Hole Fill on Multilayer Boards

Inconsistent hole fill on through hole solders is the result of different factors.  Alpha’s knowledgeable technical service team is available for on-site operational analysis of process parameters, such as poor flux application or low pre-heat settings, to eliminate those problems.  Our experts can also help calculate the correct amount of solder material to be deposited for achievement of a reliable solder joint.

Alpha products that improve Hole Fill:

 

Alpha Solder Alloys

Use the chart below to determine which Alpha alloy is right for you. Simply align the type of assembly being made with the appropriate alloy.

 Assembly Type
 I II III IV
Simple, single sided, FR2 / CEM-1 laminates
Dual sided FR-4 w/ PTH's, 1.6mm thick, up to 4 inner copper layers, metallized pad finishes
Complex, up to 12 inner copper layers, OSP pad finishes, all processing in air
>2.4mm thick, >12 inner copper layers, large high heat capacity components
     
 SACX Plus 0807


 
 SAC alloys label for table
  1%+ flux solids, L0, pin testable
 
Flux Type
  SACX Plus 0307
    4%+ flux solids, L or M0, pin testable
 SnCX Plus™ 07
          4%+ flux solids, L or M0, moderately pin testable
            7%+ flux solids, L,M or H1, not pin testable
0ºC to 100ºC - standard profile cycles
0ºC to 100ºC - standard and shock profile cycles
- 25ºC to 125ºC - standard and shock profile cycles
- 45ºC to 125ºC - standard and shock profile cycles
   
Thermal Fatigue Resistance
 


 

Liquid Solder Flux

Product Lead-Free SnPb High Reliability Low Ag Water Soluble
EF-2210
X X   X  
EF-5601
X
  X  
EF-6103 X X X X  
EF-6850HF X   X X  
EF-8000 X X X X  
EF-8300 X X X X  
EF-8800HF X   X X  
EF-9301 X X X X  
EF-12000 X X   X  
RF-800
X

 

 


Solder Preforms

Size Dimensions Volume Pb-Free Sn-Pb SnBiAg
a b c
inch mm mm mm3
0201 0503 0.51 0.25 0.25 0.032   X  
0201S 0403 0.44 0.28 0.28 0.034 X    
0202 0505 0.51 0.51 0.25 0.065 X X  
03015 0838 0.76 0.38 0.25 0.072   X  
03015S 06035 0.60 0.35 0.35 0.074 X    
0402H 1006H 1.00 0.60 0.25 0.150 X X *
0402 1006 1.00 0.50 0.50 0.250 X X X
0402B 10055 1.00 0.55 0.55 0.303 X X *
0603H 1608H 1.60 0.80 0.50 0.640 X X *
0603 1608 1.60 0.80 0.80 1.024 X X X
0805H 2013H 2.01 1.30 0.40 1.045 X X *
0805 2013 2.01 1.30 0.76 1.986 X X X
0805S 2013S 2.01 1.30 1.30 3.397 X X *
1206 3015 3.00 1.47 0.77 3.396 X X *
1406 3515 3.56 1.52 0.77 4.167 X X *

*production will depend on market demand, please check with your local sales representative for availability


Washer

solder preform washer

OD
Min = .020" (0.51mm)

Max = 3.00" (76.0mm)

ID
Min = .008" (0.2mm)
Max = OD - .010" (0.25mm)
T (Thickness)
Min = .002" (0.05mm)
Max = .110" (2.80mm)


 
  
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