MIL-R-10509J
3.6 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.
In no case shall the rated dc or rms continuous working voltage is greater than the applicable maximum value (see 3.1 and table I).
3.7 DC resistance. When resistors are tested as specified in 4.7.2, the dc resistance shall be within the specified tolerance of the nominal resistance (see 1.2.1.4).
* 3.7.1 Resistance value deviations. All maximum deviations as specified in this section are to be considered absolute limits with the exception of the contact resistance adjustments.
3.8 Seal (applicable only to hermetically sealed resistors). When resistors are tested as specified in
4.7.3, there shall be no continuous visible stream of bubbles. For the purpose of this specification, a hermetically sealed resistor is one which shall be capable of passing the seal test specified in 4.7.3, or one which shall have a leakage rate of not more than 1.76 X 10-6 cubic centimeter per second, when determined by any other method having sensitivity equal to or better than the stated limit. Materials used
for this enclosure shall be ceramic, metal, or glass, or a combination thereof.
3.9 Thermal shock. 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 ±(0.5 percent + 0.05 ohm) for characteristic D, and ±(0.25 percent + 0.05 ohm) for characteristic C, characteristic E, characteristic F, and characteristic G.
3.10 Low temperature operation. When resistors are tested as specified in 4.7.5, there shall be no evidence of mechanical damage. The change in resistance between the initial and the final measurements at 25°C ±5°C, shall not exceed ±(0.5 percent + 0.05 ohm) for characteristic D, and ±(0.25 percent + 0.05 ohm) for characteristic C, characteristic E, characteristic F, and characteristic G.
3.11 Short time overload. When resistors are tested as specified in 4.7.6, there shall be no evidence of arcing, burning, or charring. The change in resistance shall not exceed ±(0.5 percent + 0.05 ohm) for characteristic D, and ±(0.25 percent + 0.05 ohm) for characteristic C, characteristic E, characteristic F,
and characteristic G.
3.12 Terminal strength. When resistors are tested as specified in 4.7.7, there shall be no evidence of breaking or loosening of terminals from form, or other mechanical damage. The change in resistance shall not exceed ±(0.2 percent + 0.05 ohm). Loosening of terminals is indicated by instantaneous instability of resistance during the resistance measurement.
3.13 Dielectric withstanding voltage. When resistors are tested as specified in 4.7.8, there shall be no evidence of flashover, mechanical damage, arcing, or insulation breakdown. The change in resistance shall not exceed ±(0.5 percent + 0.05 ohm) for characteristic D, and ±(0.25 percent + 0.05 ohm) for characteristic C, characteristic E, characteristic F, and characteristic G.
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