This power supply uses eight Schottky rectifiers on its secondary.
The +12 V output is produced by four 48CTQ060 Schottky rectifiers connected in parallel, which can deliver up to 40 A each (measured at 111º C), thus the maximum theoretical current the +12 V line can deliver is of 160 A, which equals to 1,920 W. The maximum current this line can really deliver will depend on other components, especially the transformer, the coil, the capacitor and the wire gauge used.
The +5 V output is produced by two STPS30L45CT Schottky rectifiers connected in parallel, which support up to 30 A (measured at 135º C) each. So the maximum theoretical current the +5 V output can deliver is of 60 A or 300 W. Of course the maximum current this line can really deliver will depend on other components, especially the transformer, the coil, the capacitor and the wire gauge used, as mentioned before.
The +3.3 V output is produced by two other STPS30L45CT Schottky rectifiers connected in parallel, which support up to 30 A (measured at 135º C) each. So the maximum theoretical current the +3.3 V output can deliver is of 60 A or 198 W. Of course the maximum current this line can really deliver will depend on other components, especially the transformer, the coil, the capacitor and the wire gauge used, as mentioned before.
Even though this power supply has a separated rectifier for the +3.3 V output, this rectifier is connected to the same transformer output as the +5 V line, so the maximum current +5 V and +3.3 V can pull together is limited by the transformer.
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Figure 12: Four of the eight Schottky rectifiers used on the secondary. The diode on the left is used by the +5VSB output.
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Figure 13: The other four rectifiers.
On this power supply the thermal sensor is installed inside the +12 V coil. The purpose of this sensor is shutting down the power supply in case of an overheating situation and also controlling the fan speed according to the power supply internal temperature.
On this power supply the active PFC capacitor is rated at 85º C, while the electrolytic capacitors from the secondary are rated at 105º C and are manufactured by CapXon, a Taiwanese company.
