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MIL-PRF-39005 Resistors, Fixed, Wirewound \(Accurate\), Nonestablished Reliability, Established Reliability, General Specification ForThis specification covers the general requirements for nonestablished reliability \(non-ER\), established reliability \(ER\), accurate, wire-wound, fixed resistors that have a maximum resistance tolerance of 1 percent and a high degree of stability with respect to time under specified environmental conditions. The resistors are capable for continuous full-load \(or voltage\) operation at any ambient temperature up to 125??C, and when derated, up to 145??C \(see 6.5\). They are not capable for application where the alternating current \(ac\) characteristics are of critical importance. ER resistors have life failure rates \(FR\) ranging from 1.0 percent to 0.001 percent per 1,000 hours \(see 1.2.1.5\). These FR are established at 60-percent confidence level on the basis of the life tests. The FR, identified by the appropriate symbol, is referred to operation at full rated voltage and temperature.

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MIL-PRF-39005G
TABLE III. Standard resistance values for the 10 decade to 100 decade.
Resistance tolerance
Q  T
F
Q  T
F
Q  T
F
Q  T
F
Q  T
F
Q  T
F
A  B
A  B
A  B
A  B
A  B
A  B
10.00
10.00
14.70
14.70
21.50
21.50
31.60
31.60
46.40
46.40
68.10
68.10
10.10
----
14.90
----
21.80
----
32.00
----
47.00
----
69.00
----
10.20
10.20
15.00
15.00
22.10
22.10
32.40
32.40
47.50
47.50
69.80
69.80
10.40
----
15.20
----
22.30
----
32.80
----
48.10
----
70.60
----
10.50
10.50
15.40
15.40
22.60
22.60
33.20
33.20
48.70
48.70
71.50
71.50
10.60
----
15.60
----
22.90
----
33.60
----
49.30
----
72.30
----
10.70
10.70
15.80
15.80
23.20
23.20
34.00
34.00
49.90
49.90
73.20
73.20
10.90
----
16.00
----
23.40
----
34.40
----
50.50
----
74.10
----
11.00
11.00
16.20
16.20
23.70
23.70
34.80
34.80
51.10
51.10
75.00
75.00
11.10
----
16.40
----
24.00
----
35.20
----
51.70
----
75.90
----
11.30
11.30
16.50
16.50
24.30
24.30
35.70
35.70
52.30
52.30
76.80
76.80
11.40
----
16.70
----
24.60
----
36.10
----
53.00
----
77.70
----
11.50
11.50
16.90
16.90
24.90
24.90
36.50
36.50
53.60
53.60
78.70
78.70
11.70
----
17.20
----
25.20
----
37.00
----
54.20
----
79.60
----
11.80
11.80
17.40
17.40
25.50
25.50
37.40
37.40
54.90
54.90
80.60
80.60
12.00
----
17.60
----
25.80
----
37.90
----
55.60
----
81.60
----
12.10
12.10
17.80
17.80
26.10
26.10
38.30
38.30
56.20
56.20
82.50
82.50
12.30
----
18.00
----
26.40
----
38.80
----
56.90
----
83.50
----
12.40
12.40
18.20
18.20
26.70
26.70
39.20
39.20
57.60
57.60
84.50
84.50
12.60
----
18.40
----
27.10
----
39.70
----
58.30
----
85.60
----
12.70
12.70
18.70
18.70
27.40
27.40
40.20
40.20
59.00
59.00
86.60
86.60
12.90
----
18.90
----
27.70
----
40.70
----
59.70
----
87.60
----
13.00
13.00
19.10
19.10
28.00
28.00
41.20
41.20
60.40
60.40
88.70
88.70
13.20
----
19.30
----
28.40
----
41.70
----
61.20
----
89.80
----
13.30
13.30
19.60
19.60
28.70
28.70
42.20
42.20
61.90
61.90
90.90
90.90
13.50
----
19.80
----
29.10
----
42.70
----
62.60
----
92.00
----
13.70
13.70
20.00
20.00
29.40
29.40
43.20
43.20
63.40
63.40
93.10
93.10
13.80
----
20.30
----
29.80
----
43.70
----
64.20
----
94.20
----
14.00
14.00
20.50
20.50
30.10
30.10
44.20
44.20
64.90
64.90
95.30
95.30
14.20
----
20.80
----
30.50
----
44.80
----
65.70
----
96.50
----
14.30
14.30
21.00
21.00
30.90
30.90
45.30
45.30
66.50
66.50
97.60
97.60
14.50
----
21.30
----
31.20
----
45.90
----
67.30
----
98.80
----
1.2.1.4 Initial resistance tolerance. The initial resistance tolerance is identified by a single letter in
accordance with table IV.
TABLE IV. Initial resistance tolerance and applicable minimum resistance values.
Initial resistance tolerance
Minimum resistance
Symbol
values (see 3.1)
(at 25°C ±2°C)
Ohms
Percent (±)
T
10.0
0.01
Q
10.0
0.02
A
10.0
0.05
B
10.0
0.10
F
0.10
1.00
3



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