Hi,
I’m looking at th R11e series in both 2.4G and 5Ghz for a new product.
The specification online says “Tested Ambient Temperature -40 to 70”. Are the components used in the R11e devices rated to this temperature range?
Thanks,
Hi,
IMHO if it is in specification then it means that all components meet the specification.
Do you expect statement or the certificate for each resistor/capacitor or diode on the board?
1 Like
Thanks @BartoszP
We have found some manufacturers who advertise Industrial Temperature range, but only use commercial grade parts. When we queried one of these manufacturers, they responded that the product was tested to Industrial temperature range, so it was OK for that temperature range. They made no consideration of variation between components, or any other reliability issues that could arise.
I started to wonder if this was “Industry Practice”, so I felt compelled to check before proceeding to work with a new product.
You should send that query directly to Mikrotik. We, Users, are not able to answer such a question.
On the other hand, your extended explanation suggest that you ask quite a different question: does all elements comply with he "specfication X or Y or Z"? It's a little different question. What if heat from PSU is assumed to keep the temperature of elements in the different range than the external one for the device?
Are you aware that "MTBF" is calculated on the base of short tests. One/two weeks of ageing in the lab, measures taken and then the magic formula gives you the expected MTBF to be used.
When CD-ROM started to emerge years ago, there were ads: "Super technology, your disks full of data are safe for more than 30 years. No need to worry, digital data with correction built in ... blah, blah, blah ...". Who remebers CDs now? If you didn't check the content and re-recorded it, then many of our archives vanished as time and light killed our disks. Same applies to tapes, SSDs and other technologies.
On the other, other hand: if new technologies/models/capabilites are expected each year and companys' rules say "devices older than 3 years should be replaced" then why to worry about MTBF so much if it exceeds that 3 years? I know that "mission critical" gear has to be tough as a rock but then you should consider using not a consumer (home) grade devices and expect different level of proices as probably you want some service and SLA too. Not saying that Mikrotik's equipment is not usable in such situations but we should weigh opinions: price vs usability vs MTBF.