Rectifier Diodes & Schottky Diodes

What is a Rectifier Diode?
A rectifier diode main purpose is to rectify alternating currents. It's used to flow a current through a circuit in one direction, in contrast to elements such as resistors a rectifiers current has a non-linear relationship to the voltage across it. The diode will be forward bias when positive voltage is being applied and will do its best to operate as a short circuit and allow the current to flow through the diode freely. Its main task is to convert an alternating current (AC) into a direct current (DC) through the application of rectifier bridges. A rectifier diode can sometimes be used as a Schottky Rectifier.

What is a Schottky Diode?
A Schottky Diode is sometimes referred to as a Barrier Diode or a Hot Carrier Diode. The Schottky is a single type of electronic component which is a semiconductor. It has fast switching action with an accompanying low forward voltage drop, when current flows through the diode, a small voltage drop happens across the diode terminals.
A standard diode has a voltage drop between 0.6 and 1.7 volts whereas a Schottkys drop is between 0.15 and 0.45 volts. This lower voltage drop facilitates a high switching speed as well as improved system efficiency.

What are Schottky Diodes used for?
• They are used for the voltage clamping of applications, also as a preventative of transistor saturation. This is because they have a high current density,
• They can be used as rectifiers (in power supplies.
• A good element to use in applications that are sensitive and efficiency
• To prevent batteries from discharging
• Solar panels and grid connected systems

Why should I use a Schottky?
• They feature a low turn voltage between 0.15 and 0.45 volts
• A fast recovery time, resulting in a small amount of stored charge that can then be used for high speed switches.
• The low junction capacitance occupies a small space, after the results given from the wire point contact the silicon, the capacitance levels are also very small.
• Higher efficiency
• Integrated guard ring for stress protection

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Description Price Mounting Type Package Type Maximum Continuous Forward Current Peak Reverse Repetitive Voltage Diode Configuration Rectifier Type Diode Type Pin Count Maximum Forward Voltage Drop Number of Elements per Chip Diode Technology Peak Reverse Recovery Time Diameter Maximum Forward Current
RS Stock No. 171-9489
Mfr. Part No.D6020LTP
BrandLittelfuse
€1.01
Each (In a Tube of 500)
units
Through Hole TO-220AB 20A 600V Single Switching Silicon Junction 3 1.6V 1 Silicon Junction 4µs - -
RS Stock No. 878-1877
Mfr. Part No.DK025L
BrandLittelfuse
€1.38
Each (In a Pack of 1000)
units
Through Hole TO-220 25A 1000V Single - Silicon Junction 3 1.6V 1 Silicon Junction 4µs - -
RS Stock No. 171-9490
Mfr. Part No.DST2045AX
BrandLittelfuse
€0.52
Each (On a Reel of 2500)
units
Through Hole P600 20A 45V Single - Schottky 2 580mV 1 Schottky Barrier - 9.1mm -
RS Stock No. 171-9652
Mfr. Part No.DST2045AX
BrandLittelfuse
€1.142
Each (In a Pack of 5)
units
Through Hole P600 20A 45V Single - Schottky 2 580mV 1 Schottky Barrier - 9.1mm -
RS Stock No. 171-9643
Mfr. Part No.D6020LTP
BrandLittelfuse
€1.81
Each (In a Pack of 5)
units
Through Hole TO-220AB 20A 600V Single Switching Silicon Junction 3 1.6V 1 Silicon Junction 4µs - -
RS Stock No. 878-1870
Mfr. Part No.D6025L
BrandLittelfuse
€1.24
Each (In a Pack of 500)
units
Through Hole TO-220 25A 600V Single - Silicon Junction 3 1.6V 1 Silicon Junction 4µs - -