Description

The IL351E is a linear optocoupler in the IL350/351/358/359 family. It consists of an IRLED optically coupled to two photodiodes. The emitter mechanically faces both diodes, allowing them to receive an equal amount of infrared light. The diodes produce photocurrents in proportion to the amount of light received. The ratio of the photocurrents remains constant with high accuracy, even when the LED current or ambient temperature changes. This optocoupler enables optical control of the output diode current by controlling the input photodiode current.

Specifications and features

The IL351E is a 2.0 mm high SMD package with high sensitivity (K1) at a low operating LED current. It couples both AC and DC signals and has low input-output capacitance. The optocoupler offers an isolation voltage of 3000 VRMS, low distortion, and is a lead (Pb)-free component compliant with RoHS 2002/95/EC and WEEE 2002/96/EC.

Application Scenarios

The IL351E is commonly used for optical DAA in V.34 FAX/modem PCMCIA cards and digital telephone line isolation.

Comparison