LH1517

www.DataSheet4U.com High Voltage Solid State Relays General Information FEATURES 3750 Vrms or 5300 Vrms I/O isolation Current-limit protection built-in Linear ac/dc operation High-reliability monolithic receptor Extremely low leakage current (pA) High contact off-impedance (GW) Low power consumption (1 mW—12 mW) Very low switch offset (typically 0.1 mV) Logic compatible Clean, bounce-free switching Built-in 1 Form C break-before-make High surge capability Insensitive to dv/dt Surface mountable Compatible with UL1459 and FCC 68.302 UL recognized CSA certified BABT certificate of recognition to BS6301 DESCRIPTION Siemens Solid State Relays (SSRs) are miniature, optically-coupled relays with high-voltage MOSFET outputs. The relays are capable of switching ac or dc loads from as little as nanovolts to hundreds of volts. Likewise, the relays can switch currents in the range of nanoamps to hundreds of milliamps. The MOSFET switches are ideal for small signal switching and are primarily suited for dc or audio frequency applications. Siemens offers integrated current limiting on many of its relays. If load current through the relay exceeds the rated value, the relay clamps the current at a predefined value. If the excessive load current persists, the limiting circuit has a foldback feature to minimize relay power dissipation. The current-limit circuit has a multitude of uses. It can be used in telephony to clamp excessive currents emanating from lightning strikes and/ or power-main cro...