This power supply uses six Schottky rectifiers on its secondary.
The +12 V output is produced by two MBR40100PT Schottky rectifiers connected in parallel, which can deliver up to 40 A each (measured at 162º C), thus the maximum theoretical current the +12 V line can deliver is of 80 A, which equals to 960 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 MBR4045PT Schottky rectifiers connected in parallel, which support up to 40 A (measured at 125º C) each. So the maximum theoretical current the +5 V output can deliver is of 80 A or 400 W. Of course the maximum current (and thus power) 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 MBR4045PT Schottky rectifiers connected in parallel. So the maximum theoretical current the +3.3 V output can deliver is of 80 A or 264 W. As explained the real maximum capacity depends on the other components used.
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Figure 12: Three of the six Schottky rectifiers used on the secondary.
The thermal sensor from this power supply is located on the secondary heatsink, as you can see on Figure 12. This sensor is used to control the fan speed according to the power supply internal temperature and also to shut the power supply down if it implements over temperature protection (OTP).
This power supply uses a PS223 monitoring integrated circuit, which is in charge of the power supply protections, like OCP (over current protection). This IC also provides over voltage protection (OVP), under voltage protection (UVP) and over temperature protection (OTP), but not over power protection (OPP).
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Figure 13: Monitoring integrated circuit.
We couldn’t identify the manufacturer from the electrolytic capacitors used on the secondary, which are rated at 105º C.
