WP4S-680RFA1

Compact Flameproof Power Wirewound Resistors WP-S Series Welwyn Components • • • • • Small size for power rating Enhanced pulse handling capability Flameproof protection SMD Z-form available RoHS compliant with Pb-free terminations Electrical Data WP1S Power rating at 25°C 5s overload rating at 25ºC Short pulse performance Resistance range Limiting element voltage TCR Isolation Voltage Resistance Tolerance Standard Values Thermal Impedance Ambient temperature range °C/watt °C 140 110 90 ohms volts ppm/°C volts % 250