The differences between a pointed soldering iron and a soldering iron in the shape of a pen
1. Pen-shaped soldering iron
This kind of electric soldering iron is generally pointed, and there are two types: adjustable temperature and non-adjustable temperature.
Its characteristics are: cheap price, suitable for soldering plug-in components, non-adjustable pen-shaped electric soldering iron, oxidized with long-term high temperature, and the tip of the tip is no longer tinned.
For the type of LQFP package and TSSOP package, the pointed soldering iron is generally not easy to use, and it cannot be replaced with a knife-edge soldering iron tip, which has great limitations.
It's just the soldering of plug-in components. When performing some simple soldering needs, you can use a harmful electric soldering iron.
2. Pointed soldering iron
Soldering stations are generally temperature-adjustable, and some are equipped with heat guns. The original one is pointed, but due to structural compatibility, it can be replaced with a knife-edged tip.
When using a pointed soldering iron, the temperature can be adjusted to about 350 for the soldering of general electronic components. When there is a fan heat design on the PCBA, the temperature can be increased appropriately to ensure that the temperature can melt the tin on the PCBA.
Because the knife edge of the soldering iron tip can be effectively bonded to the pins of the SOP/TSSOP/LQFP package, it will be easier to handle during desoldering.
Selection experience of electric soldering iron, selection skills of solder and flux
1. Selection of electric soldering iron
The power of the soldering iron is determined by the size of the soldering point. The area of the soldering point is large, and the heat dissipation speed of the soldering point is also fast. The power of the soldering iron should be larger.
Generally, the power of the electric soldering iron is 20W, 25W, 30W, 35W, 50W, etc., and the power of about 30W is generally selected.
Soldering iron tin:
The newly bought electric soldering iron must be tinned before it can be used.
After using the soldering iron for a long time, a layer of oxide will be formed on the tip of the soldering iron, and it will not be easy to eat tin. You can use a file to file off the oxide layer. After the soldering iron is powered on, insert rosin when the tip of the soldering iron is slightly hot, and apply solder You can continue to use it.
2. Solder and flux
When choosing solder and flux, generally choose solder wire with low melting point, choose non-corrosive flux, such as rosin, do not use industrial solder and corrosive acidic solder oil, generally use solder wire containing rosin.
