G9 HV reg question

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mort

Member
Joined
May 7, 2005
Messages
16
Location
Washington State USA
Just wondering how much heat sink is required? I got stuck with a surfacemount jerry-rigged "kte" package. I'm worried I might have to get creative :roll:
 
Never tried them in SMD. You'll need creativity indeed.

G9 TL783 dissipation is normally around 1.5-2.5W

Let us know what you end up with!

Jakob E.
 
yea I tacked he leads with extra wire and mounted it, we'll see what melts ::?: : it's all I could get in stock in the US....


BTW Jakob I appriciate the fact the designer of the project I'm building (and so excited about) is responding to me - let alone the first to respond :thumb: this board rocks!
 
are you familiar with this package?
You scared me a little once once I re-red you're msg. I have no Idea how to dissapate 2W off this pice of silacon.... no mounting hole no nuthin'. Maybe cable tie a littlte pice of aluminium to it?!
 
Not knowing the SMD-783, I think the idea is that you solder it's largest (centre) tab to a large copper plane (i.e. unetched PCB area). At least this is how SMD power transistors are heatsunk. My guess is that 2.5x2.5cm or so would be sufficient.

What does the data sheet say about this?

Jakob E.
 
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