ASTM F1662-16

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it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F1662 − 10 F1662 − 16
Standard Test Method for
Verifying the Specified Dielectric Withstand Voltage and
Determining the Dielectric Breakdown Voltage of a
1
Membrane Switch or Printed Electronic Device
This standard is issued under the fixed designation F1662; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers the verification of a specified dielectric withstand voltage or dielectric breakdown voltage of a
membrane switch.switch or printed electronic device.
2. Referenced Documents
2
2.1 ASTM Standards:
F1680 Test Method for Determining Circuit Resistance of a Membrane Switch
F1663 Test Method for Determining the Capacitance of a Membrane Switch or Printed Electronic Device
3. Terminology
3.1 Definitions:
3.1.1 dielectric withstand voltage—a voltage, above rated voltage, applied for a specific time between mutually insulated test
points or between an insulated test point and ground, which results in no visual change or specified leakage current.
3.1.2 dielectric breakdown voltage—the voltage at which a disruptive discharge or excessive leakage current occurs.
3.1.3 disruptive discharge—flashover (surface discharge), spark over (air discharge), or breakdown (puncture discharge).
3.1.4 leakage current—current between mutually insulated test points when a voltage is applied.
3.1.5 membrane switch—a momentary switching device in which at least one contact is on, or made of, a flexible substrate.
3.1.6 printed electronic device—electrically functional device manufactured primarily using additive processes, with or without
attached conventional or other electronic components, often in flexible format.
3.1.7 test points—two preselected mutually insulated locations on switch assembly.
4. Significance and Use
4.1 Dielectric withstand voltage testing is useful for design verification, quality control of materials, and workmanship.
4.2 This test method is used to verify that the membrane switch or printed electronic device can operate safely at its rated
voltage, and withstand momentary overpotentials due to switching, surges and other similar electrical phenomena.
4.3 Specific areas of testing are, but not limited to:
4.3.1 Conductor/dielectric/conductor crossing point,
4.3.2 Close proximity of conductors, and
4.3.3 Any other conductive surface such as shielding or metal backing panel.
4.4 Dielectric withstand voltage testing may be destructive and units that have been tested should be considered unreliable for
future use.
4.5 Testing using ac voltage may be useful for switches intended for control circuits powered by ac voltages.
1
This test method is under the jurisdiction of ASTM Committee F01 on Electronics and is the direct responsibility of Subcommittee F01.18 on Membrane SwitchesPrinted
Electronics.
Current edition approved May 1, 2010May 1, 2016. Published June 2010May 2016. Originally approved in 1995. Last previous edition approved in 20042010 as F1662
- 04.10. DOI: 10.1520/F1662-10.10.1520/F1662-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F1662 − 16
5. Interferences
5.1 The following parameters may affect the results of this test:
5.1.1 Humidity,
5.1.2 Contamination, and
5.1.3 Temperature.
6. Apparatus
6.1 Electric Device, suitable to provide a controlled dc or ac voltage, leakage current measurement.
7. Procedure
7.1 Dielectric Withstand Test Method:
7.1.1 Measure and record the following characteristics prior to performing test:Membrane Switch:
7.1.1.1 Open and closed circuit resistance of the test points in accordance with Test Method Measure and record the following
characteristics prior to performing test:F1680.
(1) Open and closed circuit resistance of the test points in accordance with Test Method F1680.
(2) Capacitance of the test point in accordance with F1663.
7.1.1.2 Capacitance of the test point in accordance withConnect two test points on the switch assembly, each to a F1663.separate
polarity, on the vo
...

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F1662 − 16
Standard Test Method for
Verifying the Specified Dielectric Withstand Voltage and
Determining the Dielectric Breakdown Voltage of a
1
Membrane Switch or Printed Electronic Device
This standard is issued under the fixed designation F1662; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope without attached conventional or other electronic components,
often in flexible format.
1.1 This test method covers the verification of a specified
3.1.7 test points—two preselected mutually insulated loca-
dielectric withstand voltage or dielectric breakdown voltage of
tions on switch assembly.
a membrane switch or printed electronic device.
4. Significance and Use
2. Referenced Documents
2
4.1 Dielectric withstand voltage testing is useful for design
2.1 ASTM Standards:
verification, quality control of materials, and workmanship.
F1680 Test Method for Determining Circuit Resistance of a
Membrane Switch
4.2 This test method is used to verify that the membrane
F1663 Test Method for Determining the Capacitance of a
switch or printed electronic device can operate safely at its
Membrane Switch or Printed Electronic Device
rated voltage, and withstand momentary overpotentials due to
switching, surges and other similar electrical phenomena.
3. Terminology
4.3 Specific areas of testing are, but not limited to:
3.1 Definitions:
4.3.1 Conductor/dielectric/conductor crossing point,
3.1.1 dielectric withstand voltage—a voltage, above rated
4.3.2 Close proximity of conductors, and
voltage, applied for a specific time between mutually insulated
4.3.3 Any other conductive surface such as shielding or
test points or between an insulated test point and ground, which
metal backing panel.
results in no visual change or specified leakage current.
4.4 Dielectric withstand voltage testing may be destructive
3.1.2 dielectric breakdown voltage—the voltage at which a
and units that have been tested should be considered unreliable
disruptive discharge or excessive leakage current occurs.
for future use.
3.1.3 disruptive discharge—flashover (surface discharge),
4.5 Testing using ac voltage may be useful for switches
spark over (air discharge), or breakdown (puncture discharge).
intended for control circuits powered by ac voltages.
3.1.4 leakage current—current between mutually insulated
5. Interferences
test points when a voltage is applied.
3.1.5 membrane switch—a momentary switching device in
5.1 The following parameters may affect the results of this
which at least one contact is on, or made of, a flexible test:
substrate.
5.1.1 Humidity,
5.1.2 Contamination, and
3.1.6 printed electronic device—electrically functional de-
5.1.3 Temperature.
vice manufactured primarily using additive processes, with or
6. Apparatus
1
6.1 Electric Device, suitable to provide a controlled dc or ac
This test method is under the jurisdiction of ASTM Committee F01 on
Electronics and is the direct responsibility of Subcommittee F01.18 on Printed voltage, leakage current measurement.
Electronics.
Current edition approved May 1, 2016. Published May 2016. Originally
7. Procedure
approved in 1995. Last previous edition approved in 2010 as F1662 - 10. DOI:
10.1520/F1662-16.
7.1 Dielectric Withstand Test Method:
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7.1.1 Membrane Switch:
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.1.1.1 Measure and record the following characteristics
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. prior to performing test:
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F1662 − 16
(1) Open and closed circuit resistance of the test points in 7.2.3 Record visual changes and magnitude of breakdown
accordance with Test Method F1680. voltage, if any.
(2) Capacitance of the test point in accordance with F1663. 7.2.4 Dissipate all charges to ground using appropriate
7.1.1.2 Connect two test points on the switch assembly, each methods prior to continuing test to additional test points (repeat
to a separate polarity, on the voltage source. 7.2.1 to 7.2.4).
7.1.2 Printed Electronic Device:
8. Report
7.1.2.1 Measure and record functional test data based on
specification for the device.
8.1 Report the following information:
7.1.3 Select test voltage from Table 1. 8.1.1 Temperature,
7.1.4 Apply the test voltage from zero to specified value as
8.1.2 Relative humidity,
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uniformly as possib
...