W30

Cement Coated W irewound Resistors W30 Series Welwyn Components • Values down to 10m ohms • Tolerance to 1% • Flameproof protection • Custom built to meet pulse requirements Electrical Data W31 Power rating at 25°C Power rating at 70°C Resistance range TCR (-55 to 155°C) Resistance tolerance Standard values Thermal impedance Ambient temperature range Limiting element voltage TCR °C/watt °C volts ppm/°C watts watts ohms ppm/°C % 3.0 2.5 0R01 to 10K See below 521 E24 series preferred 83 -55 to 155 100 0.01 ohms