Specifications

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6、Standard test conditions：
Voltage
DC：5V
7、Electrical performance test：
During the temporary simple test in the sample stage, the J1 terminal is externally connected
with DC5V power supply (note that the polarity of the power supply cannot be reversed), and the J2
and J3 terminals are externally connected with two speakers. After power on, the music is played
through the mobile phone paired with Bluetooth. The sound quality is good when the music is played,
there is no noise, and the volume of the left and right speakers is balanced, which is qualified.
8、PCB technological requirements：
PCB technological requirements
Item
Specification
description
Unit
Notes
Plate thickness
1.6
mm
Plate size
58*40
mm
Copper thickness
32
um
Solder resist color
Black oil
Technology
lead free tin
spraying process
Silk screen color
white
PCB material
Double sided epoxy
FR-4
Flame Rating
94V-0
PCB edition
V1.0
PCB supplier
Yiyang、Yongsheng
9、PCBA Requirement：
The PCBA adopts double-sided epoxy plate FR-4 and lead-free tin spraying process.
a、PCBA appearance dimension meets the requirements;
b、Backing welding of all components;
c、All materials meet ROHS requirements;
In order to prevent electron migration, please keep the appearance of the main body in good
condition, and the solder joints are smooth and full without false soldering, tin and tin dross.
The wire surface is free of damage, and the color and connector specification meet the requirements.