Electronics Forum | Thu Feb 05 05:27:55 EST 2004 | dszeto
We have recent customer asking for PCB's PTH hole size related to soldered wire AWG 18-26. Please kindly advise any international standard for captioned issue. Thanks!
Electronics Forum | Thu Feb 05 08:39:16 EST 2004 | davef
IPC-2222 - Sectional Design Standard For Printed Board For Organic Printed Boards, Table 9-3 � Plated Through Hole Diameter To Lead Diameter Relationships will give you the standard information you require.
Electronics Forum | Wed Apr 10 11:46:28 EDT 2002 | mlovett
I would like to know the Stated Specification for PTH size tolerances. Or is there a generalised acceptable limit?. We have some PCB's with hole sizes that I consider to be way off what I would deem acceptable, ie Finished hole size should be 0.89mm
Electronics Forum | Mon Sep 09 10:50:24 EDT 2002 | bmulcahy
Hi MK, It not really as simple as changing from one to the other. VIA hole, PTH hole sizes may need to be changed. Really the designer should re-evalaute the board before changing. Also remember your soldering profiles, both reflow and wave (if appl
Electronics Forum | Tue Nov 19 10:39:11 EST 2019 | cmchoue
Hi Experts, If SMT Type DDR DIMM Socket , PTH Pin size:2.5mm , PCB hole 2.45mm, Could this design can use placement machine to put DIMM on PCB? How to overcome the interference between PTH pin and PCB hole? Thank you Best regards James
Electronics Forum | Mon Sep 09 21:02:30 EDT 2002 | davef
Bernard Interesting point. Please help us better understand: * Why do 'VIA hole, PTH hole sizes may need to be changed', aside from the obvious with hole-to-lead clearance? * What should the designer 're-evalaute the board before changing'? * What
Electronics Forum | Fri Jun 21 02:11:27 EDT 2019 | alanyang
Many aspects cause such problem, stencil windows and thickness, thermal pad and crowded PTH vias on PCB, the castellated pad size and pcb pad size. Do you have picture for reference?
Electronics Forum | Wed Apr 10 22:23:48 EDT 2002 | davef
IPC-6012A, 3.4.1 has words to the effect of: Hole size tolerance and hole pattern accuracy shall be as specified in the procurement documentation. Our fab says: Standard Drill Sizes Drill Number ||Hole Size ||Finished Hole Size 70 ||0.028" ||0.02
Electronics Forum | Wed Apr 10 22:24:30 EDT 2002 | davef
IPC-6012A, 3.4.1 has words to the effect of: Hole size tolerance and hole pattern accuracy shall be as specified in the procurement documentation. Our fab says: Standard Drill Sizes Drill Number ||Hole Size ||Finished Hole Size 70 ||0.028" ||0.02
Electronics Forum | Wed Oct 06 22:37:48 EDT 2010 | Jacki
Dear All I need to check the solder paste volume inside the PTH at our board,which size is 440x620 mm.So, I may need 3D inspection machine,AXI, not AOI.So, does anyone recommand me which 3D machine is suited to my PCB? Thanks in advance.
