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I'm trying to repair an old motherboard with a dead MOSFET and PWM controller, and I figured I'd better replace both MOSFETs, the PWM controller and this "PBYR 1035B" Schottky rectifier diode (TO-263 package).

The problem is that I can't seem to find a replacement that I can buy in my country (I'm from Romania). I've found this DSTB2045C on mouser.com which seems to have similar/higher specs, but with a minimum order quantity of 24k pcs, it's obviously out of reach.

Can anyone recommend another potential suitable replacement that I might be missing, one that is easier to buy either on TME.eu or mouser.com?

PBYR 1035B

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    \$\begingroup\$ Surely Digikey can deliver to Romania? DSTB2045C, 1564 pcs in stock, MOQ = 1 pcs. \$\endgroup\$
    – Lundin
    Dec 22, 2023 at 12:46
  • \$\begingroup\$ Thank you. Unfortunately the delivery price for orders below ~50 euros is quite steep (~ 20 euros), so I've never used it. Ideally, I would prefer TME.eu, which has the best delivery prices in my region, but they don't seem to have any compatible replacement... \$\endgroup\$
    – Tony
    Dec 22, 2023 at 12:57

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ST's STPS1045B is in stock at lcsc.com and Mouser.com and has similar specs except pin 1 is tied to pin 3 rather than NC. You could lift pin 1 if it goes somewhere on your PCB.

enter image description here

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    \$\begingroup\$ It is also available at TME. \$\endgroup\$
    – Lundin
    Dec 22, 2023 at 13:29
  • \$\begingroup\$ Thank you. This one would be great, unfortunately it's in DPAK / TO-252 packaging (I also found quite a few of these), but they're significantly smaller than the original TO-263 diode, and I would prefer to preserve the original aspect of the motherboard (don't ask, I'm crazy). \$\endgroup\$
    – Tony
    Dec 22, 2023 at 13:31
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    \$\begingroup\$ Ah, missed that. The SOT404 designation on the NXP datasheet.. \$\endgroup\$ Dec 22, 2023 at 13:40

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