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4.4
M TBF
4 1 B
The following MTBF (Mean Time Between Failure) 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.
S ystem MTBF (hours) : (171.636) TBD
2 0 5 B
Notes: Fans usually shipped with Kontron Embedded Modules GmbH products have 50,000-hour typical operating
life. The above estimates assume no fan, but a passive heat sinking arrangement.
Estimated RTC battery life (as opposed to battery failures) is not accounted for in the above figures and need
to be considered for separately. Battery life depends on both temperature and operating conditions. When
the Kontron unit has external power; the only battery drain is from leakage paths.
4.5
E nvironmental Specifications
4 2 B
4.5.1
T emperature
1 3 3 B
The Intel® Mobile Pentium®-M is specified for proper operation when junction temperature is within
the specified range of 0°C to 100°C.
The Intel® 855GM/GME Chipset temperature and the Intel® ICH4 I/O Controller Hub 4 (82801DB) case
temperature are maximum 110°C.
Operating: 0 to +60° C (*) (with appropriate airflow)
®
Non-operating: -10 to +85 °C (non-condensing)
®
Note:
(*) The maximum operating temperature is the maximum measurable temperature on any spot on the
module's surface. You must maintain the temperature according to the above specification.
4.5.2
H umidity
1 3 4 B
Operating: 10% to 90% (non-condensing)
®
Non-operating: 5% to 95% (non-condensing)
®
Kontron User's Guide
coolMonster/PM
15
4 3BSpecifications
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