Hi, all,

Many of us have been frustrated by Samsung's continually hiding its MLCC
characteristics data, so that even their own search engine frequently
can't hide it.

For instance, the CL21A475KPFNNNE is listed as 4.7 uF, 10%, 10V, X5R in
0805. Digikey has over 800k in stock, and will happily sell them to you
for under 2 cents in reels. Not bad at all, assuming their C(V) is
vaguely decent, but is it? The characteristics links are broken again!

One approach that seems to fix this is to take the part number, chop off
the last character (the package code), and make it into a URL, like this:

http://product.samsungsem.com/mlcc/CL21A475KPFNNN.do

That pulls up a useful summary page with the relevant plots, showing
that the capacitance is 70% of nominal at 5 volts--not bad for such a
high-density part.

Dunno how long this trick will work, but it seems good for now.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

04.02.22 21:16, Phil Hobbs wrote:
>Hi, all,
>
>Many of us have been frustrated by Samsung's continually hiding its MLCC
>characteristics data, so that even their own search engine frequently
>can't hide it.
>
>For instance, the CL21A475KPFNNNE is listed as 4.7 uF, 10%, 10V, X5R in
>0805. Digikey has over 800k in stock, and will happily sell them to you
>for under 2 cents in reels. Not bad at all, assuming their C(V) is
>vaguely decent, but is it? The characteristics links are broken again!
>
>One approach that seems to fix this is to take the part number, chop off
>the last character (the package code), and make it into a URL, like this:
>
>http://product.samsungsem.com/mlcc/CL21A475KPFNNN.do
>
>That pulls up a useful summary page with the relevant plots, showing
>that the capacitance is 70% of nominal at 5 volts--not bad for such a
>high-density part.
>
>Dunno how long this trick will work, but it seems good for now.
>
Samsung is known for producing caps with high density, but horrible C vs V rating

--
Klaus

Klaus Kragelund <klauskvik@hotmail.com> wrote:
....
>>
> Samsung is known for producing caps with high density, but horrible C vs V rating
>
But the data given for CL21A475KPFNNNE seems not so bad. Do other 0805
4u7/10V behave substantial better?

Any idea for a better MLC capacitor specification than xuF/yV ? C@Vmax?
Energy (U*U *C/ 2) ?
--
Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 1623569 ------- Fax. 06151 1623305 ---------

On Fri, 04 Feb 2022 22:36:19 +0100, Klaus Kragelund
<klauskvik@hotmail.com> wrote:

>04.02.22 21:16, Phil Hobbs wrote:
>>Hi, all,
>>
>>Many of us have been frustrated by Samsung's continually hiding its MLCC
>>characteristics data, so that even their own search engine frequently
>>can't hide it.
>>
>>For instance, the CL21A475KPFNNNE is listed as 4.7 uF, 10%, 10V, X5R in
>>0805. Digikey has over 800k in stock, and will happily sell them to you
>>for under 2 cents in reels. Not bad at all, assuming their C(V) is
>>vaguely decent, but is it? The characteristics links are broken again!
>>
>>One approach that seems to fix this is to take the part number, chop off
>>the last character (the package code), and make it into a URL, like this:
>>
>>http://product.samsungsem.com/mlcc/CL21A475KPFNNN.do
>>
>>That pulls up a useful summary page with the relevant plots, showing
>>that the capacitance is 70% of nominal at 5 volts--not bad for such a
>>high-density part.
>>
>>Dunno how long this trick will work, but it seems good for now.
>>
>Samsung is known for producing caps with high density, but horrible C vs V rating

It's about 3.5 uF at the rated 10 volts. That's actually not bad.

