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The MTBF estimated value above assumes no fan, but a passive heat sinking arrangement.
Estimated RTC battery life (as opposed to battery failures) is not accounted for and needs to
be considered separately. Battery life depends on both temperature and operating
conditions. When the module is connected to external power, the only battery drain is from
leakage paths.
Figure 6 shows MTBF de-rating values for commercial grade module variant when used in an office or
telecommunications environment. Other environmental stresses (extreme altitude, vibration, salt-water exposure,
etc.) lower MTBF values.
Figure 6: MTBF De-rating Values
COMe-cEL6 E2 x6425RE 16S 2.5G
COMe-cEL6 J6426 & COMe- cEL6 E2 x6425RE
www.kontron.com
COMe-cEL6 - User Guide, Rev.1.2
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