2SA1962OTU / 2SC5242OTUDoes anyone know of a suitable replacement for Q4 on this PCB?
http://www.mouser.com/Search/ProductDetail.aspx?R=NJW3281Gvirtualkey58410000virtualkey863-NJW3281G
Or does anyone happen to have an extra set of these BJTs?
Thank you so much! I got my PCB and shields and ordered all the components, here's to hoping it fixes my issue.
I plan on using 18 AWG tinned solid for +/- power and output leads and 22 AWG tinned solid for others.What gauge wire are we using ffrom the module to the board on this replacement? 20-22?
Have you looked at the Mouser project BOM? use the link as indicated on the first page.
Q1: NJW1302G, (NJW0302G)
Bipolar Transistors - BJT 250V,15A, 200W(150W) TO-3P PNP
Q2: MJE15033G,(MJE15031G),[FJP1943],{FJPF1943}
Bipolar Transistors - BJT 8A 250V 50W TO-220 PNP
Q3: MJE15032G, (MJE15030G),[FJP5200],{FJPF5200}
Bipolar Transistors - BJT 8A 250V 50W TO-220 NPN
Q4: NJW3281G, (NJW0281G)
Bipolar Transistors - BJT 250V,15A,200W(150W) TO-3P NPN
Q5: BD139 (Any hfe grade)
Bipolar Transistors - BJT 1.5A 80V 12.5W NPN SOT-32(TO-126)
I just want to make sure I'm not mistaken. It doesn't matter if I use a PNP vs a NPN for this specific circuit correct?
Incorrect! You can NEVER intermix PNP / NPN.It doesn't matter if I use a PNP vs a NPN for this specific circuit correct?
Well shoot. The original Q4 from the BOM (http://www.mouser.com/Search/ProductDetail.aspx?R=NJW3281Gvirtualkey58410000virtualkey863-NJW3281G) is an NPN and I ordered PNP (http://www.mouser.com/Search/Produc...OTUvirtualkey51210000virtualkey512-2SA1962OTU) as a replacement. I guess I could have checked that better myself.Incorrect! You can NEVER intermix PNP / NPN.
Ah, this makes sense. I understand now. Thank you!That is because you should match up true complementary pairs for drivers and/or outputs. For example you should not use a Toshiba with a Onsemi or Fairchild npn/pnp pair as drivers nor o/p. It is okay to use a Toshiba pair as drivers and Fairchild pairs for o/p.
Certainly does not hurt to post your order here so that others can review what you are up too b4 you place the order.