What are heat sensitive components?
These components include SMT aluminum capacitors, tantalum ceramic capacitors, crystals, oscillators, fuses and other components which have temperature limitations on the package body that restrict the peak reflow temperature and the time duration above 217 o C.
Can soldering heat damage components?
You might not notice anything immediately wrong, but running a component up to molten solder temperatures is likely to short the device’s life span. It only takes a couple of seconds to get serious amounts of heat into a part.
How much heat can a PCB take soldering?
600°- 650°F (316°- 343°C) is a good place to start for lead-based solder and 650°- 700°F (343°- 371°C) for lead-free solder. You want the tip hot enough to melt the solder efficiency, but excess heat can damage components as the heat travels along the leads, and it will reduce the lifespan of the soldering tip.
What happens if a soldering iron is too hot?
Your iron is too cool if you don’t get a free flow of solder leading to a shiny surface and a good meniscus shape, or if you create icicles Your iron is too hot if the solder melts too fast, and in using SMD parts, if the solder at both ends of the part melts when you apply the iron at one end.
What do you need to know about soldering components?
Some components require special care when soldering. Many must be placed the correct way round and a few can be easily damaged by the heat from soldering. The table shows advice for the various components and a suggested order to put them on the board.
What happens if you put too much heat on a soldering iron?
Applying high heat levels to the board or its components for an extended period of time can damage your board, components, create brittle solder joints, and lead to service issues down the round. Keep your soldering iron set at a reasonable temperature.
What to do if you burn yourself while soldering?
If you burn yourself see First Aid for Burns below. Some components, such as transistors, can be damaged by heat when soldering so if you are not an expert it is wise to use a heat sink clipped to the lead between the joint and the component body.
Do you need a heat sink when soldering transistors?
Some components, such as transistors, can be damaged by heat when soldering so if you are not an expert it is wise to use a heat sink clipped to the lead between the joint and the component body. You can buy a special tool, but a standard crocodile clip (without a plastic cover) works just as well and is cheaper.