VSSAF5N50-M3/6B vs U2D-E3/52T
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| Category | Diodes - Rectifiers - Single | Diodes - Rectifiers - Single |
| Manufacturer | Vishay Semiconductor - Diodes Division | Vishay Semiconductor - Diodes Division |
| Description | DIODE SCHOTTKY 50V 3A DO221AC | DIODE GEN PURP 200V 2A DO214AA |
| Package | Tape & Reel (TR) | Tape & Reel (TR) |
| Series | TMBS®, SlimSMA™ | - |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | DO-221AC, SMA Flat Leads | DO-214AA, SMB |
| Supplier Device Package | DO-221AC (SlimSMA) | DO-214AA (SMB) |
| Diode Type | Schottky | Standard |
| Current - Average Rectified (Io) | 3A (DC) | 2A |
| Voltage - Forward (Vf) (Max) @ If | 410 mV @ 2.5 A | 900 mV @ 2 A |
| Current - Reverse Leakage @ Vr | 1.4 mA @ 50 V | 10 µA @ 200 V |
| Capacitance @ Vr, F | 850pF @ 4V, 1MHz | - |
| Voltage - DC Reverse (Vr) (Max) | 50 V | 200 V |
| Speed | Fast Recovery =< 500ns, > 200mA (Io) | Fast Recovery =< 500ns, > 200mA (Io) |
| Reverse Recovery Time (trr) | - | 27 ns |
| Operating Temperature - Junction | -40°C ~ 150°C | -55°C ~ 150°C |
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1. What is a fast recovery diode?
Fast recovery diode is a special type of rectifier diode with a short reverse recovery time, suitable for high-frequency power supplies and switch mode power supplies (SMPS) applications, reducing switching losses.
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2. What is the difference between Schottky diodes and traditional silicon rectifier diodes?
Schottky diodes have a lower forward voltage drop (typically 0.2V to 0.3V) and faster switching speed, making them suitable for high-frequency applications. However, their reverse voltage is relatively low and is typically used in circuits with lower voltages.
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3. Can a single rectifier diode be used for high-frequency applications?
Traditional silicon rectifier diodes are not suitable for high-frequency applications because their reverse recovery time is relatively long. For high-frequency applications, fast recovery diodes or Schottky diodes are typically used to reduce switching losses and improve efficiency.
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4. How to identify the polarity of a single rectifier diode?
Rectifying diodes usually have polarity markings, with the positive (anode) of the diode being "+" and the negative (cathode) being "-". On the packaging of diodes, there is usually a circular mark on the cathode side indicating the direction of the diode.
