7/27/2019 Component Minimum Distance Checklist

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Component to Component Minimum Spacing ChecklistTermsofusingthisarticleThisarticleisprimarilyforinternaluseinQuickteckPCBdesignteam.Nowwedecidedto

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Details1. Keepatlease2.5mm(100mil)betweenQFPorSOPcomponents.

2. Keepatleast1.5mm(60mil)betweenQFPorSOPcomponentstochip,DIPorSOTcomponents.

3. ForthesereflowsolderPCBdesign,pleasekeepatlease0.3mm(12mil)betweenchip,DIPorSOTcomponents.

Quick-teck EN-00414

Quick-teck Internal Technical Note http://www.quick-teck.co.uk

7/27/2019 Component Minimum Distance Checklist

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4. ForthesewavesolderPCBdesign,keepatleast1.2mm(47mil)(PCBmovingaxis)and0.8mm(32mil)(verticalaxis)betweenchip,DIPorSOTparts.Forhighprofile

chipcomponents(liketantalumcapacitor),increasethedistanceto2.5mm(100mil).

5. Keepatleast5mm(200mil)betweenBGAandothercomponents.PlacedecouplingcapacitorscloseonbottomsideandkeepasmuchaspossibletoVCCpinonactive

components.

Quick-teck EN-00414

Quick-teck Internal Technical Note http://www.quick-teck.co.uk

7/27/2019 Component Minimum Distance Checklist

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6. Keepatleast3mm(120mil)betweenPLCCsocketandothercomponents.PLCCsocketshouldbealwaysontopside(componentside).

7. ForSMTconnectors,keeptheheightoftheconnectorastheminimumclearancetotheothercomponents.Forexample,iftheconnectoris3.5mmhigh,thenplease

keepatlease3.5mmbetweenthisconnectortoadjacentcomponents.

8. Leaveatlease2mm(80mil)fromcomponenttotheshieldsolderingpad(metalshieldisquitenormalusedinwirelessproductdesigns).

Quick-teck EN-00414

Quick-teck Internal Technical Note http://www.quick-teck.co.uk

7/27/2019 Component Minimum Distance Checklist

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9. Leaveatlease1.5mm(60mil)fromthecomponenttotheboardedge.

10.Componentsplacedonthesolderside(bottomside)shouldkeepatlease5mm(200mil)awayfromtheleadsofPTHcomponents.

Quick-teck EN-00414

Quick-teck Internal Technical Note http://www.quick-teck.co.uk