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A graphic overlay, sometimes called a nameplate, is a printed graphic surface that is placed over top of the internal electronics of a product. The overlay serves multiple purposes. First, it protects the sensitive materials and components from environmental conditions and wear and tear.
Technical Parameters:
| Technical Details | Without tactile feedback | With tactile feedback by snap dome | With tactile feedback by key embossing |
Mechanical Parameters | Keystroke force : 2 N +/- 20% | Keystroke force : 2.5 N +/- 20% | Keystroke force : 1 to 4 N +/- 30 % |
Bounce Distance: 0,21 mm +/-15% | Bounce Distance : 0,48 mm +/-15% | Bounce Distance : 0,5 to 1 mm +/-15% | |
Contact type : Silver | Contact type : Dome+Silver | Contact type : Silver | |
Lifespan: 10 000 000 | Lifespan : 1 000 000 | Lifespan: 1 000 000 | |
| Environmental Parameters | Work Temp. - 25°C - + 65°C | Work Temp.: - 25°C - + 65°C | Work Temp. : - 25°C - + 40°C |
Storage Temp. : - 30°C - + 85°C | Storage Temp. : - 30°C - + 85°C | Storage Temp.: - 30°C - + 70°C | |
| Protection Class : IP 65 | Protection Class : IP 65 | Protection Class : IP 65 | |
| Electrical Parameters | Normal operating voltage: 24 V Max. working voltage : 50 V Min.operating voltage: 1 V Normal operating current: 30 mA Max. controllable power : 500 mW Contact line resistivity : 1 ohm/cm (1 mm spacing) Dielectric strength : 250 Vrms. Insulation impedance at 100 V : > 100 Mohms Max.contact bounce : < 5 ms Compatible with TTL and CMOS circuits | ||
We have made many different types of membrane switch overlay for our customers, which is available to custom make any shape.