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

1.2.1.5.1 Four digit resistance designation. The four digit resistance designation is applicable to

resistance tolerances "F" (1.0 percent), "G" (2.0 percent), "J" (5.0 percent), and "K" (10.0 percent). The

nominal resistance identified by four digits; the first three digits represent significant figures and the last

digit specifies the number of zeros to follow. When the value of resistance is less 100 ohms, or when

fractional values of an ohm are required, the letter "R" is substituted for of the significant digits to

represent the decimal point. When the letter "R" is used, succeeding digits of the group represent

significant figures. The resistance value designations are shown in table V. Standard values for every

decade follows the sequence demonstrated for 10 decade to 100 decade in table VI. Resistance values

not listed in table VI for the appropriate resistance tolerance are considered as not conforming to the

specification. Although resistance tolerances "G", "J", and "K" normally require less than three significant

figures to adequately describe the true resistance value, for the purpose of this specification, the nominal

value is three significant figures followed by the fourth digit to signify the number of zeros to follow.

TABLE V. Designation of resistance values for resistance-tolerances of

1.0, 2.0, 5.0, and 10.0 percent.

Designation

Resistance ohms

1.00 to

9.76 inclusive

1R00 to 9R76 inclusive

10.0 to

97.6 inclusive

10R0 to 97R6 inclusive

100 to

976 inclusive

1000 to 9760 inclusive

1,000 to

9,760 inclusive

1001 to 9761 inclusive

10,000 to

97,600 inclusive

1002 to 9762 inclusive

100,000 to

976,000 inclusive

1003 to 9763 inclusive

1,000,000 to 9,760,000 inclusive

1004 to 9764 inclusive

10,000,000 to 97,600,000 inclusive

1005 to 9765 inclusive