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FLEXIBLE PCB


The holes are about 5 mils in diameter

Ultrasonic Frequencies used. 40/120 khz

Temperature 50 degrees C

Alkaline Cleaner

Cleaning time 2 hours

Power: AC 120 50/60 Hz

The flexible printed circuit board was abour 6" x 8" x 1/8" Each board contained hundreds of holes. The first boards we cleaned were about 50% full of debris we believed was caused by the particles generated by laser cutting. They required counting of the debris left. Normally it took 5-6 runs to get 100% cleaned.