USB Type C (Mid Mount) Routing Guide

[sakibnaz]

Hi there. For my project I need to use the GCT USB4050 Mid Mount Hybrid (SMT+THT) Type USB Type C Connector.

USB4050 - USB 3.2 Gen 2 Connector Type C Horizontal Receptacle (socket)

USB4050 is a USB 3.2 Gen 2 Connector type c C type receptacle (socket) with 24 contacts for hybrid, horizontal Mid Mount. 3.42mm, with profile.

gct.co

But I am facing problem to Routing two Pads which are B5 and B8. I don't get any idea how to place the routing as Connector back side are full Cutout and the front side have other Pads and no room to palace trace. I am considering Trace width of 5mil and clearance of 5mil as its the most common and minimum capability of factory (such as JLCPCB).

Can anyone advise how to route?

Thanks.

 

[FvM]

Connecting full (Superspeed) USB 3.0 signal set or only Highspeed? Wiring with 5 mil technology is at the edge but might still work. The question is how many (shielded) signal layers you want to afford?

 

[sakibnaz]

Hi.

Its for USB 3.0 Supper Speed. Actually I need to route only B5 (CC2 Pin). B8 is not connected in my design. My Board is 4 Layer.

From B5 the 5mil Trace not passing in any direction ... either Board edge or middle of B4 and B6.

Thanks.

 

[FvM]

Right, 5 mils trace can fit between pads only on inner layers. Unconnected inner pads need to be removed or clipped respectively. 4 layer will hardly work for fully connected USB 3. I guess you need 3 signals layers shielded against each other and providing proper impedance matching. Hence 6 or 8 layer PCB.

JLPCB design trace to PTH rule is 0.33 mm, leaves room for a 5 mil trace between 0.8 mm spaced PTH pads.