Process information for pcb board:
Production process: lead-free process
Production process: SMT / DIP / packaging
Solder paste requirements: Ag3.0/Cu0.5/20-38uM
Inspection requirements: 1: The first piece detects the thickness of the solder paste;
2: Test the furnace temperature before reflow soldering, and archive;
3: BGA GFN requires 100% X-ray detection;
4: The tin height on the side of the QFN package component is 250%;
5: 100% AO1 is checked after SMT.
Material Pre-forming: 1: J2, J11 pins are machined with 2*40P double row pins and 40Pin curved needles.
2 : EC3, EC101 plug-in must be processed into a horizontal type, and the plug-in needs to be glued.
DIP welding method: fixture wave soldering,
A face fixture
1 : The A-faced fixture is over-fired, and the curved pin of the 6Pin pin on the J11 is facing U57.
B-side hand soldering
1: The temperature of the soldering iron is controlled between 330 °C and 350 °C.
2. Buzzer welding temperature is 330 °CC, welding time is between 3 seconds - 5 seconds
Product introduction of nursing aid circuit board:
1. This care aid is a rigid 8-layer gold plated circuit board. It is a PCB hard board, ceramic capacitor, SMD resistor, chip tantalum capacitor, resistor, thermistor, diode, Schottky diode, rectifier diode, discharge tube, LED, inductor, magnetic beads and other components Made of highly rigid printed circuit boards. It has the characteristics of high wiring density, light weight and thin thickness. It is mainly used for care aids. Its substrate is FR4. This basic material allows the board to be adapted to non-deformable boards that cannot be rotated or moved during use without damaging the circuitry on the printed circuit board.
2. The care aid pcb is suitable for medical health. After 100% electrical testing and visual inspection. In addition, the care aid pcb has passed ISO, UL certification and is ROHS REACH compliant. Therefore, our products are of reliable quality. We accept OEM orders for SMT assembly projects. The FR-4 is laminated to a flexible circuit to form a rigid flexible board, usually with through holes. Its solder mask is a cured solder mask and a liquid imageable solder mask.