| Unit Price: | $ 0.4 |
The MBRL3045CT is a dual common-cathode Schottky barrier rectifier diode in a TO-220AB surface-mount package, rated at 30A 45V, designed for low-voltage, high-current, high-frequency rectification applications. Its extremely low forward voltage drop (Vf typical 0.55V @ 15A) and fast switching characteristics make it an ideal replacement for troubleshooting secondary rectifier circuits in Bitmain APW12 series mining rig power supplies.
1. Low forward voltage drop, typically 0.55V @15A, reducing conduction losses and improving power efficiency.
2. High surge current capability, 200A+ non-repeating surge withstand capability, handling power-on impacts.
3. Fast switching, Schottky barrier structure, extremely short reverse recovery time, suitable for high-frequency switching power supplies.
4. TO-220AB surface mount package, excellent heat dissipation, suitable for automated placement and high-density power supply designs.
5. Common cathode dual diodes, two diodes integrated in a single package, saving PCB space.
Model number | MBRL3045CT |
Repetitive peak reverse voltage | 45V |
DC blocking voltage | 45V |
Average rectified output current | 30A |
Average rectified current (per diode) | 15A |
Forward voltage drop (typical @15A) | 0.55V |
Forward voltage drop (max @15A) | 0.75V |
Non-repetitive peak inrush current | 200~250A |
Reverse leakage current @25°C / @100°C | 0.1 / 50mA |
Operating junction temperature range | -55 ~ +150°C |
In the APW12 series power supplies, the MBRL3045CT primarily performs the function of low-voltage, high-current rectification on the secondary side:
1. Rectifies the AC pulse output from the secondary side of the high-frequency transformer into DC.
2. Provides efficient rectification for the 12V output rail, reducing conduction losses.
3. Provides stable DC output in conjunction with the output inductor and filter capacitor.
1. Power-off discharge: Before repair, ensure the power supply is completely disconnected and discharge the large capacitor using a discharge rod.
2. Desoldering: Use a hot air gun (350~380°C) and a soldering iron to remove the MBRL3045CT component, paying attention to the heatsink pads.
3. Cleaning pads: Remove residual solder and ensure the new component is mounted flat.
4. Thermal treatment: The pads on the back of the MBRL3045CT are both cathode and heat dissipation surfaces; ensure the solder is fully wetted during soldering.
5. Polarity confirmation: Common cathode structure; the middle pin is the cathode (connected to the heatsink pad), and the two side pins are the two anodes.
6. Power-on test: After replacement, first measure the output voltage under no load (normal 12.1~12.5V), then gradually apply load for testing.
Related products:
Bitmain APW12 233A Power Supply
Antminer APW12 1417 PSU for L7 D7 S19JL S19L
Antminer APW12 PSU 1215 a / b / c / d / e / f / g version
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