1N5821 vs SB5100E-G
| Part Number |
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| Category | Diodes - Rectifiers - Single | Diodes - Rectifiers - Single |
| Manufacturer | Fairchild Semiconductor | Comchip Technology |
| Description | RECTIFIER, SCHOTTKY, 3A, 30V | DIODE SCHOTTKY 100V 5A DO201AD |
| Package | Bulk | Tape & Reel (TR) |
| Series | - | - |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | DO-201AA, DO-27, Axial | DO-201AD, Axial |
| Supplier Device Package | DO-201 | DO-201AD |
| Diode Type | Schottky | Schottky |
| Current - Average Rectified (Io) | 3A | 5A |
| Voltage - Forward (Vf) (Max) @ If | 900 mV @ 9.4 A | 850 mV @ 5 A |
| Current - Reverse Leakage @ Vr | 2 mA @ 30 V | 500 µA @ 100 V |
| Capacitance @ Vr, F | - | 500pF @ 4V, 1MHz |
| Voltage - DC Reverse (Vr) (Max) | 30 V | 100 V |
| Speed | Fast Recovery =< 500ns, > 200mA (Io) | Fast Recovery =< 500ns, > 200mA (Io) |
| Reverse Recovery Time (trr) | - | - |
| Operating Temperature - Junction | -50°C ~ 150°C | -65°C ~ 150°C |
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1. What is the working principle of a single rectifier diode?
A rectifier diode conducts current when forward biased, converting the positive half wave of alternating current into direct current. When reverse biased, the diode blocks the current, thereby preventing the negative half wave from passing through and achieving rectification effect.
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2. How to choose the appropriate rectifier diode?
When making a choice, the following factors need to be considered:
Current capacity: Determine the maximum current that the diode needs to handle.
Reverse voltage: Ensure that the reverse voltage of the diode can withstand the highest voltage in the circuit.
Forward voltage drop: A lower forward voltage drop can improve circuit efficiency.
Recovery time: For high-frequency applications, choose fast recovery or Schottky diodes. -
3. What is the difference between a single rectifier diode and a bridge rectifier?
A single rectifier diode can only rectify the positive half wave of AC power (half wave rectification), while a bridge rectifier composed of four diodes can rectify the positive and negative half waves of AC power (full wave rectification), with higher efficiency and smoother output.
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4. 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.
