Handbook for Sound Engineers

(Wang) #1

256 Chapter 10


10.2.4.1 Film Capacitors

Film capacitors consist of alternate layers of metal foil,
and one or more layers of a flexible plastic insulating

Figure 10-16. Color codes for tubular and disk ceramic
capacitors.


Color Digits

Black 0 0 1 ±2.0 pF ±20% 0 0.0 
1
Brown 1 1 10 ±0.1 pF ±1%
33
10
Red 2 2 100 ±2% 75 1.0
100
Orange 3 3 1000 ±3% 150 1.5
1000
Yellow 4 4 230 2.0 10,000
Green 5 5 ±0.5 pF ±5% 300 3.3 +1
Blue 6 6 470 4.7 +10
Violet 7 7 750 7.5 +100
Gray 8 8 0.01 ±0.25 pF 150 to 1500 +1000
White 9 9 0.1 ±1.0 pF 10% +100 to 75 +10,000
Gold — —
Silver — —

Capacitance in picofarads

Temperature coefficient
1st & 2nd significant digit
Capacitance multiplier
Tolerance

1st & 2nd significant digit
Capacitance multiplier
Tolerance

Temperature coefficient multiplier

Temperature coefficient
1st & 2nd significant digit
Capacitance multiplier
Tolerance

Temperature coefficient

Five dot color code
radial lead

Five dot color code
axial lead

Six dot color code
radial lead

Temperature coefficient
1st & 2nd digits
Multiplier Multiplier
Tolerance

Five dot color code Three dot color code

Tubular Ceramic Capacitors

Ceramic Disk Capacitor

Rated dc voltage

Positive

Positive lead (longer)

47
35 V

Capacitance (MF)

Ceramic Disk Capacitor

Multiplier

Temperature coefficient
¾10 pF >10 pF

Tolerance
ppoC

5 dot 6 dot
1st 2nd Sig. Fig. Multiplier

Figure 10-17. Color codes for mica capacitors.

Black 0 0 1 ±20% 100
Brown B 1 1 10 ±1%
55 oC to +85°C
Red C 2 2 100 ±2% 300
Orange D 3 3 1000 55°C to +125°C
Yellow E 4 4 10,000 500
Green F 5 5 ±5%
Blue 6 6
Violet 7 7
Gray 8 8
White 9 9
Gold – – 0.1 ±0.5% 1000
Silver – – 0.01 ±10%

Color Char. Digits Multiplier Tolerance dc Operating
1st 2nd working temperature
voltage range

White EIA identifier indicates mica capacitor

1 st significant figure
2 nd significant figure
Indicator style (optional)

Multiplier
Capacitance tolerance
Characteristic

White EIA identifier indicates mica capacitor
1 st significant figure
2 nd significant figure
Indicator style (optional)

Multiplier
Capacitance tolerance
Characteristic
dc working voltage
Operating temperature
Identifier (white)

Nine Dot System

Six Dot System

Characteristic Temperature coefficient Maximum
of capacitance (ppm/oC) capacitance drift
B Not specified Not specified
C ±200 ±0.5% +0.5pF
D ±100 ±0.3% +0.1pF
E 20–(+100) ±0.3% +0.1pF
F 0 to +70 ±0.5% +0.1pF

Mica Capacitor Characteristics
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