[sdiy] SMT package hell

[Tim Ressel]

I recall many eons ago being staggered by a dip package IC that was 
smaller than 0.1". I think it was a 68000 processor by Toshiba. Kinda 
shook my world a bit. Little did I know it was an omen of things to come.

--Tim (easily shaken apparently) Ressel

On 12/3/2018 7:02 AM, Tom Wiltshire wrote:
> I just wish we could all work out whether we’re still using measurements based on a 0.1” grid or whether we’ve gone metric now. Some packages seem to be one, and some the other, and still others don’t even seem to know what they are. It’s a total dog’s breakfast.
>
> Tom
>
> ==================
>         Electric Druid
> Synth & Stompbox DIY
> ==================
>
>> On 3 Dec 2018, at 14:04, Tim Ressel <timr at circuitabbey.com> wrote:
>>
>> Did you hear me scream?
>>
>> I picked a part that sez its SOT-505. Okay, what is that? I look at the datasheet which sez its the same as tssop8. Then I look up tssop8. They do not match. then I find a sot-505-2. Also doesn't match. This really throws generic package names out the window. As I make a custom footprint for this part I ponder the state of the industry and the ineffectual efforts of the gurus of standards like EIA.
>>
>> -- 
>> --Tim Ressel
>> Circuit Abbey
>> timr at circuitabbey.com
>>
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>
-- 
--Tim Ressel
Circuit Abbey
timr at circuitabbey.com