> I have a part with no vendor recommended footprint. It's called VSOP30
> pin pitch = 0.22mm +/- 0.1
> center-to-center = 0.65mm
> outside-to-outside width = 7.6mm +/- 0.2mm
> pin size is 0.45mm +/- 0.2mm
My design rules are:
* pad width for largest pin width, or more.
* pads extend under the
> How much pad do you need on the outside of the pin, and how much on the
> inside assuming hand soldering?
I used the PCB Matrix IPC calculator (MOST setting) and the
recommended pads came out as,
7.2mm centre-to-centre
1.75mm pad length
0.45mm pad width
Putting it through my footprint generato
On Sun, 19 Jul 2009 10:37:24 -0400, gene glick wrote:
> I came up with this:
> pad length = 2.1mm
> outside-to-outside = 9.8mm
> inside-to-inside = 5.6mm
>
> Is that reasonable?
I'd say, it is ok. If I had to solder some prototypes, I'd use drag
soldering rather than solder each and every pin
I have a part with no vendor recommended footprint. It's called VSOP30
pin pitch = 0.22mm +/- 0.1
center-to-center = 0.65mm
outside-to-outside width = 7.6mm +/- 0.2mm
pin size is 0.45mm +/- 0.2mm
Here's the data sheet, see pg 30.
data sheet:
http://www.asahi-kasei.co.jp/akm/en/product/ak4390/ak4
4 matches
Mail list logo
