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PICList Thread
'[EE]Surface Mount Devices'
2006\05\14@063036 by Roy

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Does anyone have a guide that explains SMD devices sizes and or
recommendations for the sizes to use in prototyping at home.


_______________________________________

Feel the power of the dark side!  
Atmel AVR

Roy Hopkins
Tauranga
New Zealand
_______________________________________



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2006\05\14@180329 by Bob Axtell

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Roy wrote:
> Does anyone have a guide that explains SMD devices sizes and or
> recommendations for the sizes to use in prototyping at home.
>  
>
> _______________________________________
>
> Feel the power of the dark side!  
> Atmel AVR
>
> Roy Hopkins
> Tauranga
> New Zealand
> _______________________________________
>
>
>
>  
Anything smaller than 0805 will be very slow to assemble. Anything smaller
that SOIC will eventually cause you to lose traces, unless you have a
hot-air
assembly unit.  0402 is a serious joke... a sneeze will blow away all
your inventory.

I have sucessfully done TSSOP28 but it is always dicey. I only use these
sizes as
a last resort.

--Bob


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2006\05\15@072649 by Carey Fisher

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Bob Axtell wrote:
> Roy wrote:
>> Does anyone have a guide that explains SMD devices sizes and or
>> recommendations for the sizes to use in prototyping at home.
>>
>>  
> Anything smaller than 0805 will be very slow to assemble. Anything
> smaller
>
> I have sucessfully done TSSOP28 but it is always dicey.
Hey - you made a funny... "always dicey"
;)
Carey


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2006\05\15@080722 by Bob Axtell

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Carey Fisher wrote:
> Bob Axtell wrote:
>> Roy wrote:
>>> Does anyone have a guide that explains SMD devices sizes and or
>>> recommendations for the sizes to use in prototyping at home.
>>>
>>>  
>> Anything smaller than 0805 will be very slow to assemble. Anything
>> smaller
>>
>> I have sucessfully done TSSOP28 but it is always dicey.
> Hey - you made a funny... "always dicey"


like, "if it works its a Fluke"?  or

"Ya can't trust it when the chips are down?"

hehe

--Bob
> ;)
> Carey



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2006\05\15@084832 by Bob J.

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www.fpga4fun.com/SMD.html

Regards,
Bob

On 5/14/06, Roy <spam_OUTroy.hTakeThisOuTspamihug.co.nz> wrote:
>
> Does anyone have a guide that explains SMD devices sizes and or
> recommendations for the sizes to use in prototyping at home.
>

2006\05\15@085706 by Vasile Surducan

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On 5/14/06, Roy <.....roy.hKILLspamspam@spam@ihug.co.nz> wrote:
> Does anyone have a guide that explains SMD devices sizes and or
> recommendations for the sizes to use in prototyping at home.

Start with 1206. 0805 will be almost the same, 0603 is still easy to
solder manually if you'll buy a 0.38 mm flux solder, a no clean #951
kester flux pen
and you already have a good chinese hot air rework station ($150 to $400 in US).

good=accurate air flow and temperature reglages

In my opinion 0402 and 0603 is not for home prototyping and require
both a good magnifier lense.

About packages, anything else smaller than SO or SM (1.27mm or 0.5mm
pitch) is not recommendend for home prototyping even it's possible if
you're young and
pacient...

greetings,
Vasile



{Quote hidden}

> -

2006\05\15@093213 by alan smith

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Depends on experiance.  yes...start with 1206 and work down.  Last board I did put mostly 806 but had some 603 and 402 on it.  Helps if you have a microscope to do the really fine pitch stuff.  

Vasile Surducan <piclist9spamKILLspamgmail.com> wrote:  On 5/14/06, Roy wrote:
> Does anyone have a guide that explains SMD devices sizes and or
> recommendations for the sizes to use in prototyping at home.

Start with 1206. 0805 will be almost the same, 0603 is still easy to
solder manually if you'll buy a 0.38 mm flux solder, a no clean #951
kester flux pen
and you already have a good chinese hot air rework station ($150 to $400 in US).

good=accurate air flow and temperature reglages

In my opinion 0402 and 0603 is not for home prototyping and require
both a good magnifier lense.

About packages, anything else smaller than SO or SM (1.27mm or 0.5mm
pitch) is not recommendend for home prototyping even it's possible if
you're young and
pacient...

greetings,
Vasile



{Quote hidden}

> -

2006\05\15@094012 by David VanHorn

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>
> About packages, anything else smaller than SO or SM (1.27mm or 0.5mm
> pitch) is not recommendend for home prototyping even it's possible if
> you're young and
> pacient...


0201 is definitely interesting, as I found out when I ordered slightly the
wrong part number.


--
> Feel the power of the dark side!  Atmel AVR

2006\05\15@102047 by Xiaofan Chen

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On 5/15/06, Vasile Surducan <.....piclist9KILLspamspam.....gmail.com> wrote:
>
> In my opinion 0402 and 0603 is not for home prototyping and require
> both a good magnifier lense.
>
> About packages, anything else smaller than SO or SM (1.27mm or 0.5mm
> pitch) is not recommendend for home prototyping even it's possible if
> you're young and pacient...

