Resistor Types


Resistor types

Resistor Type Ohm range Min Ohm Range Max Temp-co Min PPM Temp-co Max PPM Parasitics
Carbon 1 22M 400 1300 low
Carbon Film (CF) 10 10M 500 800 Mid
Metal Film (MF) 10 1M 25 1000 mid
Metal Element .0002 1 75 110 ??
Metal Foil .0001 150k 0.2 150 ??
Metal Oxide(MO) 1 30M 100 200 ??
Thick Film .001 100G 80 800 Mid
Thin Film .001 10M 5 500 Mid
Wire Wound .005 50K 20 600 High
Diffused ? ? ? ?

Case to wattage

Case size mils Case Size metric Mill Wattage Wattage Relative price
01005 0402 0.031
0201 0603 0.05
0402 1005 0.0625 0.167 3.6
0603 1608 0.0625 0.1 2.10
0805 2012 0.100 0.125 2.50
1206* 3216 0.125 0.250 3.90
1210 3225 0.250 0.333
2010 5025 0.500 0.750
2512 6432 1.00
2045 50??? 1.00 2

Note - Resistors are normally de-rated by 50% for a good life span. The area of these chip resistors is the same no matter what wattage they are rated - the surface may be a different material, but the insides are still hotter if the manufacturer rates them higher. Conservative design would tell us to use the lower values. ®

Normal 1% (E96 series) values

1.00
1.02
1.05
1.07
1.10
1.13
1.15
1.18
1.21
1.24
1.27
1.30
1.33
1.37
1.40
1.43
1.47
1.50
1.54
1,58
1.62
1.65
1.69
1.74
1.78
1.82
1.87
1.91
1.96
2.00
2.05
2.10
2.16
2.21
2.36
2.32
2.37
2.43
2.49
2.55
2.61
2.67
2.74
2.80
2.87
2.94
3.01
3.09
3.16
3.24
3.32
3.40
3.48
3.57
3.65
3.74
3.83
3.92
4.02
4.12
4.22
4.32
4.42
4.53
4.64
4.75
4.87
4.91
5.11
5.23
5.36
5.49
5.62
5.76
5.90
6.04
6.19
6.34
6.49
6.65
6,81
6.98
7.15
7.32
7.50
7.68
7.87
8.06
8.25
8.45
8.66
8.87
9.09
9.31
9.59
9.76


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This information may have errors; It is not permissible to be read by anyone who has ever met a lawyer.
Use is confined to Engineers with more than 370 course hours of electronic engineering for theoretical studies.
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