KBL005-E4/51 vs GBU4G
| Part Number |
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| Category | Diodes - Bridge Rectifiers | Diodes - Bridge Rectifiers |
| Manufacturer | Vishay Semiconductor - Diodes Division | Fairchild Semiconductor |
| Description | BRIDGE RECT 1PHASE 50V 4A KBL | RECT BRIDGE GPP 4A 400V GBU |
| Package | Bulk | 4-SIP, GBU |
| Series | - | - |
| Operating Temperature | -50°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | 4-SIP, KBL | 4-SIP, GBU |
| Supplier Device Package | KBL | GBU |
| Technology | Standard | Standard |
| Diode Type | Single Phase | Single Phase |
| Voltage - Peak Reverse (Max) | 50 V | 400V |
| Current - Average Rectified (Io) | 4 A | 4A |
| Voltage - Forward (Vf) (Max) @ If | 1.1 V @ 4 A | 1V @ 4A |
| Current - Reverse Leakage @ Vr | 5 µA @ 50 V | 5µA @ 400V |
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1. What is the working principle of bridge rectifier?
The bridge rectifier converts the input AC power into DC power through an arrangement of four diodes. Every half cycle, two diodes conduct, converting both positive and negative half waves of alternating current into direct current in the same direction.
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2. What are the advantages of bridge rectifier compared to single diode rectifier?
Bridge rectifier is more efficient than single diode (half wave) rectifier because it can use two and a half cycles of AC power, not just one and a half cycles, thereby improving the output power efficiency and stability.
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3. What is the peak reverse voltage (PIV) of a bridge rectifier?
Peak reverse voltage (PIV) is the maximum voltage that a bridge rectifier can withstand when reverse biased. When selecting a bridge rectifier, the PIV should be at least twice the peak voltage of the input AC power to prevent diode breakdown under reverse voltage.
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4. Does the bridge rectifier require heat dissipation?
Yes, high-power bridge rectifiers typically generate a large amount of heat and require cooling through radiators or cooling schemes to reduce temperature and prevent component damage due to overheating.
