Atypical? A 4.7uF/100V film cap is going to be humongous.
Atypical? A 4.7uF/100V film cap is going to be humongous.
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
Do you really want to see the cap drop by 80%?
-- Thanks, Fred.
I want to know where it does. One reason for that is to be able to model overvoltage spikes somewhat properly.
A cap that's spec'd at 100V ought to have graphs that go to 100V. Why don't they do that? From experience I can tell you that this would raise the hackles at agency testing. And that's never a good thing to happen :-)
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
My latest tool for modeling such phenomenon, GetData Graph Digitizer:
It can "read" a data sheet graph and generate a PWL or table fit.
...Jim Thompson
-- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | The only thing bipartisan in this country is hypocrisy
Yes, you had mentioned it. However, there ain't no datasheet data provided for this here part. At least it's incomplete. I see that happen a lot lately :-(
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
[snip]
Measure it yourself, then add that behavior to your simulation... if you use such modern tools :-) ...Jim Thompson
-- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | The only thing bipartisan in this country is hypocrisy
Well ... the design had to be done by evening to go into layout next day. Even Fedex doesn't yet provide supersonic jets plus the 4500ft runway here in town would be kinda scary to land one of those and there's a hill in the straight approach path. Two people have died on it already :-(
I do use a computation machine with a simulator on there. For the LC stuff I used a slide rule though :-)
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
electrical=20
that=20
graph=20
About 1/2 cubic inch any way you pack it. Alternatively i might try the aluminum polymer electrolytics.
"Electrolytic" makes an alarm bell go off in my head against expectation of capacitance refusing to vary with voltage.
Is there a reason for polymer to fix this for aluminum electrolytics?
- Don Klipstein ( snipped-for-privacy@misty.com)
Tantalums are quite excellent (typically 10%, stable enough e.g. for long period timing), but they have a tendancy to explode.
By removing the moist electrolyte from the capacitor, replacing it with a conductive organic polymer, the alpos get tantalum grade performance without the risk of incineration.
Tim
-- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms
They aren't that big anymore. You can get X7R in 2220 but that size is already causing concern WRT stress fracture.
If I could get them in 2.5mm height or less. Plus there's the issue of freezing.
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
Do you know how they take hardcore freezes, like north of the Klondike in January?
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
I have used Oscons on another project. They are very expensive and in this case I need 100V and the height cannot be more than 2.5mm or around
0.100".-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
Oscon aluminum organic polymer are characterized to -55degC., with less than 10% cap reduction. At 4.7uF, ESR is in the 80mR range.
Later developers tend to follow this.
RL
graph
Freezing? Are your catheters used on Demonicrats too? What ever would they be looking for?
that
graph
No, medical is not the only branch I am designing for. It's actually less and less medical which is sort of a good thing (can't get PL coverage because of that). Aerospace, industrial, harsh environment stuff, and so on.
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
that
graph
You had me wondering there. ;-)
that
graph
Can you get PL if it's only industrial?
I find, as soon as you say "computer", the insurance companies run for cover. I don't understand why. ...Jim Thompson
-- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | The only thing bipartisan in this country is hypocrisy
that
graph
AFAICT yes. But if the box "Do you design medical electronics?" is checked you are instantly a pariah.
They like to only insure underwater carpet fires. Heck, they even exclude recalls which makes the whole PL concept pointless for anyone who designs products. I mean, what are they thinking that engineers do? Research in some ivory tower all day long and write nice papers in LaTex?
A chat with an underwriter a few years ago: "So you design products, huh?" ... "Yeah." ... "So how long do they typically remain in production?" ... "Oh, 10, 15 years." ... *THUD*
-- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
I'm not sure if you've actually stated your requirement at some time or another. You seem to be merely floating generalized but limited questions regarding part characteristics.
What is the actual requirement?
RL
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.