--

John Larkin Highland Technology, Inc trk

The cork popped merrily, and Lord Peter rose to his feet.
"Bunter", he said, "I give you a toast. The triumph of Instinct over Reason"

John Larkin wrote:
> On Fri, 04 Feb 2022 22:36:19 +0100, Klaus Kragelund
> <klauskvik@hotmail.com> wrote:
>
>> 04.02.22 21:16, Phil Hobbs wrote:
>>> Hi, all,
>>>
>>> Many of us have been frustrated by Samsung's continually hiding its MLCC
>>> characteristics data, so that even their own search engine frequently
>>> can't hide it.
>>>
>>> For instance, the CL21A475KPFNNNE is listed as 4.7 uF, 10%, 10V, X5R in
>>> 0805. Digikey has over 800k in stock, and will happily sell them to you
>>> for under 2 cents in reels. Not bad at all, assuming their C(V) is
>>> vaguely decent, but is it? The characteristics links are broken again!
>>>
>>> One approach that seems to fix this is to take the part number, chop off
>>> the last character (the package code), and make it into a URL, like this:
>>>
>>> http://product.samsungsem.com/mlcc/CL21A475KPFNNN.do
>>>
>>> That pulls up a useful summary page with the relevant plots, showing
>>> that the capacitance is 70% of nominal at 5 volts--not bad for such a
>>> high-density part.
>>>
>>> Dunno how long this trick will work, but it seems good for now.
>>>
>> Samsung is known for producing caps with high density, but horrible C vs V rating
>
> It's about 3.5 uF at the rated 10 volts. That's actually not bad.
>
For a one-point-seven-cent cap, it's practically miraculous.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:
> John Larkin wrote:
>> On Fri, 04 Feb 2022 22:36:19 +0100, Klaus Kragelund
>> <klauskvik@hotmail.com> wrote:
>>
>>> 04.02.22 21:16, Phil Hobbs wrote:
>>>> Hi, all,
>>>>
>>>> Many of us have been frustrated by Samsung's continually hiding its MLCC
>>>> characteristics data, so that even their own search engine frequently
>>>> can't hide it.
>>>>
>>>> For instance, the CL21A475KPFNNNE is listed as 4.7 uF, 10%, 10V, X5R in
>>>> 0805. Digikey has over 800k in stock, and will happily sell them to you
>>>> for under 2 cents in reels. Not bad at all, assuming their C(V) is
>>>> vaguely decent, but is it? The characteristics links are broken again!
>>>>
>>>> One approach that seems to fix this is to take the part number, chop off
>>>> the last character (the package code), and make it into a URL, like this:
>>>>
>>>> http://product.samsungsem.com/mlcc/CL21A475KPFNNN.do
>>>>
>>>> That pulls up a useful summary page with the relevant plots, showing
>>>> that the capacitance is 70% of nominal at 5 volts--not bad for such a
>>>> high-density part.
>>>>
>>>> Dunno how long this trick will work, but it seems good for now.
>>>>
>>> Samsung is known for producing caps with high density, but horrible C vs V rating
>>
>> It's about 3.5 uF at the rated 10 volts. That's actually not bad.
>>
> For a one-point-seven-cent cap, it's practically miraculous.

Bought a reel, just in case -- BTW, that one-point-seven-cent is a ripoff :)
Avnet has 292,000 (290,000 already) in stock for $15.40 plus $3.54 tariff
per reel that comes to ZERO-point-nine-forty-five-cent out of the door :)

---
******************************************************************
* KSI@home KOI8 Net < > The impossible we do immediately. *
* Las Vegas NV, USA < > Miracles require 24-hour notice. *
******************************************************************

On Fri, 4 Feb 2022 23:50:29 -0000 (UTC), Sergey Kubushyn
<ksi@koi8.net> wrote:

>Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:
>> John Larkin wrote:
>>> On Fri, 04 Feb 2022 22:36:19 +0100, Klaus Kragelund
>>> <klauskvik@hotmail.com> wrote:
>>>
>>>> 04.02.22 21:16, Phil Hobbs wrote:
>>>>> Hi, all,
>>>>>
>>>>> Many of us have been frustrated by Samsung's continually hiding its MLCC
>>>>> characteristics data, so that even their own search engine frequently
>>>>> can't hide it.
>>>>>
>>>>> For instance, the CL21A475KPFNNNE is listed as 4.7 uF, 10%, 10V, X5R in
>>>>> 0805. Digikey has over 800k in stock, and will happily sell them to you
>>>>> for under 2 cents in reels. Not bad at all, assuming their C(V) is
>>>>> vaguely decent, but is it? The characteristics links are broken again!
>>>>>
>>>>> One approach that seems to fix this is to take the part number, chop off
>>>>> the last character (the package code), and make it into a URL, like this:
>>>>>
>>>>> http://product.samsungsem.com/mlcc/CL21A475KPFNNN.do
>>>>>
>>>>> That pulls up a useful summary page with the relevant plots, showing
>>>>> that the capacitance is 70% of nominal at 5 volts--not bad for such a
>>>>> high-density part.
>>>>>
>>>>> Dunno how long this trick will work, but it seems good for now.
>>>>>
>>>> Samsung is known for producing caps with high density, but horrible C vs V rating
>>>
>>> It's about 3.5 uF at the rated 10 volts. That's actually not bad.
>>>
>> For a one-point-seven-cent cap, it's practically miraculous.
>
>Bought a reel, just in case -- BTW, that one-point-seven-cent is a ripoff :)
>Avnet has 292,000 (290,000 already) in stock for $15.40 plus $3.54 tariff
>per reel that comes to ZERO-point-nine-forty-five-cent out of the door :)
>
>---
>******************************************************************
>* KSI@home KOI8 Net < > The impossible we do immediately. *
>* Las Vegas NV, USA < > Miracles require 24-hour notice. *
>******************************************************************

Why do people bother to make passives for under a cent and fabulous
transistors for three cents?

--

John Larkin Highland Technology, Inc trk

The cork popped merrily, and Lord Peter rose to his feet.
"Bunter", he said, "I give you a toast. The triumph of Instinct over Reason"

On Saturday, February 5, 2022 at 12:20:22 PM UTC+11, John Larkin wrote:
> On Fri, 4 Feb 2022 23:50:29 -0000 (UTC), Sergey Kubushyn
> <k...@koi8.net> wrote:
>
> >Phil Hobbs <pcdhSpamM...@electrooptical.net> wrote:
> >> John Larkin wrote:
> >>> On Fri, 04 Feb 2022 22:36:19 +0100, Klaus Kragelund
> >>> <klau...@hotmail.com> wrote:
> >>>
> >>>> 04.02.22 21:16, Phil Hobbs wrote:
> >>>>> Hi, all,
> >>>>>
> >>>>> Many of us have been frustrated by Samsung's continually hiding its MLCC
> >>>>> characteristics data, so that even their own search engine frequently
> >>>>> can't hide it.
> >>>>>
> >>>>> For instance, the CL21A475KPFNNNE is listed as 4.7 uF, 10%, 10V, X5R in
> >>>>> 0805. Digikey has over 800k in stock, and will happily sell them to you
> >>>>> for under 2 cents in reels. Not bad at all, assuming their C(V) is
> >>>>> vaguely decent, but is it? The characteristics links are broken again!
> >>>>>
> >>>>> One approach that seems to fix this is to take the part number, chop off
> >>>>> the last character (the package code), and make it into a URL, like this:
> >>>>>
> >>>>> http://product.samsungsem.com/mlcc/CL21A475KPFNNN.do
> >>>>>
> >>>>> That pulls up a useful summary page with the relevant plots, showing
> >>>>> that the capacitance is 70% of nominal at 5 volts--not bad for such a
> >>>>> high-density part.
> >>>>>
> >>>>> Dunno how long this trick will work, but it seems good for now.
> >>>>>
> >>>> Samsung is known for producing caps with high density, but horrible C vs V rating
> >>>
> >>> It's about 3.5 uF at the rated 10 volts. That's actually not bad.
> >>>
> >> For a one-point-seven-cent cap, it's practically miraculous.
> >
> >Bought a reel, just in case -- BTW, that one-point-seven-cent is a ripoff :)
> >Avnet has 292,000 (290,000 already) in stock for $15.40 plus $3.54 tariff
> >per reel that comes to ZERO-point-nine-forty-five-cent out of the door :)
>
> Why do people bother to make passives for under a cent and fabulous
> transistors for three cents?

