Dielectric withstand voltage testing is useful for design verification, quality control of materials, and workmanship.

This test method is used to verify that the membrane switch can operate safely at its rated voltage, and withstand momentary overpotentials due to switching, surges and other similar electrical phenomena.

Specific areas of testing are, but not limited to:

Conductor/dielectric/conductor crossing point,

Close proximity of conductors, and

Any other conductive surface such as shielding or metal backing panel.

Dielectric withstand voltage testing may be destructive and units that have been tested should be considered unreliable for future use.

Testing using ac voltage may be useful for switches intended for control circuits powered by ac voltages.

1. Scope

1.1 This test method covers the verification of a specified dielectric withstand voltage or dielectric breakdown voltage of a membrane switch.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

F1663 Test Method for Determining the Capacitance of a Membrane Switch

F1680 Test Method for Determining Circuit Resistance of a Membrane Switch

Keywords

dielectric withstand voltage; dielectric breakdown voltage; membrane switch; Dielectric breakdown voltage; Dielectric withstand voltage; Electronic materials/applications; Insulation resistance; Membrane switches; Voltage; Withstand voltage;

ICS Code

ICS Number Code 29.120.40 (Switches)

Citing ASTM Standards

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