Sujet : Re: Cooling a TO-220 7812 regulator
De : jrwalliker (at) *nospam* gmail.com (John R Walliker)
Groupes : sci.electronics.designDate : 19. Sep 2024, 19:40:26
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vchr6q$fglq$1@dont-email.me>
References : 1 2 3 4 5
User-Agent : Mozilla Thunderbird
On 17/09/2024 19:55, Pimpom wrote:
On 18-09-2024 12:12 am, Pimpom wrote:
On 16-09-2024 11:40 pm, john larkin wrote:
>
I agree about the standup vibration issue. Why not use a surface-mount
dpak?
>
I considered using the D2pak version but decided against it. One reason is that I live in one of the most remote regions of a third world and we have nothing like Digikey here. So I've made it a habit to use only the most easily available parts. The D2PAK version of 78xx isn't in that category.
Forgot to mention that I've decided to place the 7812 on the copper side and bolt it directly to the PCB. Changed the layout to accommodate the reversed pin orientation.
Once you have bolted it down you might as well flow solder between the
heat sink tab and the pcb. This will give you the best possible thermal
contact.
John
Re: Cooling a TO-220 7812 regulator
Re: Cooling a TO-220 7812 regulator