Sensata Technologies Reed Relays DBT72405U

The DBT72405U is a normally closed, high-voltage reed relay with 5 kV isolation between contacts, designed for applications requiring high reliability such as cardiac defibrillators and high-voltage power supplies. It features tungsten contacts capable of switching up to 3500 V DC/AC peak and a 24 V DC coil with a resistance of 925 Ω. The relay has a maximum carry current of 3 A and a contact resistance of 250 mΩ (typical 100 mΩ). It operates within a temperature range of -20 to +70 °C, with a coil-to-screen isolation voltage of 17 kV and an insulation resistance exceeding 10¹⁰ Ω. The unit is PCB-mounted with flying leads for high-voltage connections and is UL approved for pollution degree 2 environments. Its physical dimensions include a 50.8 mm ±1 mm mounting center distance with two M4 clearance holes of 4.8 mm to 5.1 mm diameter.