While i have a bunch of the 0.100" dual male pins for SOIC and TSSOP adapters (bot on EBAY), I also just keep the little "snippets" from resistors and fashion these to work with the adapters.
Pin 17 attached to ground or another power-plane for heat dissipation is a problem with adapters. I have used copper tape from 3M
Pin 17 attached to ground or another power-plane for heat dissipation is a problem with adapters. I have used copper tape from 3M
Here's the ticket----SOIC-8 to DIP-8 adapters for only ~27¢ apiece---a far cry from the $2.95 Brown Dog ones:
Boards: 30pcs SOP8 SO8 SOIC8 TSSOP8 MSOP8 to DIP8 Adapter PCB DIY Conveter Board new N65 | eBay
Pins: https://www.amazon.com/gp/product/B00Y80U9C2/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Boards: 30pcs SOP8 SO8 SOIC8 TSSOP8 MSOP8 to DIP8 Adapter PCB DIY Conveter Board new N65 | eBay
Pins: https://www.amazon.com/gp/product/B00Y80U9C2/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Found this old thread because I had the same problem. Ordered a SOIC8 to DIP8 part from Mouser, this one.
https://www.mouser.com/ProductDetail/chip-quik/pa0002/?qs=gjT6naH6P5IYqE1q16FC7w==&countrycode=US¤cycode=USD
And blindly soldered it together only to find out that the pins are too large to fit in the DIP8 socket for my opamp!
Here's a pic of the pins and the pcb.
At the top you can see the top of the pcb with the SOIC opamp in place. The way this adapter works is there are pins that solder to the other side of the pcb. A set of pins is next the pliers and another set is in the jaws of the pliers so you can see the bottom side of the pins. You solder the offset "L" shaped bottoms to the pcb.
If I could find pins with "L" on one side and straight on the other side that were small enough to fit into the DIP8 sockets, I could modify these to work.
gabo
https://www.mouser.com/ProductDetail/chip-quik/pa0002/?qs=gjT6naH6P5IYqE1q16FC7w==&countrycode=US¤cycode=USD
And blindly soldered it together only to find out that the pins are too large to fit in the DIP8 socket for my opamp!
Here's a pic of the pins and the pcb.
At the top you can see the top of the pcb with the SOIC opamp in place. The way this adapter works is there are pins that solder to the other side of the pcb. A set of pins is next the pliers and another set is in the jaws of the pliers so you can see the bottom side of the pins. You solder the offset "L" shaped bottoms to the pcb.
If I could find pins with "L" on one side and straight on the other side that were small enough to fit into the DIP8 sockets, I could modify these to work.
gabo
Yea I just have to find the right header pins. It's just a standard DIP socket with an opamp in it. The piece on the right in the following pic shows the socket with a standard DIP8 opamp sitting on top. The opamp just pushes down in the socket.
The desired opamp is a surface mount SOIC 8 format, it's just an OPA1612 which I only have in an SOIC form. This is an adapter that you solder the opamp on top and it has pins that match up with the socket. But the pins are too large to fit in the socket holes.
Here is a pic of the assembled piece on top of the socket, the holes match up but the pins are too large.
The datasheet for the socket shows a pin range of 0.015-0.025 fitting in the hole, here's the doc.
https://www.mouser.com/datasheet/2/273/MMMC_S_A0004813394_1-2556180.pdf
It's the same issue the OP had with his original post. He was looking for an adapter from SOIC8 to DIP8, but his solution is a bit different than mine because he didn't already purchase the adapter board.
If you had used the header pins I mentioned:
Pins: https://www.amazon.com/gp/product/B00Y80U9C2/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
along with the adapters:
Boards: 30pcs SOP8 SO8 SOIC8 TSSOP8 MSOP8 to DIP8 Adapter PCB DIY Conveter Board new N65 | eBay
you would find that the pins fit nicely in both the DIP-8 socket and the adapter PCB. No problem!!
Pins: https://www.amazon.com/gp/product/B00Y80U9C2/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
along with the adapters:
Boards: 30pcs SOP8 SO8 SOIC8 TSSOP8 MSOP8 to DIP8 Adapter PCB DIY Conveter Board new N65 | eBay
you would find that the pins fit nicely in both the DIP-8 socket and the adapter PCB. No problem!!
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Digikey sells this one. https://www.digikey.ca/en/products/...BHVTHE6glAHSRbe8Wt1AMCOCK_Jj1schoCFXwQAvD_BwE
That's the same exact part I ordered from Mouser and is in the pics above. The pins are too thick to fit in the sockets, it's made for breadboards.
I took my dremel tool and ground down the pins on mine and made it fit. I only had two of them to do and it worked pretty quickly. I was very surprised, I thought there would be plenty of options to convert SOIC opamps to fit into standard dip8 sockets, but it turns out it's more difficult than it should be.
gabo
Buy these and use pieces of cut off through hole parts lead or nails for a doll house or just #22AWG solid wire.
https://fr.aliexpress.com/item/1005001639405329.html
https://fr.aliexpress.com/item/1005001639405329.html
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Thanks Prasi, as always! I've used your boards before for my Baby Huey tube amp.
I'm sure those boards are terrific, but I wasn't willing to send out a gerber and have boards made for two opamps I wanted to try in a design. If there was a group buy, I might be interested in a few boards to have on hand in case the need every arises again.
gabo
These SMD Right-Angle pins from Preci-Dip are perfect! They're round and 0.47mm, compatible with any DIP socket.
Part# 350-10-104-00-106101, available at Mouser and others.
You save a lot of board real estate without the pins poking through. I was able to make this SO08 to DIP-8 adapter, without resorting to the usual trick of rotating the op-amp 90 degrees. This keeps the traces short, and I had room to add pads for a frequency compensation capacitor, and bypass capacitors.
Here they are on an adapter board I made to fit an op-amp plus a TI BUF634A to into a single DIP-8 socket.
(More about these adapter boards here.)
Part# 350-10-104-00-106101, available at Mouser and others.
You save a lot of board real estate without the pins poking through. I was able to make this SO08 to DIP-8 adapter, without resorting to the usual trick of rotating the op-amp 90 degrees. This keeps the traces short, and I had room to add pads for a frequency compensation capacitor, and bypass capacitors.
Here they are on an adapter board I made to fit an op-amp plus a TI BUF634A to into a single DIP-8 socket.
(More about these adapter boards here.)
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I always use imperial, as my software and still most components have those dimensions. even if they they dont, they still fit my pcb , e.g. 5.08mm versus 5 mm pitch, etc ...
pcb board houses ( manufactured in China) have all the drills, those in India (which I used for my GB) ask specifically what's needed.
Thanks, that looks like a good solution. I looked for some like that with the right angle pins, but couldn't find them. But since I had the other boards and had already mounted the opamp not knowing the pins weren't going to fit, then using a dremel worked a charm. But good info for future reference as I wouldn't want to make a habit of having to dremel the pins.
Ah, I understand. Maybe some day I'll use the gerber and make a batch just to have on hand for future use.
gabo