In electronic componentsSMTDuring the welding process, applySolder pasteAnd chip soldering are two different steps. Then, in the case of electronic componentsSMTDuring the soldering process, should solder paste be applied first or should the chip be placed for soldering first? Now, let's have JJY solder Paste Manufacturer explain it:

Electronic componentsSMTWelding is usually carried out in the following steps:

1Print solder paste

First, apply solder paste to the printed circuit board, which is usually achieved by using a printing press and a template.

Solder paste is a solder mixture containing fine alloy particles. It contains solder with good fluidity and flux. Solder paste is applied and printed onpcbOn the pad positions, these positions correspond to the positions of the chip pins.

2Install components

After printing and applying solder paste, electronic components (such as chips) are precisely placed inPCBApply it so that its pins correspond to the applied solder paste. This step is usually accomplished by automated equipment (surface mount technology (SMT) machines.

3Reflow soldering

PCBAfter the components on it were installed, the entirePCBIt is sent into the reflow oven for soldering. The temperature of the reflow oven gradually rises, causing the applied solder paste to melt. Then it cools and solidifies. During this process, the solder and the chip pins andPCBThe solder pads form a welding connection.

In the soldering process of electronic components, should solder paste be applied first or should the chips be placed for soldering first? In short, applying solder paste first and then placing the chip is a common operation sequence, which ensures that the solder paste can be accurately applied to the correct position during the re-soldering process, thereby guaranteeing that the components andPCBReliable connection.

Shenzhen JJY Industrial Technology Co., Ltd. mainly engages in the production and operation of:SMTSolder paste manufacturers of solder paste, syringe solder paste, lead-free solder wire, wave soldering bar, automatic soldering wire, etc.