Walking Through a Big PCB Factory in China | JLCPCB
This is how boards are made. Watch how PCB is manufactured and how boards are assembled. 
    
    
    
            Chapters:
        
        - 00:00What is this video about
 - 00:14Raw material cut to panels
 - 01:21Cleaning PCB
 - 02:59Photosensitive film applied (Building layers L2 & L3)
 - 03:56Exposing L2, L3
 - 05:39Developing L2, L3
 - 06:36Etching L2, L3
 - 07:27Removing photosensitive layer
 - 08:01AOI - Automated Optical Inspection
 - 08:55Making copper rougher
 - 10:43Adding prepreg
 - 11:19Adding copper sheets - Top and Bottom layer (L1, L4)
 - 13:01Baking PCBs, oven room
 - 14:54Splitting to two panels again
 - 17:06Adding aluminum sheet
 - 17:30Drilling
 - 19:39Plating
 - 20:52Electroless plating
 - 24:18Electroplating
 - 27:35Applying photosensitive film on L1 and L4
 - 28:19Exposing L1, L4
 - 30:15Developing L1, L4
 - 31:24Applying tin layer
 - 33:30Removing photosensitive layer from L1, L4
 - 34:38Etching L21 L4
 - 34:50Removing tin layer
 - 35:48AOI - Automated Optical Inspection
 - 36:35Optional electrical testing
 - 37:53Adding solder mask color
 - 40:06Exposing solder mask
 - 41:55Developing solder mask
 - 43:27Making silkscreen
 - 47:23Gold plating
 - 49:54Optical inspection, fixing, measuring
 - 51:08Electrical test
 - 52:13Milling - Removing PCB from big panel
 - 53:36V-Score
 - 55:34Packing PCB
 - 56:32Board Assembly
 - 57:34Inserting components into feeders
 - 58:51Stencil & Paste
 - 59:18Setting up component placement
 - 59:51Checking placement with AOI
 - 1:00:42Soldering - Going to owen
 - 1:01:15Checking after soldering
 - 1:01:56Assembling a board
 - 1:04:31Manual checking
 - 1:04:56Fitting through hole components
 - 1:05:58Wave soldering
 - 1:07:17Conformal coating
 - 1:07:57Packing assembled board
 - 1:08:303D printing
 - 1:11:02Done. Packing and shipping
 
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