Sensata Technologies Reed Relays SAR91203U

The SAR91203U is a UL-approved high-voltage reed relay in the S(UL) series, designed for high-voltage ATE applications with a compact 30mm footprint. It features rhodium contacts for low contact resistance, a 3kV isolation rating between contacts, and 5kV isolation between contacts and coil. It supports a maximum switching voltage of 20V DC or AC peak and a maximum switching current of 0.5A DC or AC peak, with a carry current of 1.5A. The relay operates at 5V DC coil voltage, with an operate time of 1.0ms and release time of 0.5ms when a diode is fitted. It has a contact resistance of 80mΩ max (30Ω typical), insulation resistance of 10¹⁰Ω min (10¹³Ω typical), and operates within a temperature range of -20°C to +70°C. The relay weighs 3.1g and meets UL standards for pollution degree 2.