LH1550

LH1550 HIGH VOLTAGE, SOLID STATE RELAY OPTOCOUPLER FEATURES Normally Open, Single Pole Single Throw Operation Control 350 VAC or DC Voltage Switch 100 mA Loads LED Control Current, 2.5 mA Low ON-Resistance, 37 Ω Typ. at 100 mA Isolation Test Voltage, 3750 VACRMS Current Limit Protection Underwriters Lab File # E52744 APPLICATIONS Telephone Switch Hook High Voltage Test Equipment TRIAC Driver Motor Control Industrial Control Systems DESCRIPTION The LH1550 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 dualin line package. This package offers an insulation dielectric withstand of 3750 VRMS. The coupler 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 37 Ω 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. Package Dimensions in Inches (mm) Pin One ID. 3 .248 (6.30) .256 (6.50) 4 5 6 NC 2 1 A K 1 2 6 5 S NC 3 4 .335 (8.50) .343 (8.70) .039 (1.00) Min. 4° Typ. .018 (0.45) .022 (0.55) S' .300 (7.62) Typ. .130 (3.30) .150 (3.81) 18° Typ. .020 (.051) Min. .031 (0.80) .035 (...