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

4.8.12.2 Barometric pressure. Resistors shall be tested in accordance with method 105 of

MIL-STD-202. The following details and exceptions shall apply:

a. Method of mounting: As specified in 4.8.12.1a.

b. Initial measurement: DC resistance shall be measured as specified in 4.8.3.

Test condition: D.

d. Test voltages during subjection to reduced pressure: See 3.1.

e. Nature of potential: As specified in 4.8.12.1d.

Duration of application: 60 seconds.

g. Rate of applicable: 100 volts per second.

h. Points of application of test voltage: As specified in 4.8.12.1g.

Measurement after test: DC resistance shall be measured as specified in 4.8.3.

Examinations after test: As specified in 4.8.12.1i.

4.8.13 Insulation resistance (see 3.19). Resistors shall be tested in accordance with method 302 of

MIL-STD-202. The following details and exceptions shall apply:

a. Special preparation: As specified in 4.8.15a.

b. Test condition: A or B, whichever is more practicable for styles RLR07, RLR20, and RLR32. For

style RLR05, test condition A (100 volts) shall be used.

Points of measurement: Between the resistor terminals connected together and the mounting strap.

4.8.14 Resistance to soldering heat (see 3.20). Resistors shall be tested in accordance with

method 210 of MIL-STD-202. The following details shall apply:

a. Measurement before test: DC resistance shall be measured as specified in 4.8.3.

b. Special preparation of the specimen: Both leads shall be dipped in type A flux in accordance with

J-STD-004, and then dipped into solder, both for 5 seconds �.5 second. The bath shall be

maintained at 260�C �5�C. The parts shall be immersed to within .075 inch �.025 inch of the body.

Test condition: Test condition C, a board with a maximum area or 9 square inches shall be used

and the leads shall not be cut.

d. Measurement after test: After completion of the cleaning process and following a minimum 3-

hour cooling period, the dc resistance shall be measured as specified in 4.8.3.

e. Examination after test: Resistors shall be examined for evidence of mechanical damage.