Chengdu Ebyte Electronic Technology Co., Ltd
E104-BT11 User Manual
Copyright ©2012–2020
，
Chengdu Ebyte Electronic Technology Co.,Ltd
27
7.3 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.
8 Welding instruction
8.1 Reflow soldering temperature
Profile Feature
Curve characteristics
Sn-Pb Assembly
Pb-Free Assembly
Solder Paste
Solder paste
Sn63/Pb37
Sn96.5/Ag3/Cu0.5
Preheat Temperature min
（
Tsmin
）
Min preheating temp.
100
℃
150
℃
Preheat temperature max (Tsmax)
Max preheating temp.
150
℃
200
℃
Preheat Time (Tsmin to Tsmax)(ts)
Preheating time
60-120 sec
60-120 sec
Average ramp-up rate(Tsmax to Tp)
Average ramp-up rate
3
℃
/second max
3
℃
/second max
Liquidous Temperature (TL)
Liquid phase temp.
183
℃
217
℃
Time
（
tL
）
Maintained Above
（
TL
）
Time below liquid phase
line
60-90 sec
30-90 sec
Peak temperature
（
Tp
）
Peak temp
220-235
℃
230-250
℃
Aveage ramp-down rate
（
Tp to Tsmax
）
Average ramp-down rate
6
℃
/second max
6
℃
/second max
Time 25
℃
to peak temperature
Time to peak temperature
for 25
℃
6 minutes max
8 minutes max
