SBR1A20T5-7 vs SK34BTR
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| Category | Diodes - Rectifiers - Single | Diodes - Rectifiers - Single |
| Manufacturer | Diodes Incorporated | SMC Diode Solutions |
| Description | DIODE SBR SOD523 | DIODE SCHOTTKY 40V 3A SMB |
| Package | Cut Tape (CT) | -Reel® |
| Series | Automotive, AEC-Q101, SBR® | - |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | SC-79, SOD-523 | DO-214AA, SMB |
| Supplier Device Package | SOD-523 | SMB (DO-214AA) |
| Diode Type | Super Barrier | Schottky |
| Current - Average Rectified (Io) | 1A | 3A |
| Voltage - Forward (Vf) (Max) @ If | 520 mV @ 1 A | 630 mV @ 3 A |
| Current - Reverse Leakage @ Vr | 200 µA @ 20 V | 1 mA @ 40 V |
| Capacitance @ Vr, F | 19pF @ 20V, 1MHz | 60pF @ 5V, 1MHz |
| Voltage - DC Reverse (Vr) (Max) | 20 V | 40 V |
| Speed | Fast Recovery =< 500ns, > 200mA (Io) | Fast Recovery =< 500ns, > 200mA (Io) |
| Reverse Recovery Time (trr) | 15 ns | - |
| Operating Temperature - Junction | -55°C ~ 150°C | -55°C ~ 150°C |
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1. 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. -
2. 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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3. 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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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.
