Electronics Forum: annular rings for unsupported holes (5)

Need advise on regarding Vias

Electronics Forum | Mon Dec 13 00:48:33 EST 1999 | armin

Hi All I have a 0.7 mm diameter hole for vias, what�s the minimum annular ring for this hole diameter? What�s the term unsupported and supported holes refer to in IPC-2221 9.1.2 Annular Ring Requirements? I have a proto-type PCB (designed by our R&

Re: Use of solder paste for leaded thru hole parts????

Electronics Forum | Tue Jun 30 18:37:19 EDT 1998 | Earl Moon

| Hi all . | Thanks to Ryan, Brian , Justin and Dave for the timely help earlier. | I would appreciate if somebody could help me in the stated issue: | I am trying to to place one thru hole 20 pin connector along with the SMT components by paste pri

Industry News: annular rings for unsupported holes (1)

What's usage of Via tenting for PCB design?

Industry News | 2019-11-05 22:07:01.0

Tenting a via refers to covering via with soldermask to enclose or skin over the opening. A via is a hole drilled into the PCB that allows multiple layers on the PCB to be connected to each other. A non tented via is just a via that is not covered with the soldermask layer. Leaving these vias exposed or covered has pros and cons depending on the your design and manufacturing requirements.

Headpcb

Training Courses: annular rings for unsupported holes (1)

IPC-A-600 Acceptability of Printed Boards Training and Certification Program

Training Courses | ON DEMAND | | IPC-600 Trainer (CIT)

The Certified IPC-600 Trainer (CIT) courses recognize individuals as qualified trainers in the area of quality assurance of bare printed circuit boards and prepare them to deliver Certified IPC-600 (CIS) training.

PIEK International Education Centre

Express Newsletter: annular rings for unsupported holes (345)

SMT Express, Volume 2, Issue No. 3 - from SMTnet.com

SMT Express, Volume 2, Issue No. 3 - from SMTnet.com Volume 2, Issue No. 3 Thursday, March 16, 2000 Featured Article Return to Front Page Stencil Design for Mixed Technology Through-hole / SMT Placement and Reflow by William E. Coleman, Photo

Partner Websites: annular rings for unsupported holes (44)


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