The document discusses laser depaneling of PCBs, emphasizing precision requirements to avoid component and circuit damage. It compares traditional methods with UV laser depanelizing, highlighting its advantages such as low energy levels and minimal thermal impact. The UV laser method allows for close placement of circuit components and improved cutting accuracy, offering a reliable choice for PCB test, rework, repair, and solder training.

1. Laser Depaneling of PCBs
May,2018
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2. Precision Requirements•
• No Component Damage
•
Smallaspossiblekeepout
Forcutout area
• No Circuit Damage
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3. Traditional Methods
Routing,Nibbling, V-Scoring
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4. Traditional Methods
Routing,Nibbling,Snapoff V-ScoredAreas
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5. CO2 Laser for Flex
•
•
•
Imparttoomuchheat
Toohighof energydensity
Wavelengthtoo absorbent
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6. Die Punching for Depaneling
Typical Flexcutwidths1mm- toolarge
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7. UV Laser De-Panelizing
•
•
•
Low Energy Levelsfor
MinimumThermal Impact.
30μmcutwidth
Smoothverticalcutedge
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8. UV Flexible in Cutting
•
•
•
•
•
•
Polyimides– Kapton™,
PET materials– Akaflex™,
Others- Pyralux™.
Rigid
Aluminum
Copper
Copper Adhesive
Insulator
Adhesive Copper
Insulator
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9. •
•
Circuitcomponentscanbeplacednearer the
edgeof thecircuit.
BetterPanelfill
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10. •
• Byrepeatedlygoingoverthesamecuttingtrackthinlayers
of thematerialwillberemoveduntilthebeamhascutall the
waythrough-ablation@ 355nm
Accuracy50um
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11. DistancefromCutCenterline(mm)
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MaxrecordedTempduringAblation(C)
25reps
5 reps
TempRiseinMaterialWhile Depaneling
17WUV,40KHz, 200mm/sec

12. •
•
•
•
50umspacebetweenboards
Accuracy25um(<1 mil)
Temperaturerisedepends on:
Beampower,beamspeed,focus,laser
pulserateandrepetitionrate
Addstopsbetweenpassestocoolmaterial
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13. UV Flexible in Cutting
and Solder Training & Tools www.sYour B ES T choice in PCB Test/ Rework/ Repair older.net

14. http://www.solder.net/
PCB Laser De-Panelizing