23 Dec
2017
23 Dec
'17
4:13 a.m.
On Dec 22, 2017, at 20:22, Luke Kenneth Casson Leighton lkcl@lkcl.net wrote:
On Fri, Dec 22, 2017 at 9:37 PM, Richard Wilbur richard.wilbur@gmail.com wrote:
The reason for dropping the ground plane under the connector pins (layer 1) from layer 2 to layer 5 is that the pins are so close to each other.
yyeahhh but so are the pins on the bottom layer ESD... which are covered by the layer 5 GND keepout hole... it was under the connector i was concerned about, with the VIAs on pins 4 10 and 16 (right-hand row of 9) being guard VIAs that are within 5mil of HTX1P/N and THXCP/N...
Those ground vias I'm not so worried about as they don't look so much different to the proximity of neighbouring connector pins.