Module Is Easy To Damage; High Bit Error Rate; Welding Operation Guidance; Reflow Soldering Temperature - Ebyte E73-2G4M04S1A User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.

5.2 Module is easy to damage

Please check the power supply and ensure it is within the recommended range. Voltage higher than the peak will

lead to a permanent damage to the module.
Please check the stability of power supply and ensure the voltage not to fluctuate too much.

Please make sure anti-static measures are taken when installing and using, high frequency devices have electrostatic

susceptibility.
Please ensure the humidity is within limited range for some parts are sensitive to humidity.

Please avoid using modules under too high or too low temperature.


5.3 High bit error rate

There are co-channel signal interference nearby, keep away from interference sources or modify frequency, channel

to avoid interference.
The clock waveform on the SPI is not standard. Check whether there is interference on the SPI line. The SPI bus

line should not be too long.
Unsatisfactory power supply may also cause garbled characters, and ensure the reliability of the power supply.

If the extension cable or feeder is of poor quality or too long, the bit error rate will be high.


6. Welding operation guidance

6.1 Reflow Soldering Temperature

Profile Feature
Solder Paste
Preheat Temperature min （Tsmin） Minimum preheating temperature
Preheat temperature max (Tsmax)
Preheat Time (Tsmin to Tsmax)(ts)
Average ramp-up rate(Tsmax to Tp)
Liquidous Temperature (TL)
Time（tL）Maintained Above（TL） Time above liquidus
Peak temperature（Tp）
Aveage ramp-down rate（Tp to
Tsmax）
Time 25℃ to peak temperature
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Curve feature
Solder paste
Maximum preheating temperature
Preheating time
Average rising rate
Liquid phase temperature
Peak temperature
Average descent rate
Time of 25 ° C to peak temperature
E73-2G4M04S1AX User manual
Sn-Pb Assembly Pb-Free Assembly
Sn63/Pb37
100℃
150℃
60-120 sec
3℃/second max
183℃
60-90 sec
220-235℃
6℃/second max
6 minutes max
Sn96.5/Ag3/Cu0.5
150℃
200℃
60-120 sec
3℃/second max
217℃
30-90 sec
230-250℃
6℃/second max
8 minutes max
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