C)
60s–120s
Heating rate: 0.5°C/s–2°C/s
Soak zone
(150°C –200°C)
(t1–t2): 60s–120s
Heating rate: < 1.0°C/s
Reflow zone (> 217°C)
(t3–t4): 30s–90s
Peak reflow temperature:
230°C–250°C
Cooling zone
Cooling rate: 1°C/s ≤ Slope ≤ 4°C/s