SBS - The best value in QMS software

PCB Creepage and Air Clearance on 8 Layer Boards

#1
We have a 8 layers board.
one of our inner layers is getting two power plane shapes -12v and +12v with a distance of 0.4mm between the shapes.
Are the Creepage and the air clearance defined for all layers of the board stack up or only for TOP and BOTTOM ? If the board passes Dialectic strength safety stress and still has 0.4mm shape to shape distance is it valid?
 
Elsmar Forum Sponsor
G

Gert Sorensen

#3
Another bump!

It has been a holiday season, but can someone help now that it is over?

Thank you very much!!
 
#4
Hi Nissim,

Sorry I missed this thread up till now.
(It may get more response in the IEC 60601 forum).

Your 0.4mm may be OK. (see clause 8.8.2a) If it forms a "Means of Protection" it would need to pass the appropriate dielectric strength test. And also, the it is considered to be insulation through a "cemented joint" which brings clause 8.9.3 into play (thermal cycling, humidity conditioning and more).

I found a presentation by UL that covers the test requirements for inside PCBs. it refers to IEC 60950 (the IT standard) but these requirements are now the same as in 60601.

(Thanks Mods for moving this thread)
 

Attachments

Last edited:
Thread starter Similar threads Forum Replies Date
N Creepage - Does a surface mount isolator body negate a PCB slot? IEC 60601 - Medical Electrical Equipment Safety Standards Series 6
A IEC 60601 Creepage and Clearance Requirements on PCB IEC 60601 - Medical Electrical Equipment Safety Standards Series 5
O Identifying KPI for AS9100 8.1.4 - Prevention of Counterfeit Parts - PCB assembly contract manufacturer AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 16
V PCB internal insulation treated as insulation formed by insulating compound IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
E AS9102 FAI - What makes a COTS modified? (PCB assemblies) AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 11
H Reliable Prototype PCB service manufacturer Manufacturing and Related Processes 3
B China GB4943.1 Safety Requirements - PCB Markings China Medical Device Regulations 0
MDD_QNA Medical Device PCB component change IEC 60601 - Medical Electrical Equipment Safety Standards Series 4
J Help!Rigid-flex PCB, huanyupcb supplier Service Industry Specific Topics 0
L Inspection of PCB provided by customer Misc. Quality Assurance and Business Systems Related Topics 2
alonFAI Finished PCB Final Visual Inspection Inspection, Prints (Drawings), Testing, Sampling and Related Topics 7
Q FAIR Requirement Flowdown to our PCB Supplier AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 3
A AS9100. 7.1.3 Configuration Management. PCB production. ECN. Revision Control. AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 4
J RoHS Components with Lead Exemptions (Capacitors on a PCB) RoHS, REACH, ELV, IMDS and Restricted Substances 11
L Baking of PCB's and Delamination Manufacturing and Related Processes 11
T Is IEC 61010 needed for a populated PCB within a unit? CE Marking (Conformité Européene) / CB Scheme 2
B The best way to manage changes to the documentation of PCB files & BOM Inspection, Prints (Drawings), Testing, Sampling and Related Topics 8
A Contact Resistance issue - Gold plating on PCB Manufacturing and Related Processes 3
M IEC 60601-1 Single fault conditions of electronic PCB components IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
N Requirements for PCB Component Replacements in an IEC 60601-1 Compliant Device IEC 60601 - Medical Electrical Equipment Safety Standards Series 9
A Qualification and Acceptance Requirements of PCB's from Multiple Suppliers Inspection, Prints (Drawings), Testing, Sampling and Related Topics 2
JoCam PCB Functional Test Equipment Regulations and Requirements Occupational Health & Safety Management Standards 3
R DFMEA (Design FMEA) on Printed Circuit Boards (PCB's) FMEA and Control Plans 2
V HALT vs. HASS (acronyms) - Tests for PCB and Cable Assemblies Inspection, Prints (Drawings), Testing, Sampling and Related Topics 1
T Does the Layout Design of a PCB fall under clause 7.3 in ISO 9001 Design and Development of Products and Processes 7
C Any CQI-Special Process related to Printed Circuit Boards (PCB)? IATF 16949 - Automotive Quality Systems Standard 1
L MSA in Automatic Equipment - PCB Assembly - Help! Quality Tools, Improvement and Analysis 6
S PCB Handling Requirements - What to do if we drop a PCB during the assembly Manufacturing and Related Processes 4
B Manual Inspection Tools for PCB (Populated Printed Circuit Boards) Inspection, Prints (Drawings), Testing, Sampling and Related Topics 11
E Ethernet Isolation Transformer for Medical Grade PCB IEC 60601 - Medical Electrical Equipment Safety Standards Series 9
I Material Certificates for a PCB Carbon Print Product Quality Manager and Management Related Issues 2
L Sample of Solder supplied with PCB by supplier - What is this sample for? Manufacturing and Related Processes 9
M Importance of Polarized Light for PWB/PCB Inspection Inspection, Prints (Drawings), Testing, Sampling and Related Topics 1
Q Workmanship on PCB (Printed Circuit Board) Assembly Manufacturing and Related Processes 14
N PCB (medical device) Surface Finish Selection. Manufacturing and Related Processes 2
P PCB (Printed Circuit Board)/Electronics Inspection Training? IPC-A-610? Career and Occupation Discussions 10
A Scrap vs. Rework Classification - Scraping the resistor or reworking the PCB board? Quality Tools, Improvement and Analysis 10
R Sample Size for PCB used in a Medical Device Inspection, Prints (Drawings), Testing, Sampling and Related Topics 6
C CE Marking for PCB Components for Laser Printer Cartridges CE Marking (Conformité Européene) / CB Scheme 5
V PPAP for electronics - What do we have to require for PCB compare to mechanical parts APQP and PPAP 4
A PCB (Printed Circuit Board) Assembly Inspection Checklist Inspection, Prints (Drawings), Testing, Sampling and Related Topics 5
Q FAI Help - Subcontracting out all manufactured items (PCB & machined parts) AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 4
C Only appearance and PCB are changed - Do we need to submit a new 510(k)? 21 CFR Part 820 - US FDA Quality System Regulations (QSR) 5
P Design an experiment to optimize the PCB solder reflow profile Design and Development of Products and Processes 4
J Auditing PCB (Printed Circuit Board) Assembly Lines - Fire And Safety Systems ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 21
R Facility setup for Substrate & PCB Visual Inspection Manufacturing and Related Processes 5
T Process Instructions via BOM for Subcontractor? (PCB Population) Manufacturing and Related Processes 2
C HMLV Lean Questions - PCB manufacturing industry Value Stream Mapping Lean in Manufacturing and Service Industries 3
R Bulk Material PPAP for PCB shop? What would be considered as bulk material? APQP and PPAP 5
D Need help on correct material composition of solder resist or solder mask in PCB for APQP and PPAP 1

Similar threads

Top Bottom