Standards for the operation of electronics in high temperatures?
December 29, 2015 8:46 AM Subscribe
I'm looking for an internationally recognised ISO or IEC style standard or certification, against which I can have an electronic device tested and cleared for use. The temperatures involved are high, but not extreme. The device will be used within a metal enclosure in the Middle East.
I'm familiar with Ingress Protection (IP) ratings for water and solids, the various CE/FCC marks and even the ATEX directive for explosive atmospheres. However, I can't (yet) find anything specific regarding electronic operation under high temperatures.
I'm familiar with Ingress Protection (IP) ratings for water and solids, the various CE/FCC marks and even the ATEX directive for explosive atmospheres. However, I can't (yet) find anything specific regarding electronic operation under high temperatures.
With no other external forces other than Mother Nature involved (eg: things won't be blowing up around it, etc...), and no other identified standards, then I recommend going Mil-Spec also.
Or even if things may blow up, for that matter.
posted by jeporter99 at 9:26 AM on December 29, 2015
Or even if things may blow up, for that matter.
posted by jeporter99 at 9:26 AM on December 29, 2015
I suspect there's a standard like this for automotive engine electronics.
posted by zippy at 10:48 AM on December 29, 2015
posted by zippy at 10:48 AM on December 29, 2015
MIL-STD-810 is actually probably not what you're looking for. It's a test standard, yes, but a) the standard is for how to perform the tests, not to what levels, and b) there's no standards body to sign off on any of the testing. "Certified to MIL-STD-810" is kind of a meaningless statement.
That being said, if you're just looking for guidance to develop an environmental test procedure, then it should be a good resource. If you need something like a CE mark on your device, you won't be getting it.
posted by backseatpilot at 10:55 AM on December 29, 2015
That being said, if you're just looking for guidance to develop an environmental test procedure, then it should be a good resource. If you need something like a CE mark on your device, you won't be getting it.
posted by backseatpilot at 10:55 AM on December 29, 2015
I posed your question to the engineers I'm surrounded by at the moment, who've all done work in the Mid East (oil and gas). There was a little bit of argument about it, so excuse me if my parsing of what they said isn't quite right.
Since the main concern is that the device doesn't get so hot it causes ignition and most stuff is rated to 55C so part failure isn't a concern, you may be able to find your answer about electronic devices in the book(s) Electrical Installations in Hazardous Areas or Locations. (They mentioned both Areas and Locations, and looking it up, I see they're two separate books.) They also mentioned that certain national standards are respected enough internationally that the national standards are often enough, depending on the requirements.
Basically, however, the consensus was that if the IEC doesn't cover it, then if a certification is explicitly needed you may have to have the device custom tested through an international test lab like UL or UE directly, or another kind of testing group that works more specifically with extreme environments, there are apparently a number of them like TWI or NTS. (I think I got those labs right, you're probably more familiar). They did mention that can be incredibly expensive, however.
They also mentioned that besides temperature dust particles can be incredibly problematic. Then they started telling stories and that's all I got.
Hope that helps.
posted by barchan at 11:05 AM on December 29, 2015
Since the main concern is that the device doesn't get so hot it causes ignition and most stuff is rated to 55C so part failure isn't a concern, you may be able to find your answer about electronic devices in the book(s) Electrical Installations in Hazardous Areas or Locations. (They mentioned both Areas and Locations, and looking it up, I see they're two separate books.) They also mentioned that certain national standards are respected enough internationally that the national standards are often enough, depending on the requirements.
Basically, however, the consensus was that if the IEC doesn't cover it, then if a certification is explicitly needed you may have to have the device custom tested through an international test lab like UL or UE directly, or another kind of testing group that works more specifically with extreme environments, there are apparently a number of them like TWI or NTS. (I think I got those labs right, you're probably more familiar). They did mention that can be incredibly expensive, however.
They also mentioned that besides temperature dust particles can be incredibly problematic. Then they started telling stories and that's all I got.
Hope that helps.
posted by barchan at 11:05 AM on December 29, 2015
Depends on the application for which it's rated. In general:
Commercial 0-70°C
Industrial -40 to +85°C
Military -55 to +125°C
But for any device in specific please refer to the data sheet which will give the operating temperature.
posted by St. Peepsburg at 3:05 PM on December 29, 2015
Commercial 0-70°C
Industrial -40 to +85°C
Military -55 to +125°C
But for any device in specific please refer to the data sheet which will give the operating temperature.
posted by St. Peepsburg at 3:05 PM on December 29, 2015
Don't think it's international per se, but I believe still widely accepted ... Does Telcordia (formerly Bellcore) NEBS fit the bill?
The company I work for does tons of design qualification and production screening of our own electronic products for use in extreme environments (oil and gas drilling), some of which operate as high as 200 C. MeMail me if NEBS isn't quite what you're looking for ... I have other resources I can look-up for you.
posted by ZenMasterThis at 6:21 PM on December 29, 2015
The company I work for does tons of design qualification and production screening of our own electronic products for use in extreme environments (oil and gas drilling), some of which operate as high as 200 C. MeMail me if NEBS isn't quite what you're looking for ... I have other resources I can look-up for you.
posted by ZenMasterThis at 6:21 PM on December 29, 2015
jedec.org. Possibly JESD22-A108D, though there may be a better cert.
posted by at at 1:08 AM on December 30, 2015
posted by at at 1:08 AM on December 30, 2015
Response by poster: As is often the way, your (very useful - thanks) answers led me towards more targeted Googling and some better results
It looks like the appropriate certifications for me would be (I'd be interested to hear if you disagree - particularly barchan and ZenMasterThis):
IEC 60068-2-14:2009 - Environmental testing. Tests. Test N. Change of temperature (IEC / BS)
and possibly
IEC 60068-2-2:2007 - Environmental testing. Tests. Test B. Dry heat - (IEC / BS)
The latter, despite sounding more appropriate “do not enable the ability of specimens to withstand or operate during the temperature variations to be assessed".
Both are also BS certifications (just swap ‘BS EN’ for IEC ).
You have to purchase the guideline documents for more detail, but this webpage gives a good overview of the temperature ranges in use (although note that it uses the older versions of the standards):.
posted by MintSauce at 1:43 AM on December 30, 2015
It looks like the appropriate certifications for me would be (I'd be interested to hear if you disagree - particularly barchan and ZenMasterThis):
IEC 60068-2-14:2009 - Environmental testing. Tests. Test N. Change of temperature (IEC / BS)
and possibly
IEC 60068-2-2:2007 - Environmental testing. Tests. Test B. Dry heat - (IEC / BS)
The latter, despite sounding more appropriate “do not enable the ability of specimens to withstand or operate during the temperature variations to be assessed".
Both are also BS certifications (just swap ‘BS EN’ for IEC ).
You have to purchase the guideline documents for more detail, but this webpage gives a good overview of the temperature ranges in use (although note that it uses the older versions of the standards):.
posted by MintSauce at 1:43 AM on December 30, 2015
These look promising ... I guess it really hinges on what "tested and cleared for use" means in your original question. Are you looking for acceptance testing milestone criteria? Are these criteria that need to be agreed to by a customer?
ITU Recommendation O.3 has some interesting stuff, too.
posted by ZenMasterThis at 5:27 AM on December 30, 2015
ITU Recommendation O.3 has some interesting stuff, too.
posted by ZenMasterThis at 5:27 AM on December 30, 2015
This thread is closed to new comments.
posted by radwolf76 at 9:02 AM on December 29, 2015