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MIL-PRF-39017 Resistors, Fixed, Film \(Insulated\), Nonestablished Reliability, And Established Reliability, General Specification ForThis specification covers the general requirements for nonestablished reliability \(non-ER\) and established reliability \(ER\), insulated, film, fixed resistors. These resistors are capable of full load operation at an ambient temperature of 70 Degrees C and have a resistance temperature characteristic of 100 parts per million \(PPM\) and 350 PPM per degree Celsius \(PPM/Degrees C\). The ER resistors have life failure rate \(FR\) levels ranging from 1.0 percent to 0.001 percent per 1,000 hours \(see 1.2.1.4\). These FR levels are established at a 60 percent confidence level on the basis of life tests. Designers are CAUTIONED on using these resistors in high power pulse applications \(see 6.13.2\).

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MIL-PRF-39017G
6.6 Derating. The intention of this specification is to cover resistors capable of full-load operation at
any ambient temperature up to 70°C. However, if it is desired to operate these resistors at ambient
temperatures greater than 70°C, the resistors should be derated in accordance with figure 2. The slope
of the derating curve is estimated and is not completely substantiated by test data; therefore it should be
used only as an application guide.
6.7 Shelf life. Resistors are not expected to change in resistance more than 0.2 percent (average) per
year under normal storage conditions (25°C ±10°C with a relative humidity not exceeding 90 percent).
6.8 Flammability. It should be note that this specification contains no requirements concerning the
flammability of the material used in the construction of the resistor. Users should take this into
consideration when a particular application involves this requirement.
6.9 Supersession data. The style of this specification supersedes other styles in accordance with
TABLE XVII. Styles.
Styles in
Supersedes styles
Supersedes styles
Supersedes styles
(RL07-TX) 22684/5 (USAF)
(RL20-TX) 22684/6 (USAF)
(RL32-TX) 22684/7 (USAF)
1/ FR level "M" is the equivalent level for supersession of the referenced MIL-PRF-22684 (USAF) style.
*
6.9.1 Supersession data. Resistor style RL42-TX in accordance with MIL-PRF-22684/8 and DSCC
drawing 97004 are substitute for resistor style RLR42 and RLR62 in MIL-R-39017/4 and
MIL-PRF-39017/6, which have been canceled.
6.9.2 Resistance. Resistors specified with a 2 percent resistance tolerance by this specification
supersede and are interchangeable with resistors of the same resistance value, tolerance, style, and
performance characteristics specified in MIL-R-39017B as listed in table XVIII.
TABLE XVIII. Designation of resistance values.
Resistance designations
Resistance
10.0 to 91.0
100 to 910 inclusive
10R0 to 91R0 inclusive
100 to  910
101 to 911 inclusive
1000 to 9100 inclusive
1,000 to  9,100
102 to 912 inclusive
1001 to 9101 inclusive
10,000 to  91,000
103 to 913 inclusive
1002 to 9102 inclusive
0.1 megohm to  .91 megohm
104 to 914 inclusive
1003 to 9103 inclusive
1.0 megohm to 9.1 megohms
105 to 915 inclusive
1004 to 9104 inclusive
6.9.3 Resistance tolerance. Resistance tolerance "G" (2.0 percent) supersedes and is a substitute for
resistance tolerance "J" (5.0 percent).
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