Double sided Circuit Board Digital FM Receiver
Basic information about the product:
Product Name: L4Y-5052 (Overal PCB)
Board Usage: IoT Products
Pcb information: double sided FR4, plate thickness 1.0MM, copper thickness 2OZ, immersion gold, green oil white, single piece size 35.5*17.51MM
Order Quantity: 500pcs
Inspection method: AOI online testing components
Product process description:
Production process: lead-free process
Process flow: SMT+DIP
Material testing requirements: Test individual materials in advance, such as 呤器.
IC burning: the need for external programming of chips in advance
Special sensitive device processing: storage and transportation methods for temperature and humidity sensitive components.
1. The temperature of the soldering iron is controlled between 330 °C and 350 °C.
2: The connector cannot be welded, and the left and right are skewed and raised.
3: The tin point should be full and bright, and there should be no sharpening, less tin, bubble holes and too much tin.
4. U2 bit module needs to form welding pin header in advance, short foot is inserted in the module, pay attention to SD card seat facing up
The cleaning method of the circuit board: the washing water can not corrode the internal contacts of the connector. When forming the U2 module, the cleaning agent should not be immersed in the inside of the card seat to avoid necrosis and poor contact.