[ARC5] Postage Stamp Mica Question

[WA5CAB at cs.com]

IF this is a postage stamp package and IF there are two rows of three 
colored dots and IF one row of dots has arrow heads nestled up against three dots 
in one row, the package should be held with the row with arrow heads at the 
top and pointing to the right.  IF the left dot in the upper row is black, 
the code is  for AWS mica (silver and with center dot in lower row silver 
would be paper).  IF the upper left dot is not black .OR. silver .AND. IF the 
lower center dot is not silver, the code is RMA or something else.

Reading left to right upper and then left to right bottom (which transposes 
John's last three colors) we have:

Black = AWS Mica
Green = first significant figure = 5
Brown = second significant figure = 1
Red = Characteristic = C (whatever that means, could be as given below)
Yellow = Tolerance = 4%
Black = Multiplier = 10^0 = x1

So 51 mmf, 4%, Characteristic C, 500 Volt**

** All AWS Mica capacitors with three arrow heads below 6800 mmf are rated 
500 VDC.  6800 through 10,000 are rated 300 VDC.

Reference AN 16-40BC224-2 pp 7-4 & 7-5

Note that leading zeros are not significant (except to computer sorting or 
indexing code) and therefore the first significant figure's color cannot be 
black.

Another AWS chart in AN 16-35TS375-3 has a broad arrow surrounding the top 
row of three dots and doesn't say anything about a code ID dot or dots.  It 
would yield 051 mmf and characteristic C (identified here as +/- 200 
ppm/deg. C) but yellow equates to <blank> on the accompanying chart.  

If the upper row of dots has neither three arrow heads nor a broad arrow

Robert D.

In a message dated 08/09/2013 19:29:18 PM Central Daylight Time, 
jphutch60bj at gmail.com writes: 
> John -
> A Black = 0
> B Green = 5
> B1 Brown = 1
> C Black = 0  0,0's
> E Yellow = 4 4%
> D Red = 2  200V
> I read = 051pF 200V 4%
> I could be wrong?
> Hutch
> 
> 
> 
> On 8/9/2013 4:57 PM, J. Forster wrote:
> >Hi,
> >
> >I'm still working on the ART-4 transmitter and want to put values on the
> >schematic. The unit has about a half dozen 'postage stamp' mica caps.
> >
> >They are all marked like 'Type 5' on thos page:
> >
> >http://www.radioremembered.org/capcode.htm
> >
> >and have 6 color dots.
> >
> >Reading in the correct order, clockwise starting at the top left, the 
> dots
> >are:
> >
> >Black
> >Green
> >Brown
> >Black
> >Yellow
> >Red
> >
> >See the issue? The value SEEMS to be 051 pF; 400 VDC, 2%
> >
> >Question:  Was it ever convention to use a leading zero in color codes 
> for
> >this type of cap? I've never seen it before.
> >
> >Thanks,
> >
> >-John
> >

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480