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Electronics => RF, Microwave, Ham Radio => Topic started by: ThomasDK on September 14, 2017, 09:37:42 pm

Title: Any experiences with OSH Park + SMA connectors?
Post by: ThomasDK on September 14, 2017, 09:37:42 pm
Just as a sanity check  :)

I'm designing a PLL board to be manufactured on OSH Park's 4 Layer service.

I need to get a 2.5 - 8 GHz signal onto the board through an aluminium wall.

I'm planning on using these connectors:

https://www.digikey.com/product-detail/en/cinch-connectivity-solutions-johnson/142-1701-201/J10153-ND/3587660 (https://www.digikey.com/product-detail/en/cinch-connectivity-solutions-johnson/142-1701-201/J10153-ND/3587660)

The connector pin width is 0.25 mm which fits nice on the 50R trace width on pcb (0.37 mm).

I'm assuming a standard taper transition should do the trick...

Any gotcha's I should be aware of?

Thanks,
Thomas
Title: Re: Any experiences with OSH Park + SMA connectors?
Post by: bjcuizon on September 16, 2017, 01:56:22 am
How about those right angle sma jacks which solder/mount directly to the board.
https://www.digikey.com/product-detail/en/rf-solutions/CON-SMA-EDGE-S/CON-SMA-EDGE-S-ND/5845767 (https://www.digikey.com/product-detail/en/rf-solutions/CON-SMA-EDGE-S/CON-SMA-EDGE-S-ND/5845767)
You can also find a bulkhead type like this one here:
https://www.digikey.com/product-detail/en/cinch-connectivity-solutions-johnson/142-0701-871/J610-ND/275095 (https://www.digikey.com/product-detail/en/cinch-connectivity-solutions-johnson/142-0701-871/J610-ND/275095)
The latter is a bit pricey though.  :-\
After that, you could then put a transmission line going to your board/device/component.
Like this one:
(http://media.digikey.com/Photos/Hittite%20Microwave%20Photos/121923-HMC669LP3.jpg)
Title: Re: Any experiences with OSH Park + SMA connectors?
Post by: ThomasDK on September 16, 2017, 03:46:37 pm
Quote from: bjcuizon on September 16, 2017, 01:56:22 am
How about those right angle sma jacks which solder/mount directly to the board.
https://www.digikey.com/product-detail/en/rf-solutions/CON-SMA-EDGE-S/CON-SMA-EDGE-S-ND/5845767 (https://www.digikey.com/product-detail/en/rf-solutions/CON-SMA-EDGE-S/CON-SMA-EDGE-S-ND/5845767)
You can also find a bulkhead type like this one here:
https://www.digikey.com/product-detail/en/cinch-connectivity-solutions-johnson/142-0701-871/J610-ND/275095 (https://www.digikey.com/product-detail/en/cinch-connectivity-solutions-johnson/142-0701-871/J610-ND/275095)

I know and use that type often. They are however a major pain to mount in a milled enclosure (the pcb is mounted flat in the enclosure base for heatsinking)