Because it lets them sell a lot of them. Sell enough of them and you can make millions, and it's hard for the competition to undercut those sorts of prices.

--
Bill Sloman, Sydney

On Friday, February 4, 2022 at 5:20:22 PM UTC-8, John Larkin wrote:

> Why do people bother to make passives for under a cent and fabulous
> transistors for three cents?

For three cents each, of course.

A modest CPU nowadays can have a billion transistors under $100,
so the Intel i3 comes in at 0.000 007 cents per transistor. That's better
than the per-letter price of my Sunday paper.

On Fri, 04 Feb 2022 17:20:10 -0800, John Larkin
<jjlarkin@highlandtechnology.com> wrote:

>On Fri, 4 Feb 2022 23:50:29 -0000 (UTC), Sergey Kubushyn
><ksi@koi8.net> wrote:
>
>>Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:
>>> John Larkin wrote:
>>>> On Fri, 04 Feb 2022 22:36:19 +0100, Klaus Kragelund
>>>> <klauskvik@hotmail.com> wrote:
>>>>
>>>>> 04.02.22 21:16, Phil Hobbs wrote:
>>>>>> Hi, all,
>>>>>>
>>>>>> Many of us have been frustrated by Samsung's continually hiding its MLCC
>>>>>> characteristics data, so that even their own search engine frequently
>>>>>> can't hide it.
>>>>>>
>>>>>> For instance, the CL21A475KPFNNNE is listed as 4.7 uF, 10%, 10V, X5R in
>>>>>> 0805. Digikey has over 800k in stock, and will happily sell them to you
>>>>>> for under 2 cents in reels. Not bad at all, assuming their C(V) is
>>>>>> vaguely decent, but is it? The characteristics links are broken again!
>>>>>>
>>>>>> One approach that seems to fix this is to take the part number, chop off
>>>>>> the last character (the package code), and make it into a URL, like this:
>>>>>>
>>>>>> http://product.samsungsem.com/mlcc/CL21A475KPFNNN.do
>>>>>>
>>>>>> That pulls up a useful summary page with the relevant plots, showing
>>>>>> that the capacitance is 70% of nominal at 5 volts--not bad for such a
>>>>>> high-density part.
>>>>>>
>>>>>> Dunno how long this trick will work, but it seems good for now.
>>>>>>
>>>>> Samsung is known for producing caps with high density, but horrible C vs V rating
>>>>
>>>> It's about 3.5 uF at the rated 10 volts. That's actually not bad.
>>>>
>>> For a one-point-seven-cent cap, it's practically miraculous.
>>
>>Bought a reel, just in case -- BTW, that one-point-seven-cent is a ripoff :)
>>Avnet has 292,000 (290,000 already) in stock for $15.40 plus $3.54 tariff
>>per reel that comes to ZERO-point-nine-forty-five-cent out of the door :)
>>
>>---
>>******************************************************************
>>* KSI@home KOI8 Net < > The impossible we do immediately. *
>>* Las Vegas NV, USA < > Miracles require 24-hour notice. *
>>******************************************************************
>
>Why do people bother to make passives for under a cent and fabulous
>transistors for three cents?

Because they know they can oversell quantity, by orders of magnitude,
to low-volume users?

Used to be, you'd sniff out high-volume parts in a range and ride
on the pricing coat-tails of the high-volume purchasers, but at
a sensible quantity for the job.

RL