Sharp IV-C35M Manuel d'utilisateur télécharger pdf (Page 4)

C35 Application Note

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RoHS Compliant www.semileds.com

C35 Application Note V1.3

Subject to change without notice

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RecommendedCleaningandCoatingMethods

C35LEDCleaning

C35was100%cleanedbeforeshipping.Innormaluseit does not needtobecleanedagainbeforeSMT.In

thecasewhereaminimalamountofdirtanddustparticlesarepresentduringshipping&use,asuitable

cleaningsolutioncanbeappliedtothelenssurface.

1. Duringhandling,

keeptheenvironmentclean.

2. Gentlyswabthelensusingalint‐freeswab.

3. Ifneeded,usealint‐freeswabandIPA(isopropylalcohol)togentlyremovedirtfromthelens

surface.DonotuseothersolventsastheymaydirectlyreactwiththeLEDlens.

4. Do

notuseultrasoniccleaningsincethismaydamagetheLED.

5. Donotpressorapplypressureonthelens.

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RecommendedConformalCoatings

SemiLEDshasfoundthatthefollowingconformalcoatingsaresafetousewithC35products.Conformal

coatingshouldnotbeapplieddirectlytoorovertheLEDemittingareaasitmayhindertheLED’soptical

performanceandreliability.

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‧ DowCorning3140

‧ DowCorning3‐1953

‧ SIL‐MoreSCE3990

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Harmfulchemicals

SemiLEDshasfoundthefollowingchemicalstobeharmfultoC35.Thefumesfromevensmallamountsof

thesechemicalsmaydamagetheLEDs.Figure3showsthecolorshiftaftersolventpenetratingintothelens.

Sometimes,thephenomenawillrecoverafterbakingtheLEDforawhileasinFigure

4.

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Figure3.ColorshiftduetosolventpenetratinginsidetheLED

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