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did i buy the wrong fuse?

did i buy the wrong fuse?

2006-10-25 by bambam4236

In looking for the fuse for the main PCB i followed the US BOM and 
found the part number to be no longer available, mouser suggested an 
alternative which was this 
http://www.mouser.com/search/ProductDetail.aspx?R=TR1%
2fMCRW500MAvirtualkey50400000virtualkey504-MCRW-500MA

I realise now that the part i should have got was this
http://www.mouser.com/search/ProductDetail.aspx?R=MF-R050-0-
99virtualkey65210000virtualkey652-MFR050-LF

The one i got is described as a Axial Lead Non-Time Delay Fuses 
125V .5A, Fast Acting Wire-in-Air 
Whereas the part spec'd is described as Radial Lead Resettable 
Fuses .5A 60V 

Fuses are i guess something i havent come across so far in DIY synth 
stuff so i'm not sure if this is a problem or not? i figured i 
should ask before i powere the P3 on for the first time.

Thanks to all that helped me to get this finished by answering my 
questions ;)

Brett

Re: did i buy the wrong fuse?

2006-10-25 by bambam4236

Hi Colin

yet another quick reply ;) yeah it fits the pcb up on its side but 
you have confirmed what i guessed and that is that its a one off 
fuse that will need replacing if it ever blows...hopefully no need 
for that! My soldering is pretty neat etc so i should be fine.
Funny that mouser pointed to this part when they had exactly the 
right part elsewhere on the site just under a differnt part number.
Thanks again for the quick response.

cheers
Brett

--- In analogue-sequencer@yahoogroups.com, "Colin Fraser" 
<colin@...> wrote:
>
> 
> > The one i got is described as a Axial Lead Non-Time Delay Fuses 
> > 125V .5A, Fast Acting Wire-in-Air 
> > Whereas the part spec'd is described as Radial Lead Resettable 
> > Fuses .5A 60V 
> > 
> > Fuses are i guess something i havent come across so far in DIY 
synth 
> > stuff so i'm not sure if this is a problem or not? i figured i 
> > should ask before i powere the P3 on for the first time.
> 
> If the fuse you've got can fit in the board OK, it will be fine - 
unless it
> blows, in which case you'll need to solder in a new one.
> But if you have all the chips in the right way, and your soldering 
isn't
> appallingly bad, the chances of blowing the fuse are tiny.
> Personally I've never once blown the fuse on a P3.
> I only seem to short out power supplies that put out serious 
voltage when
Show quoted textHide quoted text
> I've rigged them up without a fuse ;-)
> 
> Best regards,
> Colin Fraser
> Sequentix Music Systems Ltd
> http://www.sequentix.com
>

RE: [analogue-sequencer] did i buy the wrong fuse?

2006-10-25 by Colin Fraser

> The one i got is described as a Axial Lead Non-Time Delay Fuses 
> 125V .5A, Fast Acting Wire-in-Air 
> Whereas the part spec'd is described as Radial Lead Resettable 
> Fuses .5A 60V 
> 
> Fuses are i guess something i havent come across so far in DIY synth 
> stuff so i'm not sure if this is a problem or not? i figured i 
> should ask before i powere the P3 on for the first time.

If the fuse you've got can fit in the board OK, it will be fine - unless it
blows, in which case you'll need to solder in a new one.
But if you have all the chips in the right way, and your soldering isn't
appallingly bad, the chances of blowing the fuse are tiny.
Personally I've never once blown the fuse on a P3.
I only seem to short out power supplies that put out serious voltage when
I've rigged them up without a fuse ;-)

Best regards,
Colin Fraser
Sequentix Music Systems Ltd
http://www.sequentix.com

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