Zamak Die Casting for Electronics
Zamak die casting for electronics and EMC shielding
Micrometal produces die-cast zamak components for the electronics industry. Zinc alloys offer excellent properties for electronic applications: good electrical conductivity for EMC shielding, high dimensional accuracy for connector housings, and surfaces suitable for various functional treatments. Components are cast in our zamak foundry in Erbusco (Brescia), Italy.
Electronic components in zamak
- EMC shielding housings
- Connector and terminal housings
- Heat sink supports
- PCB mounting brackets
- Enclosures and covers
- Precision mechanical components
EMC shielding
Zamak’s electrical conductivity makes it an excellent material for EMC (electromagnetic compatibility) shielding components. Die-cast zamak housings provide effective protection against electromagnetic interference, essential in sensitive electronic applications.
Micro die casting for electronics
Many electronic components require very small dimensions and tight tolerances. Our micro die casting specialisation allows us to produce components from 15g with high dimensional accuracy. Contact us for more information.
Discover our zamak inserts for overmolding
How we engineer an electronics component
Enclosures, connector shells, heat sinks and brackets: ZP3 allows thin walls, ribs and fine details in a single casting, with a precision that often avoids machining.
A zamak metal enclosure shields electromagnetic interference (EMI) better than a plastic one: in the design we look after the contact surfaces between parts and the continuity of the shell, which decide how well the assembly really shields.
For corrosion protection and surface conductivity, finishes such as nickel plating are applied by our partners on the parts we die-cast.
The mould is designed by our technical office and made under our direct supervision; it remains the customer’s property and is guaranteed for 400,000 shots produced on our presses. Every batch is traceable and dimensional checks are carried out on our in-house CMM, with initial sampling (PPAP/EMPB) on request.
FAQ — Frequently Asked Questions
Does a zamak enclosure shield electromagnetic interference?
Yes: the metal is conductive and a closed zamak shell shields far better than a plastic one. The result depends on the contacts between parts and on the openings, which we assess on the drawing.
Is zamak suitable for heat sinks?
Yes for moderate thermal loads, keeping the service temperature within about 100 °C. For high power, aluminium is usually the better choice.
Why is zamak used in electronics?
Zamak provides excellent EMI/RFI shielding thanks to its electrical conductivity, is ideal for heat sinks and enables component miniaturisation.
What electronic components are made from zamak?
Connectors, chassis, EMI shields, heat sinks, PCB supports and protective enclosures for electronic devices.
Does zamak conduct electricity?
Zamak has an electrical conductivity of 27% relative to copper, sufficient for shielding and grounding applications.
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