CM1230
http://onsemi.com
6
APPLICATION INFORMATION
Table 5. PRINTED CIRCUIT BOARD RECOMMENDATIONS
Parameter Value
Pad Size on PCB 0.275 mm
Pad Shape Round
Pad Definition Non−Solder Mask defined pads
Solder Mask Opening 0.325 mm Round
Solder Stencil Thickness 0.125 − 0.150 mm
Solder Stencil Aperture Opening (laser cut, 5% tapered walls) 0.330 mm Round
Solder Flux Ratio 50/50 by volume
Solder Paste Type No Clean
Pad Protective Finish OSP (Entek Cu Plus 106A)
Tolerance − Edge To Corner Ball
±50 mm
Solder Ball Side Coplanarity
±20 mm
Maximum Dwell Time Above Liquidous 60 seconds
Maximum Soldering Temperature for Lead−free Devices using a Lead−free Solder Paste 260°C
Non−Solder Mask Defined Pad
0.275 mm DIA.
Solder Stencil Opening
0.330 mm DIA.
Solder Mask Opening
0.325 mm DIA.
Figure 5. Recommended Non−Solder Mask Defined Pad Illustration
Figure 6. Lead−free (SnAgCu) Solder Ball Reflow Profile