interest checking,smt to pdip adapter boards

[digi01]

hello everyone,
by reason that smt ic is very common around world,I am going to make some adapter boards for myself.I wonder if anyone want them?If there are enough interest,I can make a group offer.
I am not interested in making 8 pins smt to pdip adapter,because it is easy to resolve by diyer.

here is my idea:
1,SSOP 28 pins to PDIP adapter,it is very generic(example,TI's dac chips,buffer ic).
2,QRP 48 pins expanding adapter(example,qs7785)

any comment are welcome🙂

Zang

 

[AnthonyPT]

Hi Digi01,

Was hoping for some 14pin adaptors

like the Brown Dog 050101. So I could

do a TL074 upgrade that seem to be

in lots of places such as my active

crossover. Maybe as you do work on the

project you might be able to offer a

board mix with 8pin 14pin 28pin Soic to

dip converters. Like a rescue kit for

buyers of surface mount components who

still have dip board. Just break off the ones

you need to do the job. Six of each on each board.

End user does the connecter pins.

Good luck with whatever you decide to do.


AnthonyPT

 

[Vidalgo]

Try digikey , they sell some smd to dip/sip adapters.
SOIC to DIP for example , from Aries Electronics.
Better to search with their printed catalog.


Vitaly

 

[digi01]

to Vidalgo,
I have search digikey and the other resources,there are only photo boards but no adapter boards.Brown Dogs is a bit expensive for diy hobby.

to AnthonyPT,
thank you for your suggestion,I am planing the rescue kit now.and I have find a kind of golden plated pin at local,I will show you afternoon.

Zang

 

[AnthonyPT]

Hi Digi01

As you say; a lot of these commercial

adaptors are inclined to be expensive.

Cimmaron and Soundlabs group both have good info

and pictures of what is available.

www.soundlabsgroup.com.au/c/Brown_Dog/Brown+Dog.html

http://cimarrontechnology.com/index.asp

http://www.cimarrontechnology.com/pdf/bdfootprints.pdf

regards

AnthonyPT

 

[digi01]

here is a roughly idea.the rescue board(kit) include:
2 pcs of SO14 to 14-pin DIP adapter,
2 pcs of SO28 to 28-pin DIP adapter,
3 pcs of SO8 to 8-pin DIP adapter.

I have ask for local manufacturer,the price is around $4USD per kit.
Zang

 

[AnthonyPT]

Hi Digi01

I have just been thinking about some
other options. Adaptors for those
using OPA627s who want to use them in
a dual or quad application. So either
all surface to dip or maybe in a duo
dip to dip configuration. With bypass caps
on board for the power? Sounds good that
you have found some gold pins.

regards

AnthonyPT

 

[digi01]

P.S.
I have find this kind of pin for the adapter board.

 

[digi01]

I have just been thinking about some
other options. Adaptors for those
using OPA627s who want to use them in
a dual or quad application. So either
all surface to dip or maybe in a duo
dip to dip configuration. With bypass caps
on board for the power? Sounds good that
you have found some gold pins.

I have considered it.
the attached photo show my idea,the left is 2 single so8 to dual dip8 adapter,the right is 2 single dip to dual dip8 adapter.

rgds
Zang

 

[peranders]

Zang, I'll adwise you to increase the traces a bit, 20-30 mils and add decoupling caps, 0805 types for the SO08->DIL08 adapter.

 

[peranders]

I have considered it.
the attached photo show my idea,the left is 2 single so8 to dual dip8 adapter,the right is 2 single dip to dual dip8 adapter.

One idea to make the pcb smaller is to have opamps on both sides

 

[AnthonyPT]

Hi Digi01

I'm impressed; looks great!



On a nice fibreglass board; a

real winner. Very nice pins too!

Regards

AnthonyPT

 

[digi01]

thank you P-A.
I am going about to increase the traces and add decoupling caps.


Zang

 

[AnthonyPT]

Hi Digi01

Per Anders thoughts sound good and

the bypass option is a wise one I think.

I can see you like practicing the virtue of excellence

in your designs anyway !

regards

AnthonyPT

 

[digi01]

One idea to make the pcb smaller is to have opamps on both sides

P-A,can you explain it?

 

[peranders]

2 SO08 -> DIL08

Place one opamp on the "component side" and the other one on the "solder side", then you will be able to decrease the pcb and make it not so wide which can be to a disadvantage. You may also choose a bit thinner pcb, like 1 mm. Remember also that you can decrease the pads for the connector in order to get more space for the opamps. Since you have plated holes you don't have to think of the pad size so much. Round 63 mils pads are OK but also down to 50 mils will work.

 

[digi01]

finished it!

 

[peranders]

Zang, avoid routing traces between the IC pads. It's unnecessary tight. You have space to draw the traces around the pads.

 

[AnthonyPT]

Hi Digi01

I found some old jpgs in my archives
on adaptors they may give you ideas.

regards

AnthonyPT

 

[digi01]

thank you AnthonyPT🙂

to P-A,
here are 2 modify version,so8 vertical placed and so8 horizontal placed with dip8.I think the horizontal is better.