Mallory date code ?
Henry Kolesnik
caps a 1900ufd at 450v? Here's a couple of lines..
CGS192T450X5L3PH
235-8112K
Thanks
--
73
Hank WD5JFR
junebug1701
wrote:
> Does anyone know the date codes that Mallory uses on their electrolytic
> caps a 1900ufd at 450v? Here's a couple of lines..
> CGS192T450X5L3PH
> 235-8112K
> Thanks
If I'd have to guess, Hank, I would say that cap was made in the 12th
week of 1981. That's according to the last 4 digits.
James
Franc Zabkar
<kole...@nojunksbcglobal.net> put finger to keyboard and composed:
>Does anyone know the date codes that Mallory uses on their electrolytic
>caps a 1900ufd at 450v? Here's a couple of lines..
>CGS192T450X5L3PH
>235-8112K
>Thanks
I have three screw terminal Mallory caps with the following markings:
MALLORY
MADE IN U.S.A
TYPE CGS
30000MFD 15VDC
POS + 85C
MAX SURGE 20VDC
95661319
235-8102K
MALLORY
MADE IN U.S.A
TYPE CGS
29000MFD 15VDC
POS + 85C
MAX SURGE 30VDC
CGS293U025R4C3PH
235-8532K
MALLORY
MADE IN U.S.A
TYPE CGS
21000MFD 16 VDC
POS + 85C
MAX SURGE 20 VDC
CGS213U016R3L
362 8906 56699
They all date from around the early 80s.
Here they are pictured among Sprague caps of the same vintage:
http://www.users.on.net/~fzabkar/screwcaps70.jpg
I'd say that 8112 is a YYWW date code.
- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
hifi-tek
<snip>
> MALLORY
> MADE IN U.S.A
> TYPE CGS
> 21000MFD 16 VDC
> POS + 85C
> MAX SURGE 20 VDC
> CGS213U016R3L
> 362 8906 56699
>
> They all date from around the early 80s.
>
> Here they are pictured among Sprague caps of the same vintage:
> http://www.users.on.net/~fzabkar/screwcaps70.jpg
>
> I'd say that 8112 is a YYWW date code.
It is a YYMM date code. I have several pieces of vintage medical electronics
equip, and the date codes on the Mallory caps all match closely the date
codes on other parts.
"> MALLORY
> MADE IN U.S.A
> TYPE CGS
> 30000MFD 15VDC
> POS + 85C
> MAX SURGE 20VDC
> 95661319
> 235-8102K
This one is from Feb 1982 - and it's Kosher too. ;-)
>
Remember Sprague's motto?
Don't be vague, ask for Sprague.
a little levity . . . very little . . .
Regards,
Tom
Franc Zabkar
<t.ho...@insightbb.com> put finger to keyboard and composed:
>> I'd say that 8112 is a YYWW date code.
>
>It is a YYMM date code.
Then how do you account for the "32" in "235-8532K"?
Here are two more caps, with date codes of 7945 and 8102:
MALLORY
MADE IN U.S.A
CGS591T200R3C3PL
590MFD 200VDC
POS + 85C
MAX SURGE 250VDC
1014861-00
235-7945K
MALLORY
BIONOL
CAPACITOR
6MFD
660 VAC
60 HZ NO PCBS
95686701
37NB6606
PROTECTED
C 200 AFC
64591 PTD
8102-1
Syl
> On Tue, 23 Sep 2008 18:24:47 -0400, "hifi-tek"
> <t.ho...@insightbb.com> put finger to keyboard and composed:
>
>>> I'd say that 8112 is a YYWW date code.
>> It is a YYMM date code.
>
> Then how do you account for the "32" in "235-8532K"?
It IS YYWW (that is year and week)
so....235-8532 means 1985, 32nd week. That is why the K is there...
Syl
John Byrns
I agree that it is YYWW, but I don't understand what you are saying the reason
is that the "K" is there? Why is the "K" there?
