EIA standards?

[[email protected]]

Where do I get a list of all possible values for Package/Case of
Capacitor? For example: 0805, 1206... There must be a standard out
there and I am not sure which one. I couldn't search on global.ihs.com

Can someone help?

 

[Peter Bennett]

Where do I get a list of all possible values for Package/Case of
Capacitor? For example: 0805, 1206... There must be a standard out
there and I am not sure which one. I couldn't search on global.ihs.com

Can someone help?

From a manufacturer's spec sheets.

There is a standard series of values (same as for resistors) that is
commonly used, but each manufacturer is free to decide what range of
values and dielectric types he can put in a particular package.


--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
new newsgroup users info : http://vancouver-webpages.com/nnq
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca

 

[[email protected]]

From a manufacturer's spec sheets.

There is a standard series of values (same as for resistors) that is
commonly used, but each manufacturer is free to decide what range of
values and dielectric types he can put in a particular package.

I am sure each manufacturer can have their own value but there must be
a rule about making up these Package/Case right? For example, 0805 must
mean something, different from 7361-38. But why it also in the form of
4.3mm x 4.3mm x 4.0mm? Is there a document about "decoding"
Package/Case? Or how do I get a full list of all possible values?

Thanks.

 

[Eeyore]

I am sure each manufacturer can have their own value but there must be
a rule about making up these Package/Case right? For example, 0805 must
mean something, different from 7361-38. But why it also in the form of
4.3mm x 4.3mm x 4.0mm? Is there a document about "decoding"
Package/Case? Or how do I get a full list of all possible values?

0805 refers to the inch size of 0.08" x 0.05".

Graham

 

[[email protected]]

0805 refers to the inch size of 0.08" x 0.05".

Graham

I know 0805 but What about 7361-38 ? Is there a limited number of
sizes? Like is there 0806 or 0905?

 

[Peter Bennett]

I am sure each manufacturer can have their own value but there must be
a rule about making up these Package/Case right? For example, 0805 must
mean something, different from 7361-38. But why it also in the form of
4.3mm x 4.3mm x 4.0mm? Is there a document about "decoding"
Package/Case? Or how do I get a full list of all possible values?

Thanks.

For surface mount resistors and capacitors, there are a series of
standard packages whose sizes are given in units of 0.01 inch - an
0805 package is 0.080 by 0.050 inch, a 1206 is 0.12 by 0.06 inch,
etc... There is a similar series of packages with dimensions given in
metric units.

You still have to look at the manufacturer's data sheets to be sure
what size the package is, and what values and dielectrics are
available in that package size. (When I buy from a North American
distributor, I assume that the package sizes will be in inches.)

--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
new newsgroup users info : http://vancouver-webpages.com/nnq
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca

 

[[email protected]]

For surface mount resistors and capacitors, there are a series of

standard packages whose sizes are given in units of 0.01 inch - an
0805 package is 0.080 by 0.050 inch, a 1206 is 0.12 by 0.06 inch,
etc... There is a similar series of packages with dimensions given in
metric units.

More than often the data sheet does not tell you the meaning. Why
sometime we have something like 1.5mm x 1.7mm but some other time we
have 3.2mm x 2.5mm x 1.3mm?

I also see this format "7361-38" very common too. What does it mean?

 

[Peter Bennett]

More than often the data sheet does not tell you the meaning. Why
sometime we have something like 1.5mm x 1.7mm but some other time we
have 3.2mm x 2.5mm x 1.3mm?

I also see this format "7361-38" very common too. What does it mean?

I don't recognize that format - you'd (still/again) have to look at
the appropriate datasheets to see what the package looks like.
Manufacturers may assign their own arbitrary designators for their own
(or even for "standard") packages.

 

[[email protected]]

I don't recognize that format - you'd (still/again) have to look at

the appropriate datasheets to see what the package looks like.
Manufacturers may assign their own arbitrary designators for their own
(or even for "standard") packages.

Yep, I agree. I did a little research and found this site

http://www.answers.com/topic/surface-mount-technology

So look at this paragraph

# Tantalum capacitors:

* Size A (EIA 3216-18): 3.2 mm × 1.6 mm × 1.6 mm
* Size B (EIA 3528-21): 3.5 mm × 2.8 mm × 1.9 mm
* Size C (EIA 6032-28): 6.0 mm × 3.2 mm × 2.2 mm
* Size D (EIA 7343-31): 7.3 mm × 4.3 mm × 2.4 mm
* Size E (EIA 7343-43): 7.3 mm × 4.3 mm × 4.1 mm

I wonder how do you know it is HxWxD or WxHxD or whatever?

Also for 3216-18, where does number 18 come from?