Here are the stats from one of my boards: Layout Statistics: ----------------- Components: Placed 809 Unplaced 0 Total 809 Nets: W/Rats 955 No/Rats 5 Total 960 Pins: W/Rats 3122 No/Rats 1651 Unused 576 Unplaced 0 Total 5349 Equivalent ICs (1 pin = 1/14 EIC) 382 RatTs 0 Router Keepin (in) (-0.1500,-0.7500) by (5.2500,6.9550) Layout area (sq in) 41.6 Layout density (sq in/EIC) 0.109 Pin density (Pins/sq in) 128.560 Average ratlength (in) 1.4 Rat density (in/sq in) 73.429 Connection Statistics: W/Rats No/Rats Total ---------------------- ------ ------- ----- Connections 2167 1646 3813 Already Connected 2167 1646 3813 Missing Connections 0 0 0 Dangling Connections (See logfile) 0 Connection Completion 100.00% 100.00% 100.00% Manh Distance (inches) 3055.17 Etch Length (inches) 4340.56 91.40 4431.95 Number of vias 3559 1136 4695 Vias per Connection 1.64 0.69 1.23 Smd pins with attached clines 3902 This board had the following: Controlled impedance Parallelism control Tandem parallelism control (3 layer pairs) Matched length differential pairs Matched length star topology Matched length from2s Matched length nets The board was 60% hand routed and 40% autorouted. The layer count was 14 layers with 6 internal signal layers and only pin-escapes allowed on the outer layers. Time taken to do: 293.50 hours > From [log in to unmask] Fri Oct 2 12:53:22 1998 > From: [log in to unmask] > Original-From: [log in to unmask] > Date: Fri, 2 Oct 1998 14:48:50 -0500 > To: [log in to unmask], [log in to unmask] > Subject: Last PCB complexity > Mime-Version: 1.0 > Content-Type> : > text/plain> ; > charset=us-ascii> > Content-Transfer-Encoding: 7bit > Content-Md5: qqxqJaTdSjizVA8A6I/DMg== > Sender: [log in to unmask] > Content-Length: 718 > > All, > Just out of curiousity, what was the complexity level > of your last PCB ? Mine was: > > Overall size: 14.437" X 11.0236" (366.7 X 280.0 mm) > Number of Nets: 2,003 > Number of Holes: 9,888 > Lines / Space: .005 / .005 > Number of Layers: 12 > Number of components: 1050 > Number of Pins: 9518 > Time to complete: 16 actual working days (not including change / hold time) > > I thought this was pretty difficult, but I wanted to hear what everyone > else was doing out there. > > Thanks ! > > Karl > > > ------------------------------------- > URL: http://www.dacafe.com/USERSGROUPS/cctug > CCTUG Email Exploder (List cct_ug) > to Unsubscribe - send the message: "unsubscribe cct_ug" > to: "[log in to unmask]" > ################################################################ DesignerCouncil E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE DesignerCouncil <your full name> To unsubscribe: SIGNOFF DesignerCouncil ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################