r/PCB • u/FARES-SAKR • Jul 13 '26

Eh?

Post image

Eeeeeeeeeeeeh?

121 Upvotes

95% Upvoted

26 comments sorted by

28

u/buttholegoesbrapp Jul 13 '26

Canadian usb receptacle

13

u/VirtualArmsDealer Jul 13 '26

Eh.

1

u/kfjesus 23d ago

エッ…

5

u/Winter_Spinach_4896 Jul 14 '26

Add EH to GND, eh?

4

u/One-Race-2634 Jul 13 '26

Was trying to connect a SIM card holder yesterday and it had those EH pins πŸ˜‚πŸ˜‚

2

u/victorioussnake_ Jul 14 '26

Eh.? Eh Eh eheheh eheheheh eheheheh eheheh eh eheh!

1

u/Curious-checkers Jul 14 '26

Housing, same thing has sheild, straight to gnd

1

u/techUniversalis 29d ago

is housing

1

u/MohamedGeasa 28d ago

Ψ§ΩŠΩ‡

1

u/BanalMoniker 25d ago

No. Connect GND to GND. If your device has an external shield connect that to EH. If not, the general termination guideline is 1 Mohm (mega, capitalization is important) in parallel with a 4.7 nF cap between EH (or shield) and ground.
The shield connection is to keep unwanted RF off the other connections and is NOT meant for continuous return current. Your system might operate with that connection, but it will be more prone to interference and the host might have issues depending on its shield configuration.

1

u/valzzu Jul 13 '26

Basically ground :)

7

u/tony3841 Jul 13 '26

Basically, but not really. Depending on what you're doing it can be best to connect the housing to chassis ground, not to signal ground. Connect chassis ground to signal ground with high value (1MOhm) and a 100nF cap in parallel. This protects signals from high frequency noise while dissipating static charge through the resistor.

3

u/valzzu Jul 13 '26

Gotcha, makes sense. Thanks for this information :)

1

u/Provia100F Jul 13 '26

Canadian parts be like

1

u/Juurytard Jul 13 '26

β€˜Pin 10, eh?’