Electronics > Beginners
Anyone Know What Name and Where to Get This BNC w Attachable PCB Adapter?
tautech:
--- Quote from: Mechatrommer on January 14, 2020, 03:55:21 am ---
--- Quote from: tautech on January 14, 2020, 02:56:03 am ---Still looking.....
--- End quote ---
as you see in 1st attachment of my last post, i have a bunch of that, one shown on the top picture among the 3 connectors. i think i've finished browsing for "bnc connector" in aliexpress without finding even close to what i expected in the OP. one of it maybe this, as an idea...
https://www.aliexpress.com/item/32322109573.html?spm=2114.12010612.8148356.44.519146acsMr8V6
it has that whitish silicone where we can lay and glue the pcb on, less wiggling i suspect, and the connector body seems easy to solder to a custom shaped metal to cover the pcb and coax cable. but unfortunately its the female bnc. if its male it will be nicer than the picture you showed. the one you showed, it needs more special shaped metal to fit in due to the 4 "spokes". maybe i can break those if no other better alternative. and find squared U (custom made) shape metal to solder together, my CNC is under construction, when completed? i dont know. ;D
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The thought I had was to use 2 of the mounting spokes to lay along the PCB and be soldered on like done with SMA connectors. I understand that might need a PCB respin and if you're using double sided solder 2 of the mounting spokes to the underside and bend the center pin down onto the PCB.
I'll look some more later .......
Interesting BNC male pull lug connector on Alibaba:
https://www.alibaba.com/product-detail/BNC-Plug-male-and-Antenna-RF_62340761342.html?spm=a2700.icbuShop.41413.27.679d5999ycX0ph
Looks like you could screw it to a PCB, maybe you can find it on Aliexpress from its description.
Mechatrommer:
--- Quote from: tautech on January 14, 2020, 04:29:49 am ---
--- Quote from: tautech on January 14, 2020, 02:56:03 am ---Still looking.....
--- End quote ---
The thought I had was to use 2 of the mounting spokes to lay along the PCB and be soldered on like done with SMA connectors. I understand that might need a PCB respin and if you're using double sided solder 2 of the mounting spokes to the underside and bend the center pin down onto the PCB.
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no need respin because that was one of the plan, to solder both sides of pcb to the spokes, so its perfectly fine. the problem is when i try to figure out 3d printed object how to mate to the connector's body, it has very little contact to glue or to push in together, another 2 spokes at the top and bottom will make things more complicated. i printed one enclosure for that but doesnt stick very well. the threaded connector pictured above with 3d printed parts is better since i can hold tightly one plastic part with the nut, and another part will just slide in firmly, but the problem is, its kind of ugly and longer. the connector with 4 spokes is shorter hence better since the point i solder the pcb is directly after the bnc ring, so i make neater appearance to the probe end, but not without the mentioned problem. maybe i try to break the top and bottom spoke and see how it goes.
--- Quote from: tautech on January 14, 2020, 04:29:49 am ---Interesting BNC male pull lug connector on Alibaba:
https://www.alibaba.com/product-detail/BNC-Plug-male-and-Antenna-RF_62340761342.html?spm=a2700.icbuShop.41413.27.679d5999ycX0ph
Looks like you could screw it to a PCB, maybe you can find it on Aliexpress from its description.
--- End quote ---
yeah maybe another option to try. the metal cylinder enclosing the dialetric can be used to mate the plastic or metal part enclosure, but it looks similarly long with the threaded version that i have. thanks.
Mechatrommer:
--- Quote from: BravoV on January 14, 2020, 04:08:43 am ---Or if your PCB and the components can be squeezed into really small, other alternative, those cheap metal BNC 50 Ohm feed thru terminators.
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good idea, i will search again for the "50 Ohm feed thru terminators" i have one feed through modded from an attenuator, can fit in a small pcb. the problem is, its quite heavy metal and drilling two holes on the side for variable capacitor and trimpot adjustment can be difficult. its weight can snap the 1.13mm OD coax to pieces. i'll try the lighter version. i saw a neater version of this attenuator but i KIV due to the female BNC end that i have to cut and mod if i choose that version... this https://www.aliexpress.com/item/32843747781.html?spm=a2g0o.productlist.0.0.3fdd17364HQAe8&algo_pvid=bbf64dad-d1ac-4757-ade6-787e7f790242&algo_expid=bbf64dad-d1ac-4757-ade6-787e7f790242-0&btsid=63f5cf92-23b7-418f-9823-da11707d7dae&ws_ab_test=searchweb0_0,searchweb201602_9,searchweb201603_53 but $6 is on the high side figure of a price. or maybe i just use that as is, only to put my pcb inside, drill holes on the plastic enclosure, so the probe part is separated only consisting BNC connector directly to coax. but a probe with few parts is less elegant imho, i'll keep the idea as a last resort. there are many alternatives already, but i'm looking for better, neater and more compact solution. this is for my compact probe project, small head, small cable, and the connector should be as small as possible too, i even name the project as "neat probe" ::) for hand free probing fwiw.
daqq:
Maybe this:
https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=8681
https://www.crystek.com/home/enclosure/enclosuredetail.aspx?pn=BNC-KIT-2.6MF
edit:
A tad on the pricey side :)
https://www.digikey.com/products/en?WT.z_cid=sp_744_0310_buynow&site=us&lang=en&mpart=BNC-KIT-2.6MF
ogden:
Why dont you check Alibaba listings of scope probe offerings, sort out some actual manufacturers and ask them about connector?
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