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F3 and F4 Clone PCB Reissue group buy, also F5 PCBs

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woodturner-fran

Member
Joined 2006
Mouser F3 BOM

OK,

so I have an excel spreadsheet done up for mouser for an F3 BOM. Questions though:

1. Mouser aren't great for the 15,000uF caps. So I was thinking of doing this:

You can also use secondaries separately, powering both halves independently and connecting outputs in series (GND with V+). That will also produce 46V but the advantage here is the use lower voltage rated caps (25V or so) and having more overall capacitance, possibly one boards per two channels.
Click to expand...

which would allow me to use the 25V caps. Are we still ok with this for an F3?

2. I have picked Nichicon Low Impedance Aluminum Electrolytic Capacitors - 105 Degree 220uF 63V 105c 10x25 20% for the 220uF caps. Will they (10 x 25mm) fit the boards OK?


3. The 1uF is a MKP which is 10.5 mm W x 26.5 mm L x 18.5 mm H with a lead spacing of 22.5mm. Will that fit right in?

4. Same goes for the 33pF, wima FKP: 5mm lead spacing?


If someone is willing to check my list (twice given the time of year) would you email me and I'll send it on to you.


Fran


now off to work on the same for an F5:whip:
 
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woodturner-fran

Member
Joined 2006
Peter:

will 1/2W resistors fit on the F3 and F5 boards or are we better keeping them to 1/4W ones?

Also - what is a good choice for the diodes on the PS boards? I picked out mouser p/n 844-MUR3020WTPBF Ultra Fast Recovery Rectifiers 200 Volt 30 Amp Common Cathode, but they are pricey..... are there others that are still ok but cheaper?


Any takers for someone to do a check on a mouser parts list?


Fran
 
Peter Daniel

Peter Daniel

Member
Joined 2002
audiosector.com
Paid Member
I would suggest Dale CMF50 (1/4W) resistors available from DigiKey: http://dkc3.digikey.com/PDF/C083/P1843.pdf They fit the boards nicely. Another alternative could be Caddock MK132.

As to diodes, didn't test those yet so it's hard for me to recommend.
 

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woodturner-fran

Member
Joined 2006
OK,


thanks Peter, I will go back and look at the resistor choices again and go for the 1/4W option. Let me post my second question another way...... What are you going to use as diodes for your F5?:D :D

Pity, shipping from digikey to here is a right PITA.... and mouser just works out every time so I am reluctant to change from them.


Fran
 
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