STPS140UY

The STPS140UY is an ultrafast single silicon-based Schottky rectifier diode, largely used for its high forward current capabilities. With an optimized diffusion technology design, its switching time is almost instantaneous. This diode is available in various packages, such as STPS1404UY and STPS1404Y in the SOD-123 package, and STPS1404SY and STPS1404XY in the SMB package.

Application Fields

• Telecommunications - telephone systems, CATV networks, etc
• Automotive – junction box protection, etc
• Power supplies and converters – AC/DC power sources, UPS, etc
• Inverters and solenoids – starter circuits, control circuits, etc
• Battery-charging and supercapacitor applications

Working Principle

The STPS140UY utilizes the Schottky principle to reduce switching losses by having a very low forward voltage drop. This working principle is based on the junction of metal and semiconductor layers; this junction has Schottky barriers in place to offer low forward resistance in crosstalk. The diode’s di/dt is also optimized due to its low R junction and its Cj being very low, enabling it for high frequency switching.

When the diode is forward biased, its N-type of semiconductor region is attracted by the external source, then allowing a large amount of electrons from the external source to let them pass and creating a current in the circuit, thus creating the Power flow. When the diode is reverse biased, the current is blocked, due to the potential barrier being put by the diode and the electron being blocked from the circuit.