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page 87

9.5.2 Capacitors

Capacitors quite often have values printed on them. When the values are not clear, there may be a number code used.

Consider the capacitor with a number code below,

e.g.,

 

 

 

 

Multipliers

 

 

 

 

 

 

1R53K

 

 

 

 

 

 

 

 

 

 

 

 

Tolerances

1 digit ‘1’

R decimal place (optional) 5 digit ‘5’

3 multiplier x1000 K tolerance ±10%

1.5 F ± 10%

0 = x1

1 = x10

2 = x100

3 = x1000

4 = x10000

5 = x100000

8 = x0.01

9 = x0.1

B = ±0.1pF (<10pF) C = ±0.25pF (<10pF) D = ±0.5pF (<10pF)

F = ±1pF (<10pF) = ±1% (>10pF) G = ±2pF (<10pF) = ±2% (>10pF) H = ±3pF (>10pF)

J = ±5pF (>10pF) K = ±10pF (>10pF) M = ±20pF (>10pF)

9.6 FABRICATION

There are a few popular methods of fabrication

-wire wrap

-bin board

-bread board

-circuit board

9.6.1 Shielding and Grounding