Degrees C depending upon the resistance value. They are not capable for application when the alternating current \(ac\) characteristics are of critical importance; however, provisions have been made to minimize the inductance.

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MIL-PRF-18546G

4.3 Inspection conditions and precautions.

4.3.1 Conditions. Unless otherwise specified herein, all inspections shall be performed in accordance

4.3.2 Precautions. Adequate precautions shall be taken during tests to prevent condensation or

moisture on resistors, except during the moisture resistance tests.

4.4 Qualification inspection. Qualification inspection shall be performed at a laboratory acceptable to

the Government (see 6.3) on sample units produced with equipment and procedures normally used in

production.

4.4.1 Sample. The number of sample units comprising a sample of resistors to be submitted for

qualification inspection shall be as specified in the appendix to this specification. The sample shall be

taken from a production run and shall be produced with equipment and procedures normally used in

production.

4.4.2 Test routine. Sample units shall be subjected to the qualification inspection specified in table III,

in the order shown. All sample units except those listed under group IA shall be subjected to the

inspection of group I. The 18 sample units shall then be divided equally into 3 groups of 6 sample units

each, for groups II to IV inclusive, and subjected to the inspection for their particular group. The uncoated

or enclosed sample units shall be subjected to the inspection of group V.

4.4.3 Failures. Failures in excess of those allowed in table III shall be cause for refusal to grant

qualification.

4.5 Retention of qualification. Every 12 months, the manufacturer shall verify the retention of

qualification to the qualifying activity. In addition, the manufacturer shall immediately notify the qualifying

activity whenever the group B inspection results indicate failure of the qualified product to meet the

requirements of this specification. Verification shall be based on meeting the following requirements:

a. The manufacturer has not modified the design of the item.

b. The specification requirements for the item have not been amended so far as to affect the

character of the item.

c. Lot rejection for group A inspection does not exceed the group A sampling.

d. The requirements for group B inspection are met.

When group B requirements were not met and the manufacturer has taken corrective action satisfactory

to the Government, group B inspection retesting shall be instituted.

4.5.1 Alternate inspection. For the purpose of retention of qualification and conformance inspection

(see 4.5 and 4.6) the test results on identical items covered by MIL-PRF-39009 may be used.