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

3.16 Shock, (specified pulse). When resistors are tested as specified in 4.7.12, there shall be no

electrical discontinuity during the test, the change in resistance shall not exceed �(0.2 percent +0.05

ohm), and there shall be no evidence of mechanical damage. Resistors shall meet the dielectric

withstanding voltage requirements specified in 3.10.

3.17 Vibration, high frequency. When resistors are tested as specified in 4.7.13, there shall be no

electrical discontinuity during the test, the change in resistance shall not exceed �(0.2 percent +0.05

ohm), and there shall be no evidence of mechanical damage. Resistors shall meet the dielectric

withstanding voltage requirements specified in 3.10.

3.18 Marking. Resistors shall be marked with the type designation and the manufacturer's name,

trademark, or code symbol and shall be in accordance with MIL-STD-1285. All marking may appear on

one flat side at the manufacturer's option; however, all marking must be visible after mounting. There

shall be no space between the symbols which comprise the type designation. Marking shall remain

legible at the end of all tests.

3.18.1 Beryllium oxide (BeO). Manufacturers which use beryllium oxide in their construction shall mark

each resistor body and resistor package with the symbol "BeO".

3.19 Soldering. Where soldering is employed, only noncorrosive fluxes shall be used unless it can be

shown that corrosive elements have been satisfactorily removed after soldering. Solder shall not be used

for obtaining mechanical strength. Electrical connections shall be mechanically secure before soldering

and electrically continuous after soldering. Except for solder used to coat the terminals, the solder used

shall in no case start to melt at a temperature less than +300�C.

3.20 Recycling, recovered, or environmentally preferable materials. Recycled, recovered, or

environmentally preferable materials should be used to the maximum extent possible that the material

meets or exceeds the operational and maintenance requirements, and promotes economically

advantageous life cycle costs.

3.21 Workmanship. Resistors shall be processed in such a manner as to be uniform in quality and

shall be free from holes, fissures, chip, corrosion, and malformation; the terminals shall be unbroken and

not crushed or nicked; and the resistors shall be free from other defects that will affect life, serviceability,

or appearance.

4. VERIFICATION

4.1 Classification of inspection. The inspection requirements specified here are classified as follows:

a. Qualification inspection (see 4.4).

b. Conformance inspection (see 4.6).

4.2 Test equipment and inspection facilities. The supplier shall establish and maintain a calibration

system in accordance with ANSI/NCSL Z540-1, ISO 10012-1, or equivalent system as approved by the

qualifying activity.