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SME MODEL
Home » Products » CEMENTED AND ENAMELLED WIRE WOUND RESISTORS » SME MODEL
GENERAL CHARACTERISTICS
These resistors are easy to assemble and were designed for limited occupancy of space for mounting in groups.
Upon request, they may be supplied with accessories suitable for fixing and grouping.
The external protection is ensured by a total vitreous enamel coating.
The resistive element consists of wire in Ni-Cr alloy or constantan, twisted on an extremely pure, flat ceramic support.
ELECTRICAL CHARACTERISTICS
MAXIMUM LOAD LIMIT
ELECTRICAL CHARACTERISTICS
- Standard tolerance ± 10%
- Temperature coefficient ≤ 100 ppm/°C
- Insulation resistance > 100 Mohm (500 Vdc)
- Max working temperature 350°C
MAXIMUM LOAD LIMIT
The nominal power Pn in the table refers to the resistor placed horizontally in the open air with natural circulation with an ambient temperature of 25°C.
With forced ventilation, the dissipating nominal power from the resistor increases based on the speed of the air.
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