
1.General specification
1.1 Scope
This specification covers the requirements for single key switches which have no key top(TACT SWITCHES:MECHANICAL CONTACT).
1.2 Operating Temperature Range
-20 to +70 ℃ , (normal humidity,normal press.)
1.3 Storage Temperature Range
-25 to +85 ℃ , (normal humidity,normal press.)
1.4Test Conditions
Tests and measurements shall be made in the following standard conditions unless otherwise specified:
Normal temperature (temperature 5 to 35 ℃)
Normal humidity (relative humidity 45 to 85% ) Normal pressure (pressure 860 to 1060 mbars)
2.TYPE OF ACTUATION
Tactile feedback
3.CONTACT ARRANGEMENT
1 1 1 poles 1 throws
(Details of contact arrangement are given in the assembly drawings.)
4.MAXIMUM RATINGS DC 12 V 50 mA
5.Appearance and structure
5.1:Appearance:It should no obvious shrinkin 、upset metal、Scrape、plating path well-distributed and no coming off.
5.2:Size:Making (drawing attached) 2
6. General specification
6.1Electrical properties
|
Item
|
Test Condition |
Requirements |
| 6.1.1 |
Contact Resistance
|
1 (kHz).Applying static load twice the actuating force to the center of the stem, measurements shall be made with a 1 kHz small-current contact resistance meter. |
100 mΩ≤ 100 mΩ |
| 6.1.2 |
Insulation Resistance |
DC 100 V/
Measurements shall be made following application of DC 100 V potential between terminals and between individual terminals and frame for one minute.
|
100 MΩ≥ 100 MΩ |
| 6.1.3 |
Dielectric withstanding voltage
|
,AC 250 V (50HZ-60HZ)
AC 250 V (50Hz or 60Hz) shall be applied between terminals and between individual terminals and frame for one minute.
|
There shall be no breakdown |
| 6.1.4 |
Bounce |
( 3 - 4 ),Lightly striking the center of the stem at a rate encountered in normal use( 3 to 4 operations per sec),Bounce shall be tested when"ON" and "OFF"
|
10 mS |