SQ Series Cement-Housed High-Power Resistors

TE Connectivity's (TE) flexible range of power wirewound resistors either have wire or power oxide film elements. The SQ series resistors are wound or deposited on a fine non-alkali ceramic core and then embodied in a ceramic case and sealed with an inorganic silica filler. This design provides a resistor with high insulation resistance, low surface temperature, excellent TCR, and entirely fireproof construction. These resistors are ideally suited to a range of areas where low cost and efficient thermal performance are important design criteria. Metal-film cores adjusted by laser spiral are used where the resistor value is above that which is suited to wire. Similar performance is obtained, although short-time overload is slightly derated.