CM-BF537 Datasheet, PDF (28/33 Pages) List of Unclassifed Manufacturers – Bluetechnix Mechatronische Systeme GmbH

9 Dependability
9.1 MTBF
Please keep in mind that a part stress analysis would be the only way to obtain significant failure rate results,
because MTBF numbers just represent a statistical approximation of how long a set of devices should last before
failure. Nevertheless, we can calculate an MTBF of the Core Module using the bill of material. We take all the
components into account. The PCB and solder connections are excluded from this estimation. For test conditions
we assume an ambient temperature of 30°C of all Core Module components except the Blackfin® processor (80°C)
and the memories (70°C). We use the MTBF Calculator from ALD (http://www.aldservice.com/) and use the reliability
prediction MIL-217F2 Part Stress standard.
This method resulted in a MTBF of 439232 hours for the CM-BF537E.
CM-BF537_HUM_V3.2.docx
27