U0408FC33C Datasheet, PDF (4/6 Pages) Protek Devices – UNBUMPED FLIP CHIP ARRAY

APPLICATION INFORMATION
U0408FC3.3C
thru
U0408FC36C
PRINTED CIRCUIT BOARD RECOMMENDATIONS
PARAMETER
VALUE
Pad Size on PCB
Pad Shape
Pad Definition
Solder Mask Opening
Solder Stencil Thickness
Solder Stencil Aperture Opening (laser cut, 5% tapered walls)
Solder Paste Type
Pad Protective Finish
Tolerance - Edge To Corner Ball
Solder Ball Side Coplanarity
Maximum Dwell Time Above Liquidous (183°C)
Soldering Maximum Temperature
0.275mm
Round
Non-Solder Mask Defined Pads
0.325mm Round
0.150mm
0.330mm Round
No Clean
OSP(Entek Cu Plus 106A)
±50µm
±20µm
60 Seconds
270°C
REQUIREMENTS
Temperature:
T_P for Lead-Free (SnAgCu): 260-265°C
T_P for Tin-Lead: 240-245°C
Preheat time and temperature depends on solder paste and flux
activation temperature, component size, weight, surface area &
plating.
RECOMMENDED NON-SOLDER MASK
DEFINED PAD ILLUSTRATION
Non-Solder Mask Defined Pad
0.275mm DIA.
Solder Mask Opening
0.325mm DIA.
Solder Stencil Opening
0.330mm DIA.
T_P
T_L
T_SMAX
T_SMIN
05161.R4 3/05
Ramp-up
155°
Ramp-down
T_S - Preheat
140°
t 25°C to Peak
30-60 seconds
Ramp-up
Solder Time Ramp-down
15 seconds 15-20 seconds
4
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