International Rectifier has introduced a new microelectronic relay (MER) that it claims can deliver 75% lower on-resistance and up to 37.5% higher load current capacity compared to similar competing devices.
The primary applications for the PVT212 relay include load switching in industrial controls, telecom line switching and power control and distribution in computer peripherals and instrumentation.
The photovoltaic relay is a single-pole, normally-open solid-state relay that can replace many electromechanical and reed relays to improve reliability. It uses International Rectifier’s proprietary HEXFET power MOSFETs as the output switch, driven by an integrated circuit photovoltaic generator. The output switch is controlled by radiation from a GaAlAs light emitting diode, which is optically isolated from the photovoltaic generator.
The relay offers a load current capacity of up to 550mA in AC-DC mode or up to 825mA in DC-only mode at up to 150V. At the same time, it provides a low on-resistance of 0.75 Ohms maximum in AC-DC mode and 0.25 Ohms maximum in DC-only mode.
The PVT212 also delivers bounce-free operation, eliminates contact wear and tear and has as much as 1,000 times longer life compared to reed and electromechanical relays.
In addition, it has 4,000V RMS input-to-output isolation and an electro-static discharge (ESD) tolerance of 4,000V using the human body model.
The device is packaged in a 6-pin, mouded DIP (dual-in-line package) with either thru-hole (PVT212) or surface mount, gull-wing leads (PVT212S). The MER is available in plastic shipping tubes (50 each) or on tape-and-reel (750 each).
Pricing for the PVT212 begins at US $2.26 each in 50,000-unit quantities. Samples are available now.