Mallory date code ?

[Henry Kolesnik]

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

 

[junebug1701]

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]

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

 

[Franc Zabkar]

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

- Franc Zabkar

 

[Syl]

Franc Zabkar a écrit :

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]

Franc Zabkar a écrit :

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?

--
Regards,

John Byrns

Surf my web pages at, http://fmamradios.com/

 

[Syl]

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]

weeK, to avoid any possible confusion to the date format used.

Syl

I have two that have the code 235-6039H. Looks like the 39th weeH of 1960.

 

[John Byrns]

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.

--
Regards,

John Byrns

Surf my web pages at, http://fmamradios.com/

 

[[email protected]]

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.

 

[Syl]

John Byrns a écrit :

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...

Syl

 

[raypsi]

John Byrns a crit :

John Byrns wrote:




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- Hide quoted text -

- 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