Type
Resistor
Resistor
Preset Cermet
Potentiometer
Potentiometer
Capacitor
Ceramic
Capacitor
Electrolytic
Transistors
Electronic Wattmeter
Chapter 4
Rating
Tolerance
Fixing Positions
1/8W
or
more
±5%
PWB hole ctrs R23, 26, 27, 29, 31,
0.6". Resistor 37, 38, 40, 45, 46,
dia. less than
0.2"
47,48,49
1/2W
±1%
PWB hole ctrs
R2
to 20, R25, 28, 30,
0.8".
Resistor dia.
32,34, 39,41,
43,50,
less than 0 .2"
51
0.1W or more
20%
or
less
see fig 4.12
R22,33,35,42,44
0.1W
20%
16mm body dia.
R21
4mm shaft dia.
7mm bush
25V
+50
-25%
see PWB
C1,
2,
5
35V
see PWB
C3,
4
------
--r
-----1-
;16·:2)
I I I
--C)---:--
-G)--
-.
I I I
I I
1014
II>
I
. 0.2"
(5.1)
Fig 4.12
If the Ferranti transistor types are not. available the following
types bearing EIA or Pro-Electron type numbers may be used.
This table does not imply that the types listed are equivalents
in
any other situation.
Ferranti
EIA
Pro-Electron
ZTX108CK 2N930
BC108C
ZTX213CK
2N3251
BC213C
Other components are listed below with the Manufacturer's
name.
Circuit ref
Type Number
Manufacturer
AC LM725
CD
National
AB
CA3046
RCA
AA,AD,AE
N5
741V
Signetics
AF
29
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