User's Manual

Cinterion
®
ELS31-VA/ELS51-VA Hardware Interface Description
4.2 Mounting ELS31-VA/ELS51-VA onto the Application Platform
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 ELS31-VA_ELS51-VA_HID_v01.000 2017-01-04
Confidential / Preliminary
Page 82 of 106
4.2.3 Soldering Conditions and Temperature
4.2.3.1 Reflow Profile
Figure 45: Reflow Profile
Table 23: Reflow temperature ratings
1
1. Please note that the reflow profile features and ratings listed above are based on the joint industry stan-
dard IPC/JEDEC J-STD-020D.1, and are as such meant as a general guideline. For more information
on reflow profiles and their optimization please refer to [4].
Profile Feature Pb-Free Assembly
Preheat & Soak
Temperature Minimum (T
Smin
)
Temperature Maximum (T
Smax
)
Time (t
Smin
to t
Smax
) (t
S
)
150°C
200°C
60-120 seconds
Average ramp up rate (T
Smax
to T
P
) 3K/second max.
Liquidous temperature (T
L
)
Time at liquidous (t
L
)
217°C
60-90 seconds
Peak package body temperature (T
P
) 245°C +0/-10°C
Time (t
P
) within 5 °C of the peak package body
temperature (T
P
)
20 seconds max.
Average ramp-down rate (T
P
to T
Smax
) 3 K/second max.
Time 25°C to maximum temperature 6 minutes max.
T
L
T
P
t
P
t
L
t
S
Preheat
t to maximum
Time
Temperature
T
Smin
T
Smax