Edge launch or horizontal male BNC jacks? - Page 1
Forum section: electronics / projects

author: TERRA Operative
author_rank: Super Contributor
timestamp: March 19, 2020, 01:38:28 pm
content: I'm looking to build some attenuators and such and I'm having trouble finding edge launch or horizontal PCB mount male BNC jacks.Can anyone point me in the direction to find a handful of these in 50 Ohm rating? Digikey and Mouser have a wide selection of female but basically no male..

author: thm_w
author_rank: Super Contributor
timestamp: March 19, 2020, 10:11:32 pm
content: Yes male right angle BNC is quite hard to find. I saw a few sources but nothing easy to buy, so I wrote them off for hobby use.If you need a lot then I'm sure you can get it from one of these suppliers:https://www.alibaba.com/product-detail/BNC-male-right-angle-for-PCB_60721985419.htmlhttps://www.elecbee.com/en/bnc-connector/1758-475-bnc-pcb-mount-right-angle-male-connector-through-hole.htmlOne option is to use SMA (edge or R/A) then a SMA to BNC adapter, as the adapters are commonly available. Another can be use panel mount + pigtail, or vertical bnc via a right angle adapter board.You can do a dual BNC/SMA right angle footprint, to populate with either connector type.

author: enut11
author_rank: Super Contributor
timestamp: March 20, 2020, 12:27:04 am
content: They are available on eBay for around $2 each

author: TERRA Operative
author_rank: Super Contributor
timestamp: March 20, 2020, 02:17:02 am
content: Quote from: thm_w on March 19, 2020, 10:11:32 pmYeah, I found those ones you linked, I just need a few, not 100 of them though.This one would be perfect if I could buy like 10 or so:https://www.alibaba.com/product-detail/RF-50ohms-ST-180-degree-edge_60634004992.htmlAnyone in for a group buy?I'm thinking of getting a vertical one to see if I can mount it horizontally by wedging the PCB between the legs. Thatmightwork ok.Quote from: enut11 on March 20, 2020, 12:27:04 amDo you have a link? I can only find vertical type.

author: thm_w
author_rank: Super Contributor
timestamp: March 23, 2020, 01:28:23 am
content: Quote from: TERRA Operative on March 20, 2020, 02:17:02 amI asked that seller and sample price is $1/pc + $30 shipping, 20pc max, bit too much for me.QuoteWould work if you just mounted it on one side of the PCB, with 3 SMD pads top and 2 SMD pads bottom. Use solder fillets on the bottom two pads to connect to the main body of the connector. Pads would have to be close to the edge of the board.The wedging idea would add a bit more strength but it might then not butt up flat against the PCB.

author: TERRA Operative
author_rank: Super Contributor
timestamp: March 23, 2020, 02:00:28 am
content: Yeah, I think I might give that a go. I think if I give it decent sized pads to get a good fillet, it should be strong enough.Those prices you found are a bit pricey for me too.

author: Whales
author_rank: Super Contributor
timestamp: March 23, 2020, 04:46:29 am
content: Complex idea: Two PCBs in parallel. Mount standard chassis-style BNC into a big hole on one board (perpendicular to the PCB, as if it were a chassis). Solder the center pin into a small hole on the other board.Interconnect between boards might not be nice, but you also might be able to get away without making a case if you put some small feet or a 3rd dummy PCB as an insulator on the bottom board.

author: ogden
author_rank: Super Contributor
timestamp: March 23, 2020, 04:51:32 am
content: Checkthis threadabout BNC attenuators - maybe you will get some idea (hint: SMA).

author: tautech
author_rank: Super Contributor
timestamp: March 23, 2020, 05:54:45 am
content: Quote from: ogden on March 23, 2020, 04:51:32 amYep SMA is the cost effective and practical solution:https://www.aliexpress.com/item/32912568609.html?spm=a2g0s.9042311.0.0.56164c4dvpBF7x