Re: 25V H-bridge for <3V logic?

Joerg wrote:

I am going to use BJTs and FETs again, as usual. When looking for arrays
today I was appalled. They want almost $1 for the ZHB6790 bridge. No
way. So it'll be discrete. Again. Just this time SOT416, SOT523 and
stuff like that. SOT23 looks like a huge rock in comparison. Ok in
production but absolutely no fun when prototyping. At least no with the
typical eyesight of a guy who is over the hill.

When you say "prorotyping" with this kind of packages, do you mean you're
actually sitting down yorself and hand-solder the stuff? Or is it just about
debugging machine-assembled prototypes?

Myself, I've been able to avoid SMD altogether to this day (I'm only doing
low-volume "in house" stuff), but right now I'm space-constrained enough to
have to do a SMD design with components on both sides of the PCB. Components
are not smaller than 0805, SOT23 and SO8 so I hope to be able to pull it off
without specialized SMD tools using only a regular fine-tipped soldering
iron and normal tweezers. What worries me most isn't so much the assembly
than possible rework.

robert
.

Relevant Pages

  • Re: 25V H-bridge for <3V logic?
    ... SOT23 looks like a huge rock in comparison. ... Some of the discrete parts look more like dandruff than electronics. ... without specialized SMD tools using only a regular fine-tipped soldering ...
    (sci.electronics.design)
  • Re: BJT/FET mit geringem Reststrom
    ... Jetzt braucht er nur noch in SMD (SOT23 oder kleiner) zu sein. ... und eine PNP Type brauche ich auch noch;-) ... Der muesste bei 100C die 1uA packen, notfalls per Mail nachhaken wenn Du das fuer die ECO schriftlich brauchst: ...
    (de.sci.electronics)
  • Re: BJT/FET mit geringem Reststrom
    ... Jetzt braucht er nur noch in SMD (SOT23 oder kleiner) zu sein. ... und eine PNP Type brauche ich auch noch;-) ... Ich bin immer wieder erstaunt wie schnell ihr die verrücktesten Typen ...
    (de.sci.electronics)