Datasheet

RDA Microelectronics, Inc. RDA5807M FM Tuner V1.1
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Page 18 of 22
10 PCB Land Pattern
Figure 10-1.Classification Reflow Profile
Profile Feature Sn-Pb Eutectic Assembly Pb-Free Assembly
Average Ramp-Up Rate
(T
Smax
to T
p
3
)
o
3 C/second max.
o
C/second max.
Preheat
-Temperature Min (T
smin
-Temperature Max (T
)
smax
-Time (t
)
smin
to t
smax
)
100
o
100
C
o
60-120 seconds
C
150
o
200
C
o
60-180 seconds
C
Time maintained above:
-Temperature (T
L
-Time (t
)
L
)
183
o
60-150seconds
C 217
o
60-150 seconds
C
Peak /Classification
Temperature(T
p
See Table-II
)
See Table-III
Time within 5
o
C of actual
Peak Temperature (t
p
10-30 seconds
)
20-40 seconds
Ramp-Down Rate 6
o
6 C/second max.
o
C/seconds max.
Time 25
o
6 minutes max.
C to Peak
Temperature
8 minutes max.
Table-I Classification Reflow Profiles