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

3.5 Voltage rating. Resistors shall have a rated direct current (dc) continuous working voltage, or an

approximate sine wave root mean square (rms) continuous working voltage at commercial line frequency

and waveform corresponding to the power rating, as determined from the following formula:

E = PR

Where: E = rated dc or rms continuous working voltage.

P = power rating (see 3.1).

R = nominal resistance.

3.6 DC resistance. When resistors are tested as specified in 4.7.2, the dc resistance shall be within 1

percent of the nominal resistance (see 1.2.1.3 and 3.1).

3.7 Solderability (as applicable) (see 3.1). When resistors are tested as specified in 4.7.3, the flat

portion of the terminal shall be considered as the solderable area, and must be completely solderable.

3.8 Terminal strength. When resistors are tested as specified in 4.7.4, there shall be no evidence of

mechanical damage. The change in resistance shall not exceed �(0.2 percent +0.05 ohm).

3.9 Resistance temperature characteristic. When resistors are tested as specified in 4.7.5, the

resistance temperature characteristic shall not exceed 30 ppm/�C for resistance values of 20 ohms and

higher, 50 ppm/�C for resistance values from 1 ohm to 19.6 ohms, �100 ppm/�C for resistance values

from 0.1 ohm to 0.976 ohm, and �200 ppm/�C for resistance values from 0.05 ohm to 0.09 ohm.

3.10 Dielectric withstanding voltage. When resistors are tested as specified in 4.7.6, resistors shall not

flashover, show any evidence of damage, arcing, or insulation breakdown, nor a change in resistance in

excess of �(0.2 percent +0.05 ohm) as applicable.

3.11 Insulation resistance. When resistors are tested as specified 4.7.7, the insulation resistance shall

not be less than 10,000 megohms.

3.12 Low temperature operation. When resistors are tested as specified in 4.7.8, the change in

resistance shall not exceed �(0.5 percent +0.05 ohm) and there shall be no any evidence of mechanical

damage which will result in degradation of performance.

3.13 Short time overload. When resistors are tested as specified in 4.7.9, the change in resistance

shall not exceed �(0.5 percent +0.05 ohm), and there shall be no evidence of arcing, burning, or charring.

3.14 Moisture resistance. When resistors are tested as specified in 4.7.10, the change in resistance

shall not exceed �(1 percent +0.05 ohm). The insulation resistance shall not be less than 1,000

megohms. There shall be no evidence of breaking, cracking, loosening of terminals, or corrosion.

3.15 Life. When resistors are tested as specified in 4.7.11, the resistors shall dissipate not less than

the rated power input (see 3.1) without exceeding a change in resistance in excess of �(1 percent +0.05

ohm) between the initial measurement and any succeeding measurement. The insulation resistance shall

be not less than 10,000 megohms, and there shall be no evidence of mechanical damage.