What shape is a good solder joint?
concave fillet
The ideal solder joint for through-hole components is a “concave fillet”, which has a smooth and shiny concave surface at an angle of 40 to 70 degrees from the horizontal, which looks just like the shape of a Hershey’s kiss.
What is the necessity of soldering joints?
Soldering process is used in the electronics industry to bond components together, forming one or more electrical connections. Soldering serves two functions: mechanical support—holding components of an assembly together, and electrical support—forming required electrical connections within a circuit.
What solder joints are bad?
A solder-starved joint is just that: a joint that does not have enough solder. Despite making the necessary electrical contact, the insufficient solder weakens the joint and increases susceptibility to cracking and failure.
Why are solder joints so important in electronics?
Ensuring the solder joints are made correctly is of prime importance in any electronics construction. Solder joints that are poor will either cause the equipment to not to work once it has been completed, or there is the possibility that the solder joint could fail intermittently or introduce noise into the electronics circuit.
What happens if solder joints don’t work?
Solder joints that are poor will either cause the equipment to not to work once it has been completed, or there is the possibility that the solder joint could fail intermittently or introduce noise into the electronics circuit.
What is the role of interfacial tension in solder joints?
Reducing the solder–flux interfacial tension (γ LF) is also an important role of the flux. The value of γ SL is predetermined by the substrate (or coating) and the solder compositions. Solder joints may require wetting and spreading by molten solder within a confined geometry such as a cylindrical hole.
How to get a good solder joint on a pipe?
Pipe ends slide into various couplings. Many times they’ll bottom out on a ridge inside the coupling to make sure the pipe is seated at the proper depth. If that cut is angled, only a tiny part of the cut lines up, and that’s going to make getting a good solder joint difficult. 2. Clean and de-burr the pipe.