Getting to know the Press-Fit Technology | An effective electrical press-fit connection is created by pressing a pin into the plated through hole of a circuit board and – as part of cold welding process – generating a gas-tight electrical connection. |
The through-hole plating for a press-fit system is essentially made in the same way as are the holes for accepting components for THT soldering. Thus there are no changes required in the pcb manufacturing process. | |
One outstanding characteristic of the press-fit system compared to the soldering system is that it produces not only an electrical connection but also an extraordinarily strong mechanical connection between the inserted components and the pcb. | |
Lowest FIT value (Failure in Time) of the overall system. It is up to 30 times better than that of an SMT solder joint. A single solid press pin has a typical extraction force of 100 N or approximately 70% of the insertion force. Therefore press-fit connections are predestined to provide not only electrical but also mechanical connection solutions for electrical components. |
(derating measurements for power elements with flat pins only)
Take advantage
- Transfer up to 10A/per Pin
- No special tools required. A simple lever press is sufficient
- extremely high environmental and mechanical stability
- Low-resistance connection (< 200 μΩ) means low self-heating; hence less heat must be dissipated through the system
- No heat development on sensitive components and no thermal stress of the circuit board
- No cold solder joints
- High mechanical retaining forces
- Double-sided mounting of circuit boards is possible
- Much higher long-term reliability as for solder connections
- More secure than soldering and screw connections
- No changes in the production of circuit boards necessary
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