Mil-SPEC is a set of standards designed to test durability, ruggedness and reliability. These tests cover extreme environmental variables including temperature, pressure, dust, humidity and vibration testing.
Although ThinkPads have always been known for their robustness, they were not specifically designed to only meet the Mil-SPEC 810G standard. Meeting the standard is just the start of ThinkPad's durability, robustness and reliability. Selected ThinkPad models, including all X & T series, have successfully passed the following tests:
HUMIDITY
91-98%
Subjected to 91-98% humidity at 20°C to 60°C
LOW TEMPERATURE
-20°C
Frozen at -20°C for over 72 hours
HIGH TEMPERATURE
30°-60°C
+30°C to +60°C over 7 x 24 hour cycles
SAND TEST
x6 HOUR CYCLES
Subjected to 140 mesh silica dust for 6 hour cycles
HIGH VIBRATION
MULTIPLE TESTS
Undergoes multiple tests while switched on and off
MECHANICAL SHOCK
x18 TIMES
High acceleration and repeated shock pulses over 18 times
HIGH ALTITUDE
15,000ft
Tests operation at 15,000 feet while running
TEMPERATURE SHOCK
-20° – +60°C
Performs in temperatures oscillating between -20°C and +60°C over 3 cycles of 2 hour duration