STTH2R02AFY

Series:	Automotive, AEC-Q101, ECOPACK®2
Packaging:	Tape & Reel (TR)
Part Status:	Active
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	200V
Current - Average Rectified (Io):	2A
Voltage - Forward (Vf) (Max) @ If:	1.02V @ 2A
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	20ns
Current - Reverse Leakage @ Vr:	800nA @ 200V
Capacitance @ Vr, F:	--
Mounting Type:	Surface Mount
Package / Case:	SOD-128
Supplier Device Package:	SOD128Flat
Operating Temperature - Junction:	-40°C ~ 175°C

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Diodes are an essential component of many electronics devices, providing a key function as a rectifying element. One particularly versatile diode example is the STTH2R02AFY, a bridge rectifier comprised of four discrete diodes connected in a series/parallel configuration.This device is commonly employed in applications for DC-DC converters, switch mode power supplies, rectified power supplies, battery charge circuits, and other operations requiring the conversion of AC current to DC current. The following section will detail the construction and working principle of the STTH2R02AFY rectifier.Construction The STTH2R02AFY Bridge Rectifier consists of four discrete diodes, each one specifically constructed to fulfill a particular function. As can be observed in the circuit diagram below, the four diodes are laid out in a pattern resembling two individual rectifiers feeding into each other. The two discrete rectifiers are offset by 180° and make up the arms of a bridge rectifier. The diodes encased in the STTH2R02AFY are usually individual silicon chips, although they may be combined with other diodes into a single package.

Working PrincipleWhen voltage is applied to the terminal A and B of the STTH2R02AFY Bridge Rectifier, current passage is enabled through the anode-to-cathode path created by all four of the integrated diodes. As the input voltage alternates from positive to negative polarity, the current path alternates as well, and the forward-biased arrangement of the diodes ensures continual and uninterrupted current flow.The alternating polarity also creates a pulsating DC voltage wave at the output side of the STTH2R02AFY. This is due to the slightly longer conduction period for the parasitic capacitance in the internal diodes structure. Even so, both the voltage and the ripple output will be largely constant. The STTH2R02AFY diode bridge rectifier is designed to convert AC current to DC current, making it an invaluable component of many electronics devices and power systems. The circuit’s low forward voltage drop serves to both diminish energy loss and maximize energy efficiency. Depending upon the mounted conditions and ambient environment, the rectifier’s total forward current can range from 2 A to 4 A and its total reverse voltage can range from 200 V to 400 V. ConclusionThe STTH2R02AFY diode bridge rectifier is a low cost, conducive AC-to-DC converter used in a wide range of consumer and industrial applications. Constructed with four discrete diodes, it can withstand large input fluctuations and generate a consistent yield of current with very low ripple. With its versatility, cost efficiency, and low power output, this rectifier is an attractive option for many applications.

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