Kontron COMe Eval Carrier T6 - Manual (Page 11)

COM Express® Eval Carrier Type 6
10
3.5 Environmental Specification
Ambient temperature
» Operating: 0 to +60 °C
» Non-operating: -30 to +85 °C
Humidity
» Operating: 10% to 90% (non condensing)
» Non operating: 5% to 95% (non condensing)
3.6 MTBF
The following MTBF (Mean Time Between Failures) values were calculated using
a combination of manufacturer’s test data, if the data was available, and a
Bellcore calculation for the remaining parts. The Bellcore calculation used
is “Method 1 Case 1”. In that particular method the components are assumed to
be operating at a 50 % stress level in a 40° C ambient environment and the
system is assumed to have not been burned in. Manufacturer’s data has been
used wherever possible. The manufacturer’s data, when used, is specified at
50° C, so in that sense the following results are slightly conservative. The
MTBF values shown below are for a 40° C in an office or telecommunications
environment. Higher temperatures and other environmental stresses (extreme
altitude, vibration, salt water exposure, etc.) lower MTBF values.
» System MTBF: 227731 hours @ 40°C