USB Connector High-Speed Stamping and Plating Guide
USB Connector Types
USB connector manufacturing produces Type-A (4 contacts, 2.0mm pitch), Type-C (24 contacts, 0.5mm pitch), micro and mini formats. Materials: phosphor bronze C5191 for spring contacts, brass C2680 for shells.
Durability: 10,000 cycles minimum for Type-C, 20,000 for ruggedized. Gold flash 0.05-0.1μm on contact area for corrosion resistance.
| Type | Contacts | Pitch | Cycle Life |
|---|---|---|---|
| USB Type-A | 4 | 2.0mm | 1,500 |
| USB Type-C | 24 | 0.5mm | 10,000 |
| Micro USB | 5 | 0.65mm | 10,000 |
| HDMI | 19 | 0.5mm | 10,000 |
Stamping Process
High-speed stamping at 200-600 SPM. Progressive dies with 20-40 stations. Strip thickness 0.1-0.3mm for contacts. Carbide dies for 10M+ stroke life. In-die sensing for process monitoring.
Burr control under 0.03mm. Contact form verification with in-line vision system. Reel-to-reel selective gold plating.
| Parameter | Value | Inspection |
|---|---|---|
| Speed | 200-600 SPM | Vision system |
| Die Stations | 20-40 | In-die sensing |
| Strip Thickness | 0.1-0.3mm | Laser mic |
| Burr | <0.03mm | Microscope |
Assembly and Test
Terminal insertion into molded housing. Shield solder or crimp. Electrical tests: contact resistance (<30mΩ), insulation (>100MΩ), dielectric (500VAC), VSWR for high-speed. ESD control throughout assembly.
Visual inspection for terminal alignment. Pull force for terminal retention. Mating force measurement.
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