Se Jin Electron Inc SKR-3406 Manuel D’Utilisation
3. WORKMANSHIP STANDARDS
3.1 Electrical Criteria
Electrical assemblies and components shall meet the requirements of IPC-A-
610 and J-STD-001, Class-1.
610 and J-STD-001, Class-1.
3.2 Keycap Cosmetics
The legend of keycap has to be printed with LASER MARKING methodology
by SEJIN standard and will have to pass the Sejin abrasion test.
4. ELECTRICAL REQUIREMENTS
4.1 Operating voltage range
DC 5V± 0.25
4.2 Operating current
Max 100mA
4.3 Insulation resistance
More than 100M ohm at 250V DC
4.4 Contact resistance
2K
Ω
or less
4.5 Chattering and bounce
Operation force shall be applied according to the normal operating method at 5V
DC, 5mA.There shall be no bounce and chattering within 10msec when it is
measured using a specially prepared tester or a synchroscope.
DC, 5mA.There shall be no bounce and chattering within 10msec when it is
measured using a specially prepared tester or a synchroscope.
※ Chattering and bounce are defined in the following diagram :
5. ENVIRONMENTAL REQUIREMENTS
The following specifications pertain to the keyboard assembly.
5.1 Operational ambient temperature and humidity
Temperature : 0 ~ 50℃
Humidity : 85%RH
Humidity : 85%RH
5.2 Storage ambient temperature and humidity
Temperature : -20 ~ 60℃
Humidity : 95%RH
Humidity : 95%RH
5.3 Shock
There shall be no abnormally in operation and appearance of the keyboard