A-A-52176
2.4 Function-conformity tolerance characteristic. The function-conformity tolerance characteristic is identified by a single letter in accordance with table IV.
2.5 Output-smoothness characteristic. The output-smoothness characteristic is identified by a single letter in accordance with table V.
2.6 Resistance. The nominal total resistance value expressed in ohms is identified by a three-digit number. The first two digits represent significant figures and the last digit specifies the number of zeros to follow. When fractional values of an ohm, or values of less than 10 ohms, are required, the letter “R” shall be substituted for one of the significant digits to represent the decimal point. When the letter “R” is used, succeeding digits of the group represent significant figures, as shown in the following example:
3R0 signifies 3.0 ohms
102 signifies 1000 ohms
2.7 Design and construction. The resistor shall be of the design, construction, and physical dimensions specified on figure 1.
3. Salient characteristics.
3.0 Maximum continuous working voltage. The maximum continuous working voltage for these resistors shall be 250 volts.
3.1 Power rating. The power rating for these resistors shall be 1.25 watts.
3.2 Resistance-temperature characteristic and maximum ambient temperature. The ambient temperature with rated load is 70°C and the ambient temperature with zero load is 125°C. The resistance-temperature characteristic shall be in accordance with table IX.
3.3 Plastic. Plastic laminates containing a cotton-fabric base, or plastic-molding compounds containing cotton or wood-flour filler shall not be used. Where not machined, plastic material shall have the original, smooth, or polished surfaces. Surfaces that have been saved, cut, punched, or otherwise machined shall be as smooth as practicable.
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