Hello Group,
We are assessing a system that uses class Y1 capacitors for EMC filtering. Because of space constraints, they are laid down horizontally on the PCB. This is causing a problem (at least in my mind) where the capacitor body is now resting on top of the AC input trace. The side of the capacitor connected to PE is the side closest to the AC mains input trace. <https://unit3compliancecouk-my.sharepoint.com/:i:/g/personal/james_unit3com pliance_co_uk/EaXJSK9bMYRItCXbdutLJKsBORjTOA5_7Kh0bpPXDC5taw?e=aT7pfK> y-cap-body-insulation-question.jpg One of those pieces of received wisdom that has been passed down to me is that "the body of components is not considered to be insulating" for the purposes of assessing creepage and clearance. Common sense says "danger danger Will Robinson" and to change the PCB and/or to add some insulating material, but some technical back up would be welcome. All the best James James Pawson Managing Director & EMC Problem Solver Unit 3 Compliance Ltd EMC : Environmental & Vibration : Electrical Safety : CE & UKCA : Consultancy <http://www.unit3compliance.co.uk/> www.unit3compliance.co.uk | <mailto:ja...@unit3compliance.co.uk> ja...@unit3compliance.co.uk +44(0)1274 911747 | +44(0)7811 139957 2 Wellington Business Park, New Lane, Bradford, BD4 8AL Registered in England and Wales # 10574298 Office hours: Every morning my full attention is on consultancy, testing, and troubleshooting activities for our customers' projects. I'm available/contactable between 1300h to 1730h Mon/Tue/Thurs/Fri. For inquiries, bookings, and testing updates please send us an email on <mailto:he...@unit3compliance.co.uk> he...@unit3compliance.co.uk or call 01274 911747. Our lead times for testing and consultancy are typically 4-5 weeks. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to EMC-PSTC@LISTSERV.IEEE.ORG All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: msherma...@comcast.net Rick Linford at: linf...@ieee.org For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
