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Eva Zhong
Email:pcba22@pcb-smt.net
Tel: 4009309399
Fax:+8675526978080
Mobile:+8618138218088
skype:live:b89824d645dd361c
Factory address: 3/F. 1/B, 18-2 Yuquan East Rd. Yulv Village. Guangming New district. Shenzhen. China.
Soldering Circuit Boards Pcb
Soldering Circuit Boards Pcb is often the most common form of soldering. The basics are easy to understand, but you still need to master certain skills through practice. The best way to do this is to buy a simple electronic component or assemble a simple circuit on a multiwell plate.
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Specification:
| Aticle | Description | Capability |
| Material | Laminate material | FR4, Alu, CEM3,Taconic,Rogers |
| Board cutting | Number of layers | 1-58 |
Min.Thickness for inner layers (Cu thickness are excluded) | 0.003"（0.07mm） | |
| Board thickness | Standard | 0.04-0.16''±10%（0.1-4mm±10%） |
| Min | Single/Double layer:0.008±0.004'' | |
| Bow and twist | <7/1000 | |
| Copper weight | outer Cu weight | 0.5-4 oz |
| inner Cu weight | 0.5-3 oz | |
| Drilling | Min size | 0.0078''（0.2mm） |
| Drill deviation | ±0.002''(0.05mm) | |
| PTH hole tolerance | ±0.002''(0.005mm) | |
| NPTH Hole tolerance | ±0.002''(0.005mm) | |
| Plating | Min hole size | 0.0008''（0.02mm） |
| Aspect ratio | 20(5 :1) | |
| Solder mask | Color | Green,white,black,red,yellow,blue |
| Min solder mask clearance | 0.003''(0.07mm) | |
| Thickness | 0.0005-0.0007''(0.012-0.017mm) | |
| Silkscreen | Color | Green,white,black,red,blue.... |
| Min size | 0.006''(0.15mm) | |
| E-test | Flying probe tester | Y |
| Controlled Impedance | Tolerance | ±10% |
| Impedance tester | Tektronix TDS8200 | |
| Surface finish | HASL,ENIG,immersion silver，immersion tin, OSP.... | |
Description:
Soldering is the process of joining two copper or metal parts by melting the solder and bonding them together for a good and permanent electrical connection.
Soldering Circuit Boards Pcb is often the most common form of soldering. The basics are easy to understand, but you still need to master certain skills through practice. The best way to do this is to buy a simple electronic component or assemble a simple circuit on a multiwell plate.
The first step is to clean the surface to ensure a low resistance solder joint. Clean the surface with a hard deposit plate using a cleaning pad or fine grade steel wool. Be aware of boards with tight tolerances because fine wire shavings may get caught between the pads and the holes.
Once the board is cleaned, you can add components to the board. Unless you have a simple circuit and only a few components need to be soldered, you will not place all components on the board and solder them immediately. You are more likely to solder several components at a time before flipping the board and placing more boards.
It is usually best to start with the smallest and flattest components (resistors, ICs, signal diodes, etc.), which makes them more stable during the soldering process. It is also a good idea to save the sensitive components to the end, so there is no greater chance of damaging them when assembling the remaining circuits.
Bend the leads as needed and insert the components into the appropriate holes on the board. You may want to bend the leads on the bottom of the board at a 45-degree angle to hold the part in place during soldering. This makes the width relatively flat, which makes it more stable during assembly of the rest of the circuit.
