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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
4.6.3.2.2 Manufacturer's production inspection. If the manufacturer performs tests equal to or more
stringent than those specified in group A, subgroup 1, as the final step of this production process, group
A, subgroup 1 inspection may be waived and the data resulting from the manufacturer's production tests
may be used instead. Authority to waive the subgroup 1 inspection shall be granted by the qualifying
activity only. The following criteria must be complied with:
a. Production tests are identical to or more stringent than those specified for subgroup 1 tests.
b. One hundred percent of the product supplied to these tests.
c.
Failure criteria are identical to, or more stringent than, those specified for subgroup 1 tests.
d. Lot rejection criteria are identical to, or more stringent than, those specified for subgroup 1 tests.
e. Once approved, future changes require approval from the qualifying activity.
4.6.3.2.3 Subgroup 2 tests. The subgroup 2 tests shall be performed on an inspection lot basis for ER
parts. A random sample of resistors shall be selected in accordance with table XI. In the event of one or
more failures, the lot is rejected. The rejected lot may be rescreened and the defects removed and
resubmitted to the table XI sample plan. If one or more defects are found in this second sample, the lot is
rejected and shall not be supplied to this specification. (NOTE: This corrective action applies to the
original quality defect found. If another defect type is found in the second sample, a rescreen for that
defect is also permitted).
TABLE XI. Sampling plans for PPM categories.
Lot size
Sample size
Sample size
PPM
subgroup 2
100 percent
100 percent
1-
13
13
100 percent
14 -
125
13
125
126 -
150
20
125
151 -
280
29
125
281 -
500
34
125
501 -  1,200
42
125
1,201 -  3,200
50
125
3,201 - 10,000
60
294
10,001 - 35,000
74
294
35,001 - 150,000
90
345
150,001 - 500,000
102
435
500,001 and over
20



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