2-1623788-9

CEMENT HOUSED HIGH POWER RESISTOR TYPE SQ SERIES INTRODUCTION TE Connectivity (TE)’s flexible range of power wire wound resistors either have wire or power oxide film elements. The SQ series resistors are wound or deposited on a fine non-alkali ceramic core 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 Temperature co-efficient of resistance (TCR), and entirely flameproof construction. These resistors are excellently 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 suited to wire. Similar performance is obtained although short time overload is slightly derated. FEATURES • Choice of styles • Bracketed types available • Operating temperature -55°C to +155°C • Wide value range • Stable TCR 300PPM/°C • Custom designs welcome • Inorganic flame resistant construction • Certain models are now AEC-Q200 qualified • Pulse withstand model is now available ELECTRICAL CHARACTERISTICS Characteristic Short time overload Rated load Voltage withstand Insulation resistance Max. overload voltage Specification Wire Wound Power Film 10 times rated power for 5 seconds 5 times rated power for 5 seconds Test Method ± 2% Rated power for 30 minutes ± 1% 1000V AC 1 minute SQMB10W - 3000v 2 seconds No change 500V megger 1000 Meg 2 times max. working voltage Operating temperature range -55°C ~ 155°C Resistance temp. coefficient ±300PPM