Timeline for PCB design: vcc plane and via limitations
Current License: CC BY-SA 3.0
11 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 25, 2017 at 8:40 | vote | accept | Alphapage | ||
| Feb 25, 2017 at 0:28 | comment | added | Sam | More vias = more current carrying capacity = better thermal conductivity. Any by the same measure, bigger vias = more current carrying capacity = better thermal conductivity. 0.1mm trace and space and 0.2mm drills is not your average PCB fab (and 0.2mm holes is borderline laser drilling), that's high-end stuff, and high-end = expensive. Just because that's the minimum that they can manage, doesn't mean you can't use 0.15 trace and space with 0.3mm drills (which is the most common rules for the vast majority of cheap-as Chinese board houses which are usually 10x cheaper than elsewhere). | |
| Feb 24, 2017 at 18:45 | comment | added | Alphapage | OK, so the more I add vias the more A I can get (or I can't loose) ? Am I right ? | |
| Feb 24, 2017 at 18:36 | comment | added | The Photon | Or use 0.25 or 0.3 mm vias for these locations. | |
| Feb 24, 2017 at 18:30 | comment | added | Alphapage | I made a bad calculation !! But do I have to add at least 2 vias to get a 2A or more on vcc plane ? | |
| Feb 24, 2017 at 18:03 | answer | added | analogsystemsrf | timeline score: 1 | |
| Feb 24, 2017 at 16:53 | comment | added | The Photon | FWIW, the Saturn tool suggests 1.8 A limit for a 0.2 mm drill with 35 um plating. | |
| Feb 24, 2017 at 16:52 | answer | added | The Photon | timeline score: 3 | |
| Feb 24, 2017 at 16:51 | comment | added | Olin Lathrop | Even tiny vias can do a lot more than 500 uA! What diameter are your vias? | |
| Feb 24, 2017 at 16:49 | comment | added | The Photon | How did you calculate the via ampacity? Also, nothing prevents you using larger vias in a board with a minimum via size spec of 0.2 mm. | |
| Feb 24, 2017 at 16:38 | history | asked | Alphapage | CC BY-SA 3.0 |