Neoway N720 - 8 SMT Temperature Curve

N720 Hardware User Guide
Copyright © Neoway Technology Co., Ltd 48
8 SMT Temperature Curve
Figure 8-1 Temperature curve
X: Time (s) Y: Temperature (°C )
Technical parameters:

Ramp up rate: 1 to 4 °C /sec

Ramp down rate: -3 to -1 °C /sec

Soaking zone: 150-180 °C , Time: 60-100 s

Reflow zone: >220 °C , Time: 40-90 s

Peak temperature: 235-250 °C
Do not use the kind of solder paste different from our module technique.

The melting temperature of solder paste with lead is 35 °C lower than that of solder paste without lead.
It is easy to cause faulty joints for BGA inside the module after second reflow soldering.

When using only solder pastes with lead, please ensure that the reflow temperature is kept at 220 °C
for more than 45 seconds and the peak temperature reaches 240 °C .
Neoway will not provide warranty for heat-responsive element abnormalities caused by improper
temperature control.