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MIL-PRF-26 Resistors, Fixed, Wire Wound \(Power Type\) General Specification ForThis specification covers the general requirements for power type, wirewound, fixed resistors for use in electrical, communications, and associated equipment. Included are general purpose styles of 5 percent initial resistance tolerance, with power ratings ranging from 3 watts to 240 watts at 25 Degrees C, derated to 0 power at 350 Degrees C \(characteristics N and V\) and precision axial lead types of .1\(B\) percent, .5 \(D\)percent, and 1 \(F\) percent initial resistance tolerances with power ratings ranging from 1 watt to 10 watts at 25 Degrees C, derated to 0 power at 250 degrees C \(characteristic U\).

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MIL-PRF-26H

TABLE I. Standard 10 to 100 decade

Tolerance (+%)

0.1 (B)

1 (F)

0.5 (D)

1.00

1.62

2.61

4.22

6.81

1.00

1.62

2.61

4.22

6.81

1.01

1.64

2.64

4.27

6.90

1.02

1.65

2.67

4.32

6.98

1.02

1.65

2.67

4.32

6.98

1.04

1.67

2.71

4.37

7.06

1.05

1.69

2.74

4.42

7.15

1.05

1.69

2.74

4.42

7.15

1.06

1.72

2.77

4.48

7.23

1.07

1.74

2.80

4.53

7.32

1.07

1.74

2.80

4.53

7.32

1.09

1.76

2.84

4.59

7.41

1.10

1.78

2.87

4.64

7.50

1.10

1.78

2.87

4.64

7.50

1.11

1.80

2.91

4.70

7.59

1.13

1.82

2.94

4.75

7.68

1.13

1.82

2.94

4.75

7.68

1.14

1.84

2.98

4.81

7.77

1.15

1.87

3.01

4.87

7.87

1.15

1.87

3.01

4.87

7.87

1.17

1.89

3.05

4.93

7.96

1.18

1.91

3.09

4.99

8.06

1.18

1.91

3.09

4.99

8.06

1.20

1.93

3.12

5.05

8.16

1.21

1.96

3.16

5.11

8.25

1.21

1.96

3.16

5.11

8.25

1.23

1.98

3.20

5.17

8.35

1.24

2.00

3.24

5.23

8.45

1.24

2.00

3.24

5.23

8.45

1.26

2.03

3.28

5.30

8.56

1.27

2.05

3.32

5.36

8.66

1.27

2.05

3.32

5.36

8.66

1.29

2.08

3.36

5.42

8.76

1.30

2.10

3.40

5.49

8.87

1.30

2.10

3.40

5.49

8.87

1.32

2.13

3.44

5.56

8.98

1.33

2.15

3.48

5.62

9.09

1.33

2.15

3.48

5.62

9.09

1.35

2.18

3.52

5.69

9.20

1.37

2.21

3.57

5.76

9.31

1.37

2.21

3.57

5.76

9.31

1.38

2.23

3.61

5.83

9.42

1.40

2.26

3.65

5.90

9.53

1.40

2.26

3.65

5.90

9.53

1.42

2.29

3.70

5.97

9.65

1.43

2.32

3.74

6.04

9.76

1.43

2.32

3.74

6.04

9.76

1.45

2.34

3.79

6.12

9.88

1.47

2.37

3.83

6.19

1.47

2.37

3.83

6.19

1.49

2.40

3.88

6.26

1.50

2.43

3.92

6.34

1.50

2.43

3.92

6.34

1.52

2.46

3.97

6.42

1.54

2.49

4.02

6.49

1.54

2.49

4.02

6.49

1.56

2.52

4.07

6.57

1.58

2.55

4.12

6.65

1.58

2.55

4.12

6.65

1.60

2.58

4.17

6.73