BGA Solder Ball
 
BGA Devices    •      Ball Count Per BGA    •     Tolerance
Elastomer Core Solder Ball    •     Ball Weight/Mass    •     Down Pressure (Force) per ball

 
BGA Solder Ball

Standard Lead Free Alloy RoHS (Pb Free)
Ref. Composition Solidus
°C
Liquidus
°C
Density
gm/cc
SAC305 Sn96.5 Ag3.0 Cu0.5 217 220 7.4
Minimum Order 250K pcs
 
 
Special Lead Free Alloy RoHS (Pb Free)
Ref. Alloy Solidus
°C
Liquidus
°C
Density
gm/cc
SAC101 Sn98.9 Ag1.0 Cu0.1 - - 7.343
SAC105 Sn98.5 Ag1.0 Cu0.5 215 227 7.350
SAC125 Sn98.3 Ag1.2 Cu0.5 - - 7.356
SAC125+Ni Sn98.25 Ag1.2 Cu0.5 Ni0.05 - - 7.356
SAC266 Sn96.8 Ag2.6 Cu0.6 - - 7.403
SAC300 Sn96.95 Ag3.0 Cu0.05 - - 7.406
SAC302 Sn96.8 Ag3.0 Cu0.2 217 220 -
SACN306 Sn96.3 Ag3.0 Cu0.6 Ni0.04 220 226 ~7.4
SAC307 Sn96.3 Ag3.0 Cu0.7 - - -
- Sn80.8 Sb18 Ni.2 - - -
SAC350 Sn96.45 Ag3.5 Cu0.05 - - 7.422
SAC357 Sn95.8 Ag3.5 Cu0.7 218 217 7.4
SAC387 Sn95.5 Ag3.8 Cu0.7 - - 7.442
SAC400 Sn95.95 Ag4.0 Cu0.05 - - 7.438
SAC396 Sn95.5 Ag3.9 Cu0.6 217 218 7.4
SAC405 Sn95.5 Ag4.0 Cu0.5 217 225 7.445
Sn96 Sn96.5 Ag3.5 - - 7.400
SACQ Sn92.45 Ag4 Cu0.5 Bi3.0 Ni0.05 207 217 NA
Innolot ~Sn92.3 Ag3.8 Cu0.7 Bi2.0 Sb1.0 Ni0.2 206 218 7.4
Minimum Order 250K pcs
 
 
Non Lead Free Alloy
Ref. Composition Typical
Device Types
Available
Special Order
Density
gm/cc
Sn62 Sn62 Pb36 Ag2.0 BGA/CBGA Yes 8.44
Sn63 Sn63 Pb37 BGA Standard 8.4
Sn60 Sn60 Pb40 N/A No 8.5
Sn20 Sn20 Pb80 CCGA Column 10.2
Sn15 Sn15 Pb85 CCGA Column 10.5
Sn10 Sn10 Pb90 CBGA
CCGA
Ball
Column
10.7
Sn5 Sn5 Pb95 Flip Chip Ask 11.0
MOQ = Minimum Order 250Kpcs
 
 
Ball Diameter
Ø Ball Dia
(mm)
Ø Ball Dia
(Mil)
Standard
BGA Pitch
Alternative
BGA Pitch
Ø Ball Diam
Tolerance
Pre-Reflow
0.10mm 4mil - - ±5µm
0.15mm 6mil - - ±10µm
0.20mm 8mil 0.3mm - ±10µm
0.25mm 10mil 0.4mm - ±10µm
0.30mm 12 mil 0.5mm - ±10µm
0.35mm 14 mil 0.65 ~ 0.75mm - ±10µm
0.40mm 16 mil 0.8mm 1.0mm ±10µm
0.45mm 18 mil 0.8mm 1.0mm ±10µm
0.50mm 20 mil 1.0mm 0.8mm ±10µm
0.61mm 24 mil 1.0mm - ±15µm
0.63mm 25 mil 1.0mm - ±15µm
0.76mm 30 mil 1.27 ~ 1.5mm - ±15µm
Other Ball Diameters Avialable:
 
 
Ball Weight (Mass)
Ø Ball Dia
(mm)
Ø Ball Dia
(Mil)
Solder ball
Volume
cm3
Quantity Balls
Per gm
Sn63/Pb37
Quantity Balls
Per gm
SAC305
0.10mm 4mil 5.236*10-7 227,000 258,000
0.15mm 6mil 1.767*10-6 67,000 76,000
0.20mm 8mil 4.189*10-6 28,000 32,000
0.25mm 10mil 8.181*10-6 14,500 16,500
0.30mm 12 mil 1.414*10-5 8,400 9,500
0.35mm 14 mil 2.245*10-5 5,300 6,000
0.40mm 16 mil 3.351*10-5 3,500 4,000
0.45mm 18 mil 4.771*10-5 2,500 2,800
0.50mm 20 mil 6.545*10-5 1,800 2,060
0.61mm 24 mil 1.188*10-4 1,000 1,130
0.63mm 25 mil 1.309*10-4 910 1,030
0.76mm 30 mil 2.230*10-4 520 590
Above table shows the number of balls contained in 1 gram of weight (mass).
The Mass (gm) of an individual solder ball is calculated by dividing the number of balls into the number 1.0
Example: 1/590 = 0.001695gm is the mass of a single SAC305 ball measuring Ø 0.76mm diameter
Weights and measurements provided above are approximations and are not guaranteed to be accurate.
Numbers are rounded or truncated for easy reference.
 
 
Maximum Mechanical Downward Pressure (Force) on Top of BGA
Ø Ball Dia
(mm)
Ø Ball Dia
(Mil)
Pitch
Solder Ball
Spacing
Max Pressure
Per Ball
Sn63/Pb37
Max Pressure
Per Ball
SAC305
0.25mm 10mil 0.5mm 3 g 7 g
0.40mm 16 mil 0.8mm 6 g 12 g
0.50mm 18 mil 0.92mm
Hex Pattern
7 g 14 g
0.63mm 25 mil 1.0mm 8 g 16 g
0.76mm 30 mil 1.27mm 12 g 24 g
Maximum mechanical downward pressure (force) caused by heatsink mass mounted on top of BGA.
PCB and BGA should be designed to prevent bending or flexing of the PCB and BGA substrate.
Pressure is typically applied to a thermal pad to keep contact between the top of the BGA and underside of heatsink.
The pressure should be limited to prevent the BGA from being destroyed by too much force on top of the package.
Above data was extracted from recommendations provided by Intel (Altera) as of May 2020.
Data provided above are approximations and are not guaranteed to be accurate.
Numbers are rounded or truncated for easy reference.
 
 
Solder Ball Tolerance (Before Reflow)
Ø Ball Dia
(mm)
Ø Ball Dia
(Mil)
REF
Dimensional
Tolerance
Before Reflow
0.10mm 4mil ±5um
0.125mm 5mil ±5um
0.15mm 6mil ±10um
0.20mm 8mil ±10um
0.25mm 10mil ±10um
0.30mm 12 mil ±10um
0.35mm 14 mil ±10um
0.40mm 16 mil ±10um
0.45mm 18 mil ±10um
0.50mm 20 mil ±10um
0.61mm 24 mil ±15um
0.63mm 25 mil ±15um
0.76mm 30 mil ±15um
Solder ball tolerance is applicable before use (before reflow).
Solder ball tolerance after use (after relow) is not defined.
Roundness of the ball is affected by the pad diameter, soldermask (SMD or NSMD) and downward pressure during reflow.
Data provided above are approximations and are not guaranteed to be accurate.



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