Pcb manufacturing

PCB manufacturing

1. PRIVILEGED AND CONFIDENTIAL MATERIALS

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Richard Puthota
Cookson India Ltd
December 2010

2. PRIVILEGED AND CONFIDENTIAL MATERIALS
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4. PRIVILEGED AND CONFIDENTIAL MATERIALS
UNITS MICRO INCHES MILS INCHES ANGSTROMS MICRONS MM
MICRO INCH 1 0.001 0.000001 250 0.025 0.000025
MICRON 40 0.04 0.00004 10000 1 0.001
MIL 1000 1 0.001 250000 25 0.025
MM 40,000 40 0.0410
7
1000 1
MEASURING UNITS FOLLOWED IN PCB INDUSTRY
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5. PRIVILEGED AND CONFIDENTIAL MATERIALS
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6. PRIVILEGED AND CONFIDENTIAL MATERIALS
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7. PRIVILEGED AND CONFIDENTIAL MATERIALS
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Sales CAD /CAM Engineering Plotting Inner layer
Processing
Dev/Etch/Strip
ML Lamination
Drilling DeSmear
Electroless Cu

8. PRIVILEGED AND CONFIDENTIAL MATERIALS
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Optional
Outer-layer
Processing
Electrolytic Cu
Strip / Etch /
Strip Tin
Solder mask / LP Hot-Air Leveling
Immersion Gold NC Routing V - Scoring 100% E-Test Final Q/C
Shipping

9. PRIVILEGED AND CONFIDENTIAL MATERIALS
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26. PRIVILEGED AND CONFIDENTIAL MATERIALS
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27. PRIVILEGED AND CONFIDENTIAL MATERIALS
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28. PRIVILEGED AND CONFIDENTIAL MATERIALS
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29. PRIVILEGED AND CONFIDENTIAL MATERIALS
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Courtesy : Multek

30. PRIVILEGED AND CONFIDENTIAL MATERIALS
Etch & Strip Photo Resist
Courtesy : Multek

31. PRIVILEGED AND CONFIDENTIAL MATERIALS
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Courtesy : Multek

32. PRIVILEGED AND CONFIDENTIAL MATERIALS
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Courtesy : Multek

33. PRIVILEGED AND CONFIDENTIAL MATERIALS
2 g
Courtesy : Multek

34. PRIVILEGED AND CONFIDENTIAL MATERIALS
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35. PRIVILEGED AND CONFIDENTIAL MATERIALS
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36. PRIVILEGED AND CONFIDENTIAL MATERIALS
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37. PRIVILEGED AND CONFIDENTIAL MATERIALS
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38. PRIVILEGED AND CONFIDENTIAL MATERIALS
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39. PRIVILEGED AND CONFIDENTIAL MATERIALS
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40. PRIVILEGED AND CONFIDENTIAL MATERIALS
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41. PRIVILEGED AND CONFIDENTIAL MATERIALS
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42. PRIVILEGED AND CONFIDENTIAL MATERIALS
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43. PRIVILEGED AND CONFIDENTIAL MATERIALS
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44. PRIVILEGED AND CONFIDENTIAL MATERIALS
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45. PRIVILEGED AND CONFIDENTIAL MATERIALS
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46. PRIVILEGED AND CONFIDENTIAL MATERIALS
3*
Air knife
off-set
Solder
PCB
Clamp to
hold PCB

47. PRIVILEGED AND CONFIDENTIAL MATERIALS
316))*-AL
Improved gasket sealing
during solder paste
printing on fine features.
Laminate
Stencil
Sn/Pb Lead-
Free
Laminate
Stencil

48. PRIVILEGED AND CONFIDENTIAL MATERIALS
Conveyorized Dip
Module
Manifold
PCB
OR
Coating Chemistry Sump
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49. PRIVILEGED AND CONFIDENTIAL MATERIALS
Courtesy : Enthone, Cookson Electronics

50. PRIVILEGED AND CONFIDENTIAL MATERIALS
ENTEK
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HASLFSTÔÔÔÔ
Immersion Sn
Ni-AuAlphaLevelÔÔÔÔ
Immersion Ag
Cost
Lowest
Medium
Medium
Highest
Low
Fine PitchExcellent
Poor
Excellent Good Excellent
Multi Pass
Medium
Excellent
Good Good Good
Wave OKVariable
Excellent
Good
Poor
Good
Ease of Mfr
Easy
Difficult
Medium
Difficult
Easy
Warping
Low
High
Low Low Low
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51. PRIVILEGED AND CONFIDENTIAL MATERIALS
ATTRIBUTES
1 1 10 9
Wire Bondability
Wire Bondable = 10;
Can't wire bond = 1
1 1 1
10
10
9
9 7
10
10
8
8 2
10
2
6
5 10
10
2
6
1
10
1
10
10
10
2
6
10
10
7
10
7
10
9
10
5
10 1 3 4 10 10 10
CO-PLANARITY(FLATNESS)
Flat Pads = 10; Non Planar Pads = 1
Risk of removing Protective Coat
during rework
Not easy to
remove = 10; Easy to remove = 1
Solderability at Wave Solde ( No
prior Reflow)
Highly Solderable = 10; Least = 1
Solderability at Wave Solder (after 2-
3 reflows using no clean flux)
Highly Solderable = 10; Least = 1
Cost Of PCB Fabrication
Lowest Cost = 10; Highest = 1
Pin Testability of Bare Board
Most Pin Testable = 10; Least = 1
Shelf - Life
Longest = 10; Shortest = 1
Ionic Cleanliness
Least Contamination =10; Most = 1
PROPERTY OF COPPER COATING
ALTERNATIVE COATINGS
PROPERTY COMPARISON OF ALTERNATIVE COPPER PROTECTIVE COATINGS
9 6 3 69
Amidazole/
Benzimidazole
Immersion
Bismuth
Immersion
Silver
Hot Air Solder
Leveled
Rosin / Resin
Coating
Benzo -
Triazole
1 5 10
Electroless
Nickel/Gold
5 8 10 7 7 1
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52. PRIVILEGED AND CONFIDENTIAL MATERIALS
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53. PRIVILEGED AND CONFIDENTIAL MATERIALS
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54. PRIVILEGED AND CONFIDENTIAL MATERIALS
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55. PRIVILEGED AND CONFIDENTIAL MATERIALS
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56. PRIVILEGED AND CONFIDENTIAL MATERIALS
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Courtesy : Multek

57. PRIVILEGED AND CONFIDENTIAL MATERIALS
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Courtesy : Multek

58. PRIVILEGED AND CONFIDENTIAL MATERIALS
Electrical testing checks the boards for
any open or short type defects, before
shipping to the customer.
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Courtesy : Multek

59. PRIVILEGED AND CONFIDENTIAL MATERIALS
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