Glossary of Terms
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- Fixed Contact (Stationary Contact):The non-moving contact. Typically, integral to the end of the terminal inside the switch body.
- Flash Plating:Plating thickness of 10 micro inches (0.00001) or less, typically done with gold plate.
- Flux:Chemical used for cleaning metal surfaces for welding. Fluxes turn contaminated metal surfaces into clean, solderable part.
- Force (Contact):The force, holding closed contact together.
- Form A:A single pole, single throw, normally open contact or SPST NO.
- Form B:A single pole, single throw, normally closed contact or SPST NC.
- Form C:A single pole, double throw contact or SPDT.
- Form / Switch Form:Please refer to the ITW Switches Characteristics/Circuits for more detail.
- Form Z:A two circuit double break switch such as a Single Pole Double Throw Double Break switch.
- Free Position:The position of the button or toggle of a switch in its normal position. The free position is usually measured from the center of the mounting holes to the top of the button on a basic switch or from the top of the button to a reference point on a pushbutton switch.