| 1)
Board Design |
2)
CAM |
3)
Photoplotting |
|
 |
|
| The PCB starts
as a schematic diagram. The diagram are then furter tranlate into
circuit pattern usuing PCB CAD. (Usuaully done by the customer) |
Cutomer then send the
data to PCB shop generate by CAD usually in Gerber format and
we checked for manufacturability and arranged in a suitable manner
for manufacture.
|
A laser photoplotter
is then used to produce the working film. The film usually consist
of the circuit, soldermask, and silkscreen layer. |
| 4)
Drilling |
5)
Electroless Plating |
6)
Image Transfer |
 |
 |
 |
| Holes are
drilled into the copper clad laminate using CNC drilling machines
(File Format : Excellon or ASIC) |
thin wall
of electroless copper is plated in the holes to provide electrical
continuity through the drilled holes. |
Photosensitive
film is laminated onto the PCB and the photographic pattern is exposed
and developed from the surface. |
| 7)
Electrolytic Plating |
8)
Etching |
9)Screen
Printing |
 |
 |
 |
| The circuitry
and holes are plated with 25-30 microns of copper and 10 microns
of tin lead plate. |
The copper
that is not required is etched off to leave the desired circuit. |
The solder
mask is screen printed onto the board as a dialetric to protect
and aid component placing |
| 10)
Hot Air Leveling |
11)
Profiling |
12)
Electrical Test |
 |
 |
 |
| The
copper areas of the pads and holes are coated with an even layer
of tin/lead to aid soldering. |
Boards
are either V-scored, routed, or punch according to customers requirement. |
All
boards are 100% visually inspected or electrical tested if cutomer
req |
|
|
Address :
71/15 Bangna Trad Road 52 Km. Takham Bangpakong, Chachoengsao 24130
Thailand
TEL : 66+38+573058
FAX : 66+38+573057
© COPYRIGHT AUTECH 2003
|
