Module Is Easy To Damage; Ber(Bit Error Rate) Is High; Production Guidance; Reflow Soldering Temperature - Ebyte E28-2G4M12 Series User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.
Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the

distance).
The power supply low voltage under room temperature is lower than 2.5V, the lower the voltage, the lower the

transmitting power.
Due to antenna quality or poor matching between antenna and module.


6.2 Module is easy to damage

Please check the power supply source, ensure it is within right voltage range.

Please check the stability of power source, the voltage cannot fluctuate too much.

Please make sure antistatic measure are taken when installing and using, high frequency devices have electrostatic

susceptibility.
Please ensure the humidity is within limited range, some parts are sensitive to humidity.

Please avoid using modules under too high or too low temperature.


6.3 BER(Bit Error Rate) is high

There are co-channel signal interference nearby, please be away from interference sources or modify frequency and

channel to avoid interference;
Poor power supply may cause messy code. Make sure that the power supply is reliable.

The extension line and feeder quality are poor or too long, so the bit error rate is high;


7.Production guidance

7.1 Reflow soldering temperature

Solder Paste
Preheat Temperature min （Tsmin）
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）
Peak temperature（Tp）
Aveage ramp-down rate（Tp to
Tsmax）
Time 25℃ to peak temperature
Copyright ©2012–2024，Chengdu Ebyte Electronic Technology Co.,Ltd.
Profile Feature Sn-Pb Assembly
Sn63/Pb37
100℃
150℃
60-120 sec
3℃/second max
183℃
60-90 sec
220-235℃
6℃/second max
max 6 minutes
E28-2G4M12XX User Manual
Pb-Free Assembly
Sn96.5/Ag3/Cu0.5
150℃
200℃
60-120 sec
3℃/second max
217℃
30-90 sec
230-250℃
6℃/second max
max 8 minutes
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