FreeLists / si-list / [SI-LIST] Re: Current capacity of a Solder Ball

[Moses Chan <mchan@xxxxxxxxxxx>]

Hi Brian,

I asked the same question to the list a few months back and got the 
following answer, below:

Solder Ball (63Sn/37Pb) 0.0006 m
Ambient Temp. 34 Deg. C
Melting Temp. 189 Deg. C
Thermal Conductivity 50 W/m-C
Electrical Resistivity 0.000000145 ohm-m
Thermal Resistance 41026.51161 C/W
DC Electrical Resistance 0.297442209 ohm
Total Resistance 0.297442209 ohm
Power to Melt 0.003778045 W
Current to Melt 0.112702164 Amps


Moses Chan
Vitesse Semiconductor
Camarillo, California

At 11:13 AM 2/5/03 -0800, Brian Schieck wrote:

>Does any one know what the current carrying capacity of a solder ball is?
>How is the capacity determined?
>Is the capacity derated to account for temperature and voids?
>
>
>for a 60 mil solder ball.
>
>Brian Schieck
>NVidia Corporation
>2701 San Tomas Expressway MS B22-221
>Santa Clara, California   95050
>Direct Phone #  (408) 486-2697
>Corp Phone   #  (408) 486-2000 x62697
>Local Fax    #  (408) 486-8078
>Corp  Fax    #  (408) 486-2200
>
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