STANDARD
COLOR
CODE
—
RESISTORS AND CAPACITORS
AXIAL LEAD
RESISTOR
Brawn
—
Insulated
Black
—
Nan-Ins u
I
ated
o3T
Tolerance
Multiplier
1st and 2nd Significant Figures
Wire wound resistors have
1st digil band
double
width
insulated
FIRST
RING SECOND
RING
THIRD RING
UNINSULATED
BQDV COLOR END COLOR DOT COLOR
Color First Figure
Second
Figure Multiplier
BLACK
0
0
None
BROWN
1 I 0
RED
2
2
00
ORANGE
3
3
,000
YELLOW
4 4 0,000
GREEN
5 5
00,000
BLUE
6 6
000,000
VIOLET 7
7
0,000,000
GRAY
8 8
00,000,000
WHITE
9 9
000,000,000
DISC CERAMIC RMA
CODE
5-Dot 3-Dot
Capacity
Multiplier
Tolerance
Temp. Co eft
RADIAL
LEAD
DOT RESISTOR
Multiplier
1st Figure
2nd
Figure
5-DOT
RADIAL LEAD CERAMIC CAPACITOR
•
Capacity
Multiplier
Tolerance
EXTENDED
RANGE TC CERAMIC HICAP
Temp.
Coe
A.
e,
./
C<*P«»Y
TC
Multiplier
Multiplier tolerance
RADIAL LEAD (BAND) RESISTOR
f
Multiplier
““
BY-PASS COUPLING CERAMIC
CAPACITOR
Tolerance
Ht
Figure
2nd Figure
i/i
1?
i
li
Multiplier
—3
*
Tolerance
Voltage
(Opt.)
AXIAL LEAD
CERAMIC
CAPACITOR
Temp. Co off.
—
—
-
,
—
.
Capacity
ToleranceMultiplier
The standard color code provides all
necessary information
re-
quired to properly identify color coded resistors and capacitors.
Refer to the color code for numerical values and the zeroes or
multipliers
assigned to the
colors
used. A fourth
color
band on
resistors
determines
tolerance
rating
as
follows:
Gold
—
5%,
silver
=
10%.
Absence
of the fourth
band indicates
a
20%
tolerance rating.
MOLDED MICA TYPE
CAPACITORS
The
physical size of carbon
resistors
is determined
by
their
wattage
rating.
Carbon
resistors most commonly used in Heath-
kits are
34
watt,
Higher
wattage
rated resistors
when
specified
are progressively larger in
physical size.
Small
wire
wound
resistors
34
watt, 1 or 2 watt may be color coded
t*ut
the first
band
will
be double width.
White
(RMA)
Black (JAN)
CURRENT
STANDARD CODE
ignifkant
Figure
Class
Multiplier
Tolerance
JAN A
1946
RMA
CODE
RMA 3-DOT
(OBSOLETE)
RATED
500
W.V.D.C.
±
20%
TOL.
Multiplier
I
Significant Figure
BUTTON SILVER MICA
CAPACITOR
Class
—
Tolerance
Multiplier
3rd
digit
RMA (5-DOT OBSOLETE CODE)
|
Significant
Figure
Working
-
Voltage
Multiplier
front
Working
Voltage
Rear
Tolerance
Tolerance
1st
2nd
Working
Voltage
—
Multiplier
Significant Figure
RMA
6-DOT
(OBSOLETE)
*
2nd ^Significant Figures
-3rd.)
-
Multiplier
i
Tolerance
flank
RMA 4-DOT
(OBSOLETE)
Working
Voltage
-
Multiplier
Tolerance
Working
Voltage
—
Multiplier
MOLDED
PAPER
TYPE
CAPACITORS
TUBULAR
CAPACITOR
1st
2nd
[
Significant
Figure
Multiplier
MOLDED FLAT
CAPACITOR
Commercial
Code
!
1
'
Tolerance
Normally
stamped for
value
2nd
1st
A
2
digit voltage
rating indicates more than 900 V.
Add 2 zeros
to
end
of 2 digit number.
Significant
Voltage
Figure
Working
Volts
Multiplier
j-
Significant Figure
IAN.
CODE
CAPACITOR
1st
f
Significant
2nd
f
Figure
Silver
Multiplier
Cba racier! Stic
Tolerance
The tolerance
rating
of
capacitors is determined by the color
code. For example: red
=
2%,
green
=
5%,
etc. The voltage
rating of capacitors is obtained by
multiplying
the color value
by 100. For
example:
orange
=
3
X
100
or
300
volts. Blue
=
6
X
100
or
600
volts
In the design of Healhkits, the
temperature
coefficient of
ceramic
or mica
capacitors
is not
generally
a critical factor
and
there-
fore
Heathkit
manuals
avoid reference to
temperature coeffi-
cient
specifications.
Courtesy
of Central tab
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