[sdiy] Tempcos

[harrybissell]

LPTC12T31001J  1/6W 1Kohm +3500 T.C.  5%

H^) harry

damion at poweracoustics.org wrote:

> I'm not familiar with those, but looking at their site, do you mean the
> D-100F type?
>
> Damion
>
> On Dec 16, 2004, at 7:32 PM, harrybissell wrote:
>
> > I don't know that the surface mount tempcos are that much better than
> > the thin film
> > through hole types from Micro-ohm.  These are a little over $1 each in
> > hundreds... could you
> > do a board for that ???
> >
> > H^) harry
> >
> > damion at poweracoustics.org wrote:
> >
> >> If you go to digikey.com and type CDCT-ND into the search box, you'll
> >> get a bunch of values that they have available.
> >> They're all about 55 cents each with a minimum order of 10.
> >>
> >> They're very small, so I wouldn't recommend using them unless you're
> >> comfortable with your soldering skills.
> >> You want them in physical contact with the transistors, so I
> >> carefully soldered very thin & VERY flexible leads to each side of
> >> the tempco.
> >> Depending on your application, you then solder the ends of the leads
> >> to wherever they go in your circuit and carefully arrange them in
> >> contact with the appropriate transistors. I used a little gob of
> >> heatsink compound and held it all together with a very small ty-wrap.
> >>
> >> I actually wasn't too thrilled with this method, but it seemed to
> >> work ok.
> >>
> >> This has all gotten me to think about having a batch of miniature
> >> pcbs made.- with pads to mount one or two of these tiny tempcos and
> >> holes for wire leads. These could be so small, that I think they'd be
> >> cost effective, and maybe solve this tempco problem for a lot of
> >> us...
> >>
> >> Does any of this make sense?
> >>
> >> Damion
> >>
> >> On Dec 16, 2004, at 1:44 PM, Laxt57 at aol.com wrote:
> >>
> >>      Hi Damion
> >>       Hey tell me about the surface mount tempcos. By that
> >>      I mean where do you get them from and how to mount
> >>      them?
> >>       I hope to hear from Ray/Jay/Jason,but have not yet.
> >>      Jeri
> >>
> >>
> >> damion romero
> >> damion at poweracoustics.org
> >> http://poweracoustics.org
> >> http://p-tapes.com
> >
> >
> damion romero
> damion at poweracoustics.org
> http://poweracoustics.org
> http://p-tapes.com