Comparative specifications
The following table details travel and rated lifetime specifications of various switch series. Operating force information is excluded because (even if there were a single value per series), manufacturers seldom specified enough data to be able to plot a y = mx + c graph of linear switches (and could not even agree on whether operating force applied to actuation or total travel), and tactile switches are too complex to understand in a numerical fashion.
| Switch | Type | Pretravel | Travel | Bounce time (max) | Resistance (max) | Lifetime | |||
|---|---|---|---|---|---|---|---|---|---|
| Typical | Initial (max) | End of life (max) | Initial | End of life | |||||
| Hi-Tek Dovetail momentary | Metal contact (W/E #1) | 0.075±0.020″ (1.91 mm) | 1.40±0.020″ (3.56 mm) | 0.250 ms | 2 ms | 5 ms | 1 Ω | 10 Ω | 20×10⁶ |
| Hi-Tek Dovetail alternate action | 5×10⁶ | ||||||||
| MEI DN series | Metal contact (silver) | 0.070±0.025″ (1.78 mm) | 0.135″ (3.43 mm) | — | 3 ms | 20 mΩ | — | 15×10⁶ | |
| MEI T-15S momentary | Metal contact | 1.9±0.6 mm | 3.8 mm | — | 5 ms | 100 mΩ | — | 20×10⁶ | |
| MEI T-15S alternate action | 10×10⁴ | ||||||||
| SMK KAS08 Series | Spring over membrane | — | 3.5 mm | — | — | — | 500 Ω | 10×10⁶ | |
| SMK KAS16 Series | Spring over membrane | — | 4 mm | — | — | — | 1000 Ω | 10×10⁶ | |
| SMK KAS19 Series | Scissor | — | 3 mm | — | — | — | — | — | 5×10⁶ |
| SMK KAS20 Series | Scissor | — | 2.3 mm | — | — | — | — | — | 5×10⁶ |
| SMK KBS01 Series | Rubber dome over membrane | — | 3 mm | — | — | — | 500 Ω | 10×10⁶ | |
| SMK KBS03 Series | Rubber dome over membrane | — | 4 mm | — | — | — | 1000 Ω | 10×10⁶ | |
| SMK KBS17 Series | Rubber dome over membrane | — | 3 mm | — | — | — | 1000 Ω | 10×10⁶ | |
| SMK KFS12 Series | Metal dome over membrane | — | 0.3±0.2 mm | — | — | — | 500 Ω | 10×10⁶ | |
| SMK KUS09 Series | Spring over membrane | — | 3.5 mm | — | — | — | 500 Ω | 10×10⁶ | |