Re: gEDA-user: Double sided surrface mount pad

[kai-martin knaak <kmk@xxxxxxxxxxxxxxx>]

ggallant571@xxxxxxxxxxx wrote:

>    DJ,
> 
> 
> 
>    Can you provide an example?

I am not DJ but one of my MMIC footprints uses both sides of the
board for cooling. Multiple vias in between act as heat pipes.
The footprint is on gedasymbols:
http://www.gedasymbols.org/user/kai_martin_knaak/footprints/specific/MINICIRCUITS_MMIC.fp

I'll paste it here, anyway:

Element["" "" "MMIC" "" 120000 190000 -6000 10000 0 100 ""]
(
	Pin[-5000 14000 3600 2000 0 2000 "2" "2" "thermal(0S)"]
	Pin[0 14000 3600 2000 0 2000 "2" "2" "thermal(0S)"]
	Pin[5000 14000 3600 2000 0 2000 "2" "2" "thermal(0S)"]
	Pin[5000 9000 3600 2000 0 2000 "2" "2" "thermal(0S)"]
	Pin[-5000 9000 3600 2000 0 2000 "2" "2" "thermal(0S)"]
	Pin[-5000 -8000 3600 2000 0 2000 "2" "2" "thermal(0S)"]
	Pin[-5000 -14000 3600 2000 0 2000 "2" "2" "thermal(0S)"]
	Pin[0 -14000 3600 2000 0 2000 "2" "2" "thermal(0S)"]
	Pin[5000 -14000 3600 2000 0 2000 "2" "2" "thermal(0S)"]
	Pin[5000 -8000 3600 2000 0 2000 "2" "2" "thermal(0S)"]
	Pin[0 2000 3600 2000 0 2000 "2" "2" ""]
	Pin[0 -2000 3600 2000 0 2000 "2" "2" ""]
	Pad[0 5000 0 10000 4000 2000 4800 "2" "2" "edge2"]
	Pad[5000 0 10000 0 4000 2000 4800 "3" "3" "square,edge2"]
	Pad[0 -10000 0 -5000 4000 2000 5200 "2" "2" ""]
	Pad[-10000 0 -5000 0 4000 2000 4800 "1" "1" "square"]
	Pad[0 -5000 0 5000 3500 2000 0 "2" "2" ""]
	Pad[7000 0 11000 0 6600 2000 1400 "3" "3" "edge2"]
	Pad[-12000 0 -7000 0 6600 2000 600 "1" "1" ""]
	Pad[-2000 -11000 2000 -11000 10000 2000 400 "2" "2" "square,edge2"]
	Pad[-2000 11000 2000 11000 10000 2000 200 "2" "2" "square,edge2"]
	ElementLine [5000 0 8000 0 2500]
	ElementLine [0 -5000 0 -8000 2500]
	ElementLine [0 5000 0 8000 2500]
	ElementLine [-5000 0 -8000 0 2500]
	ElementLine [-9000 -1000 -11000 1000 600]
	ElementLine [-11000 1000 -8000 1000 600]
	ElementLine [-9000 -1000 -8000 -1000 600]
	ElementLine [-10000 500 -9500 500 1181]
	ElementLine [-9500 500 -9000 0 1181]
	ElementArc [1 1 3938 3938 270 90 1181]
	ElementArc [1 -1 3936 3936 180 90 1181]
	ElementArc [-1 -1 3938 3938 90 90 1181]
	ElementArc [0 0 3937 3937 0 90 1181]
	ElementArc [-2999 0 1000 1000 180 90 1181]
	ElementArc [-3001 0 1001 1001 90 90 1181]

	)

-- 
Kai-Martin Knaak
Ãffentlicher PGP-SchlÃssel:
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x6C0B9F53



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