The main technical indicators of resistors
Table 2
Power rating of resistors
|
name
|
Rated power (W)
|
|||||
|
Solid Core Resistors
|
0.25
|
0.5
|
1
|
2
|
5
|
-
|
|
Wirewound Resistors
|
0.5
25
|
1
35
|
2
50
|
6
75
|
10
100
|
15
150
|
|
Thin Film Resistors
|
0.025
2
|
0.05
5
|
0.125
10
|
0.25
25
|
0.5
50
|
1
100
|
Table 3
Nominal value series
|
Nominal value series
|
Accuracy
|
Resistor (W), potentiometer (W), capacitor nominal value (PF)
|
|||||||
|
E24
|
±5%
|
1.0
2.2
4.7
|
1.1
2.4
5.1
|
1.2
2.7
5.6
|
1.3
3.0
6.2
|
1.5
3.3
6.8
|
1.6
3.6
7.5
|
1.8
3.9
8.2
|
2.0
4.3
9.1
|
|
E12
|
±10%
|
1.0
3.3
|
1.2
3.9
|
1.5
4.7
|
1.8
5.6
|
2.2
6.8
|
2.7
8.2
|
-
|
-
|
|
E6
|
±20%
|
1.0
|
1.5
|
2.2
|
3.3
|
4.7
|
6.8
|
8.2
|
-
|
n, where n is a positive or negative integer.
Table 4
Accuracy level of resistors
|
Allowable error (%)
|
±0.001
|
±0.002
|
±0.005
|
±0.01
|
±0.02
|
±0.05
|
±0.1
|
|
|
Level symbol
|
E
|
X
|
Y
|
H
|
U
|
W
|
B
|
|
|
|
±0.2
|
±0.5
|
±1
|
±2
|
±5
|
±10
|
±20
|
|
|
|
C
|
D
|
F
|
G
|
J (I)
|
K(II)
|
M(III)
|
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