I think 0603 is pretty easy to solder. I initially feel that 0402 is a bit
small but now it is not so difficult as well. I have not tried 0201.

SO is easy. SSOP is slightly more difficult but still managable. However
I would not like to solder a QFN even with a hot air rework station...

Regards,
Xiaofan

2006\05\15@111900 by Dominic Stratten

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----- Original Message -----
From: "David VanHorn" <EraseMEdvanhornspam_OUTspamTakeThisOuTmicrobrix.com>
To: "Microcontroller discussion list - Public." <piclistspamspam_OUTmit.edu>
Sent: Monday, May 15, 2006 2:40 PM
Subject: Re: [EE]Surface Mount Devices


{Quote hidden}

> --

2006\05\15@112440 by John Nall

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Xiaofan Chen wrote:
> > SO is easy. SSOP is slightly more difficult but still managable. However
> I would not like to solder a QFN even with a hot air rework station...
>  
.
I haven't tried any of  the SMD stuff, but a goodly number of the
interesting QRP (amateur radio -- very low power) projects use the
parts, so may have to wade in.
.
Just FYI, there are some adapter boards available for working with SMD
parts, some which can be found at the website  
http://www.futurlec.com/SMD_Adapters.shtml.  I haven't tried any of
those yet, either, but they might make the transition a bit easier.  
Especially for us old guys, with poor eyesight and unsteady hands.
.
John

2006\05\15@114602 by Wouter van Ooijen

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> Just FYI, there are some adapter boards available for working
> with SMD
> parts, some which can be found at the website  
> http://www.futurlec.com/SMD_Adapters.shtml.  I haven't tried any of
> those yet, either, but they might make the transition a bit easier.  
> Especially for us old guys, with poor eyesight and unsteady hands.

Do they? You still have to solder your SMD part onto the adapter board!

But they do allow you to use SMD parts on solderless breadboards.

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: http://www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: http://www.voti.nl/hvu


2006\05\15@114743 by PicDude

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On Monday 15 May 2006 09:20, Xiaofan Chen wrote:
> On 5/15/06, Vasile Surducan <@spam@piclist9KILLspamspamgmail.com> wrote:
> > In my opinion 0402 and 0603 is not for home prototyping and require
> > both a good magnifier lense.
> >
> > About packages, anything else smaller than SO or SM (1.27mm or 0.5mm
> > pitch) is not recommendend for home prototyping even it's possible if
> > you're young and pacient...
>
> I think 0603 is pretty easy to solder. I initially feel that 0402 is a bit
> small but now it is not so difficult as well. I have not tried 0201.
>
> SO is easy. SSOP is slightly more difficult but still managable. However
> I would not like to solder a QFN even with a hot air rework station...
>
> Regards,
> Xiaofan


I now do 0805's and SSOP's regularly, and I still use a generic weller iron
with a small tip and .020" solder.  With SSOP's though, it's easy to get
solder bridges to other traces/vias under the chip near the pins, so when I
move any other traces/vias accordingly when I lay out the board.

Cheers,
-Neil.

2006\05\15@130606 by Vasile Surducan

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On 5/15/06, Xiaofan Chen <KILLspamxiaofancKILLspamspamgmail.com> wrote:
> On 5/15/06, Vasile Surducan <RemoveMEpiclist9TakeThisOuTspamgmail.com> wrote:
> >
> > In my opinion 0402 and 0603 is not for home prototyping and require
> > both a good magnifier lense.
> >
> > About packages, anything else smaller than SO or SM (1.27mm or 0.5mm
> > pitch) is not recommendend for home prototyping even it's possible if
> > you're young and pacient...
>
> I think 0603 is pretty easy to solder. I initially feel that 0402 is a bit
> small but now it is not so difficult as well. I have not tried 0201.
>
> SO is easy. SSOP is slightly more difficult but still managable. However
> I would not like to solder a QFN even with a hot air rework station...

I did. It's not so difficult if everything it's clean and the solder
has low Pb content.
Much complicated if it's a TQFN with ground exposed pad... working at 5Ghz.
But the ask was about "prototyping". Prototyping means various
replacements untill works ok. Definitely QFN is not suited for
"prototyping".
:)

Vasile

>
> Regards,
> Xiaofan
>
> -

2006\05\15@130653 by John Nall

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Wouter van Ooijen wrote:
> > Do they? You still have to solder your SMD part onto the adapter board!
>
> But they do allow you to use SMD parts on solderless breadboards
.
Yeah, thanks for the tip.  I went back and looked further and, of
course, you are right.  However, I can still see where they might be
helpful.

2006\05\15@134621 by w d myrick

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John,  Do not let age stop you.  I am 74
and have very
bad eyes and I have used  SM parts for
some time.
You will need al the SM tools and a good
microscope
and you should do OK.

Derward Myrick


{Original Message removed}

2006\05\15@172628 by Peter

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On Mon, 15 May 2006, David VanHorn wrote:

>>
>> About packages, anything else smaller than SO or SM (1.27mm or 0.5mm
>> pitch) is not recommendend for home prototyping even it's possible if
>> you're young and
>> pacient...
>
>
> 0201 is definitely interesting, as I found out when I ordered slightly the
> wrong part number.

Didn't you send back the 'bag of seeds sent by mistake to this address'
?

P.

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