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

1.2.1.2 Terminals. The terminals are identified by a single letter in accordance with table II.

TABLE II. Terminals.

Symbol

Type of terminal

C 1/

Solderable/weldable (type C41,

C32, or C52 of MIL-STD-1276)

1/ The maximum thickness of 200 microinches

is not applicable.

1.2.1.3 Resistance tolerance. The resistance tolerance is identified by a single letter in accordance

TABLE III. Resistance tolerance. 1/

Symbol

Resistance

tolerance

Percent (�)

1/ The resistance tolerance available is

characteristic dependent (see 3.1).

1.2.1.4 Product level designator. The product level designator as shown in table IV is signified by a

single letter (M, P, R, S or C), which identifies the product level for which the resistor is qualified.

TABLE IV. Product level designator.

Product level

designator

Non-ER

1/ 1.0

1/ 0.1

1/ 0.01

1/ 0.001

1/ FR in percent/1,000 hours

1.2.1.5 Resistance. The nominal resistance expressed in ohms is identified by a resistance

designation utilizing four digits. Minimum and maximum resistance values are as specified (see 3.1).