LH1540

Emitter
Reverse Voltage................................................................... 6.0 V
Continuous Forward Current .............................................60 mA
Peak Forward Current (1ms) ..................................................1 A
Power Dissipation ...........................................................100 mW
Derate Linearly from 25°C .......................................1.3 mW/°C
Detector
Output Breakdown Voltage.................................................350 V
Continous Load Current ..................................................150 mA
Total Power Dissipation...................................................400 mW
Derate Linearly from 25°C ....................................See Figure  3
Package
Isolation Test Voltage ............................................3750 VAC_RMS
Isolation Resistance
  V_IO=500 V, T_A=25°C....................................................1012
  V_IO=500 V, T_A=100°C..................................................1011
Power Dissipation ...........................................................500 mW
Derate Linearly from 25°C ........................................2.5 mW/°C
Storage Temperature Range ..............................40 to +150°C
Operating Temperature Range..............................40 to +85°C
Junction Temperature ...................................................... 100°C
Soldering Temperature, 2 mm from case, 10 sec. ............ 260°C

The LH1540 is a single pole single throw (SPST), normally open (NO), solid state relay. The relay can control AC or DC loads currents up to 100 mA, with a supply voltage up to 350 V. The device is packaged in a six pin 0.3 inch dual-in line package.This package offers an insulation dielectric withstand of 3750 VAC_RMS.

The LH1540 consists of a AlGaAs LED that is optically coupled to a dielectrically isolated photodiode array which drives two series connected high voltage MOS transistors. The typical ON-resistance is 20 at 25 mA and is linear up to 50 mA.There is built-in current limiting circuitry in the detector chip,enabling it to pass FCC 68-302 and other regulatory voltage surge requirements when over voltage protection is provided