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LH1500 Dataheets PDF



Part Number LH1500
Manufacturers Siemens
Logo Siemens
Description High Voltage Solid State Relay
Datasheet LH1500 DatasheetLH1500 Datasheet (PDF)

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 .

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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 crosses or in instrumentation and industrial application to squelch transients from reactive loads. The current-limit circuit also provides short-circuit protection in power-feed applications. The SSRs feature a monolithic output die that minimizes wire bonds and permits easy integration of high-performance circuits such as current limiting in normally-open switches. The output die contains all the necessary circuitry to perform a relay function, including the photodiode receptor array, turn-on and turn-off control circuitry, and the MOSFET switches. The optically-coupled input is controlled by a highly efficient GaAlAs infrared LED. Siemens SSRs are available in a 6- or 8-pin through-hole DIP or in gullwing surface-mount packages. Some parts are also offered in 8- or 18-pin small-outline packages (SOPs). The SOPs are size and height compatible with PCMCIA Type 2 cards. A 0.4 mm distance through insulation spacing is also available on “H” suffix coded parts. Refer to the Parts Coding section for a more in-depth description of these parts. • • • • • • • • • • • • • • • • • • BENEFITS • Long life • Maintenance free • Current-limit SSRs can sustain repeated faults without damage Minimizes drive circuitry • • Noiseless • Immune to shock • Immune to environmental hazards such as salt, dirt, and humidity • No arcing • No mounting restrictions • Preapproved for DAA applications • High reliability • Easily configured in series or in parallel for increased voltage or current Siemens Micr.


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