FDH400 vs MMBD4448-TP
| Part Number |
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| Category | Diodes - Rectifiers - Single | Diodes - Rectifiers - Single |
| Manufacturer | ON Semiconductor | Micro Commercial Co |
| Description | DIODE GEN PURP 150V 200MA DO35 | DIODE GEN PURP 75V 250MA SOT23 |
| Package | Tape & Reel (TR) | Cut Tape (CT) |
| Series | - | - |
| Mounting Type | Through Hole | Surface Mount |
| Package / Case | DO-204AH, DO-35, Axial | TO-236-3, SC-59, SOT-23-3 |
| Supplier Device Package | DO-35 | SOT-23 |
| Diode Type | Standard | Standard |
| Current - Average Rectified (Io) | 200mA | 250mA |
| Voltage - Forward (Vf) (Max) @ If | 1.1 V @ 300 mA | 1.25 V @ 150 mA |
| Current - Reverse Leakage @ Vr | 100 nA @ 150 V | 2.5 µA @ 75 V |
| Capacitance @ Vr, F | 2pF @ 0V, 1MHz | 4pF @ 0V, 1MHz |
| Voltage - DC Reverse (Vr) (Max) | 150 V | 75 V |
| Speed | Small Signal =< 200mA (Io), Any Speed | Fast Recovery =< 500ns, > 200mA (Io) |
| Reverse Recovery Time (trr) | 50 ns | 4 ns |
| Operating Temperature - Junction | 175°C (Max) | -55°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. What is the reverse recovery time of a rectifier diode?
Reverse recovery time refers to the time required for a diode to transition from a forward conducting state to a reverse blocking state. A shorter reverse recovery time is particularly important in high-frequency applications to reduce power loss.
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3. 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.
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4. What are the packaging types of rectifier diodes?
There are various packaging types for rectifier diodes, including axial pin packaging (such as DO-41), surface mount packaging (such as SMA, SMB), and high-power packaging (such as TO-220). When selecting, the appropriate packaging should be chosen based on the application's heat dissipation requirements and installation method.
