Got to arrive at a (very) rough estimate of what a rad-hard circuit would cost. These days such pricing seems to be handled in a very secretive way and going through the sales spiel for a lot of parts is just too time consuming. Does anyone know a site that has at least some pricing info for rad-hard stuff? It's mostly discretes and maybe a gate or BJT driver here and there. Ballpark pricing is all I need at this time. Lead times would be nice as well as most of this is zero stock. -- Regards, Joerg http://www.analogconsultants.com/
Pricing for rad-hard parts
Started by ●March 22, 2018
Reply by ●March 22, 20182018-03-22
On Thursday, March 22, 2018 at 7:20:42 PM UTC-4, Joerg wrote:> Got to arrive at a (very) rough estimate of what a rad-hard circuit > would cost. These days such pricing seems to be handled in a very > secretive way and going through the sales spiel for a lot of parts is > just too time consuming. > > Does anyone know a site that has at least some pricing info for rad-hard > stuff? It's mostly discretes and maybe a gate or BJT driver here and > there. Ballpark pricing is all I need at this time. Lead times would be > nice as well as most of this is zero stock. > > -- > Regards, Joerg > > http://www.analogconsultants.com/Joerg, I have no experience..(Well, the guy down the hall used a photodiode to detect x-rays at an FEL*) But I'd guess a lot depends on the type of radiation. Outer space vs, next to some hot source. George H. (I'm thinking big chunks of Si would be better. 'Shielding' sometimes makes radiation worse.) *IIRCC there was a stack of lead bricks in front of the PD. The right amount of lead soaked up the electrons and other stuff but let enough of the x-rays through... I'm not sure. (?)
Reply by ●March 22, 20182018-03-22
I used to work designing satellites 20 years ago and our golden rule was about 100 to 1000 times the price of a standard component But It may have changed since then Cheers Klaus
Reply by ●March 22, 20182018-03-22
>(I'm thinking big chunks of Si would be better. 'Shielding' sometimes makes radiation worse.) IIRC you're usually better off with SOI parts, because the high energy events that caise the problems also generate most of their carriers deep in the silicon. Cheers Phil Hobbs
Reply by ●March 22, 20182018-03-22
On Thursday, March 22, 2018 at 7:20:42 PM UTC-4, Joerg wrote:> Got to arrive at a (very) rough estimate of what a rad-hard circuit > would cost. These days such pricing seems to be handled in a very > secretive way and going through the sales spiel for a lot of parts is > just too time consuming. > > Does anyone know a site that has at least some pricing info for rad-hard > stuff? It's mostly discretes and maybe a gate or BJT driver here and > there. Ballpark pricing is all I need at this time. Lead times would be > nice as well as most of this is zero stock. > > -- > Regards, Joerg > > http://www.analogconsultants.com/The lab I worked in screened ICs for gamma radiation. The reactor charged $1000 a day. Then there's what we charged for the testing. I can get it done for you, if you need. www.4ctestsystems.com
Reply by ●March 23, 20182018-03-23
On Thursday, March 22, 2018 at 8:31:12 PM UTC-4, pcdh...@gmail.com wrote:> >(I'm thinking big chunks of Si would be better. 'Shielding' sometimes makes radiation worse.) > > IIRC you're usually better off with SOI parts, because the high energy events that caise the problems also generate most of their carriers deep in the silicon. > > Cheers > > Phil HobbsOK that makes sense too. George H.
Reply by ●March 23, 20182018-03-23
On 2018-03-22 17:31, pcdhobbs@gmail.com wrote:>> (I'm thinking big chunks of Si would be better. 'Shielding' >> sometimes makes radiation worse.) > > IIRC you're usually better off with SOI parts, because the high > energy events that caise the problems also generate most of their > carriers deep in the silicon. >That can be tough when you need ICs. The smorgasbord of available devices shrinks from half a gazillion to a small bowl when in need of rad-hard. It can make some designs challenging even if you are McGyver. -- Regards, Joerg http://www.analogconsultants.com/
Reply by ●March 23, 20182018-03-23
On 2018-03-22 17:29, Klaus Kragelund wrote:> I used to work designing satellites 20 years ago and our golden rule > was about 100 to 1000 times the price of a standard component > > But It may have changed since then >Not much. I just have to know whether it's 100x or 1000x :-) Once when designing a hi-rel circuit I was agonizing over the cost of a part. Another engineer saw me staring at the schematic. "Anything wrong?" ... "No, but this little part here costs over 6 bucks" ... roaring laughter ... "To us that is the equivalent of a penny". -- Regards, Joerg http://www.analogconsultants.com/
Reply by ●March 23, 20182018-03-23
On 2018-03-22 19:20, sdy wrote:> On Thursday, March 22, 2018 at 7:20:42 PM UTC-4, Joerg wrote: >> Got to arrive at a (very) rough estimate of what a rad-hard >> circuit would cost. These days such pricing seems to be handled in >> a very secretive way and going through the sales spiel for a lot of >> parts is just too time consuming. >> >> Does anyone know a site that has at least some pricing info for >> rad-hard stuff? It's mostly discretes and maybe a gate or BJT >> driver here and there. Ballpark pricing is all I need at this time. >> Lead times would be nice as well as most of this is zero stock. >> >> -- Regards, Joerg >> >> http://www.analogconsultants.com/ > > The lab I worked in screened ICs for gamma radiation. The reactor > charged $1000 a day. Then there's what we charged for the testing. > > I can get it done for you, if you need. www.4ctestsystems.com >Thanks, I have stored your post in the project folder because at some point we may need such a service. -- Regards, Joerg http://www.analogconsultants.com/
Reply by ●March 24, 20182018-03-24
On Thu, 22 Mar 2018 17:31:07 -0700 (PDT), pcdhobbs@gmail.com wrote:>>(I'm thinking big chunks of Si would be better. 'Shielding' sometimes makes radiation worse.) � > >IIRC you're usually better off with SOI parts, because the high energy events that caise the problems also generate most of their carriers deep in the silicon.When we were first doing the GameCube CPU (a modified PPC750 in SOI) design one of the guys had to design a radiation detector to disable the chip so it couldn't be used for military applications. Before we actually had to make the part the ITAR rules changed so a video game was no longer a weapon of war.
