What Is Thermoset Material
A short definition of thermoset polymers and why the cross linked structure gives strength but also brittleness.
Thermoset refers to the set of materials formed by polymers joined by chemical bonds, acquiring a highly cross linked final structure.
The highly cross linked structure of thermoset materials is directly responsible for the high mechanical and physical resistance of these materials, whether that resistance is to stress, to load or to temperature, when compared with thermoplastics and elastomers. On the other hand, it is that same highly cross linked structure that gives low elasticity, which is where the characteristic brittleness of these materials comes from.
For what this means when you are choosing a bobbin or a toroid mount, see the plastic choice article and the material guide.
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Questions On This Topic
Why does brittleness matter on a bobbin
Because handling during assembly and pin insertion loads the moulded body. Brittle does not mean fragile in service, but it does mean the design has to respect it.
Are thermosets always more expensive
The moulded part usually costs more. The finished component can still cost less once soldering steps are counted.
Turn This Into A Part Number
Send the constraint you are working against and you will get a part number or a tooling answer back.