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

3.18 Dielectric withstanding voltage. When resistors are tested as specified in 4.8.12, there shall be no

evidence of mechanical damage, arcing, or breakdown. The change in resistance shall not exceed

�(0.25 percent +0.05 ohm for 100 PPM and 350 PPM) The leakage current shall not exceed 1

milliampere at any time during the test.

3.19 Insulation resistance. When resistors are tested as specified in 4.8.13, the insulation resistance

shall not be less than 1,000 megohms.

3.20 Resistance to soldering heat. When resistors are tested as specified in 4.8.14, there shall be no

evidence of mechanical damage and the change in resistance shall not exceed �(0.25 percent +0.05 ohm

for 100 PPM) or �(0.5 percent +0.05 ohm for 350 PPM).

3.21 Moisture resistance. When resistors are tested as specified in 4.8.15, there shall be no evidence

of mechanical damage and the change in resistance between the initial and final measurements shall not

exceed �(1.0 percent +0.05 ohm for 100 PPM) or �(5.0 percent +0.05 ohm for 350 PPM). The dielectric

withstanding voltage shall be as specified in 3.18. The insulation resistance shall be not less than 100

megohms

3.22 Shock (specified pulse). When resistors are tested as specified in 4.8.16, there shall be no

evidence of mechanical or electrical damage and the change in resistance shall not exceed �(0.5 percent

+0.05 ohm) following the vibration test of 3.23. There shall be no electrical discontinuity of 0.1

millisecond or greater duration during the test.

3.23 Vibration, high frequency. When resistors are tested as specified in 4.8.17, there shall be no

evidence of mechanical or electrical damage and the change in resistance shall not exceed �(0.5 percent

+0.05 ohm) for 3.22 and 3.23 combined. There shall be no electrical discontinuity of 0.1 millisecond or

greater duration during the test.

3.24 Life.

3.24.1 Qualification. When resistors are tested as specified in 4.8.18, there shall be no evidence of

mechanical damage to the resistance element, coating, or enclosure. The change in resistance between

the initial measurement and any of the succeeding measurements up to and including 2,000 hours shall

not exceed �2 percent.

3.24.2 FR level determination (extended FR test). When resistors are tested as specified in 4.8.18, the

change in resistance between the initial measurement and any of the succeeding measurements up to

and including 10,000 hours shall not exceed �(4.0 percent +0.05 ohm). This single failure criterion shall

be applicable to all measurements during the life test for purposes of determining FR level qualification

3.25 High temperature exposure. When tested as specified in 4.8.19, there shall be no evidence of

mechanical damage and the change in resistance shall not exceed �(2.0 percent +0.05 ohm for 100

PPM) or �(5.0 percent +0.05 ohm for 350 PPM).