--
Regards,
John Byrns
Surf my web pages at, http://fmamradios.com/
Syl
>>> On Tue, 23 Sep 2008 18:24:47 -0400, "hifi-tek"
>>> <t.ho...@insightbb.com> put finger to keyboard and composed:
>>>
>>>>> I'd say that 8112 is a YYWW date code.
>>>> It is a YYMM date code.
>>> Then how do you account for the "32" in "235-8532K"?
>> It IS YYWW (that is year and week)
>> so....235-8532 means 1985, 32nd week. That is why the K is there...
>
> I agree that it is YYWW, but I don't understand what you are saying the reason
> is that the "K" is there? Why is the "K" there?
>
weeK, to avoid any possible confusion to the date format used.
Syl
VZ/res0zhra
I have two that have the code 235-6039H. Looks like the 39th weeH of 1960.
John Byrns
That's where I figured you were headed with the "K", but typically the YYWW date
code, as used on semiconductors for example, is used without a format indicator,
in fact IIRC some versions of the YYWW date code scramble the digits in one way
or another to obscure their meaning.
I wonder if the "K" might not have another meaning, such as a code to indicate
which of several factories the device was produced in? If that is the case, the
fact that "K" is the last letter in "week" might just be a coincidence.
maa...@panic.xx.tudelft.nl
> I wonder if the "K" might not have another meaning, such as a code to indicate
> which of several factories the device was produced in? If that is the case, the
> fact that "K" is the last letter in "week" might just be a coincidence.
I'm pretty sure it is a coincidence. I have only ever seen such indication
on some Philips equipment where the letters KW (kalenderweek,
kalenderwoche) are printed in front of a 3 or 4 digit code. Every single
other piece of equipment I ever saw with such a code only has letters with
another meaning in front of or after the date code.
--
Met vriendelijke groet,
Maarten Bakker.
Syl
Could well be but so far only found K and was told so.
I was also told the first 3 digits where the factory ID,
can anyone confirm this?
Q: to OP. What country of origin is the cap from?
Could it be a code for country of origin? Like Canada, US...
Syl
raypsi
> John Byrns a crit :
>
> >>>> Franc Zabkar a crit :
> >>>>> On Tue, 23 Sep 2008 18:24:47 -0400, "hifi-tek"
>
> >>>>>>> I'd say that 8112 is a YYWW date code.
> >>>>>> It is a YYMM date code.
> >>>>> Then how do you account for the "32" in "235-8532K"?
> >>>> It IS YYWW (that is year and week)
> >>>> so....235-8532 means 1985, 32nd week. That is why the K is there...
> >>> I agree that it is YYWW, but I don't understand what you are saying the
> >>> reason
> >>> is that the "K" is there? Why is the "K" there?
> >> weeK, to avoid any possible confusion to the date format used.
>
> > That's where I figured you were headed with the "K", but typically the YYWW date
> > code, as used on semiconductors for example, is used without a format indicator,
> > in fact IIRC some versions of the YYWW date code scramble the digits in one way
> > or another to obscure their meaning.
>
> > I wonder if the "K" might not have another meaning, such as a code to indicate
> > which of several factories the device was produced in? If that is the case, the
> > fact that "K" is the last letter in "week" might just be a coincidence.
>
> Could well be but so far only found K and was told so.
>
> I was also told the first 3 digits where the factory ID,
> can anyone confirm this?
>
> Q: to OP. What country of origin is the cap from?
> Could it be a code for country of origin? Like Canada, US...
>
>
> - Show quoted text -
I used to make a living selling P.R. Mallory
the 3 digit code is the manufacturer, 274
is/was RCA. And 235 is/was Mallory.
Ole P.R Mallory used to snap up companies
like RMC and Duracell. When he retired they
started selling off all those companies.
73 OM
n8zu
Michael A. Terrell
raypsi wrote:
>
> I used to make a living selling P.R. Mallory
> the 3 digit code is the manufacturer, 274
> is/was RCA. And 235 is/was Mallory.
> Ole P.R Mallory used to snap up companies
> like RMC and Duracell. When he retired they
> started selling off all those companies.
Now, Mallory (Capacitors) is owned by Cornell Dubiler.
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