Data Sheet

Datasheet
iM980A
iM980A_Datasheet_mcf88.docx, v1.2 Page 17
Assuming a frequency of approx. 915 MHz, FR4 (e
r
≈4.8) as substrate material,
copper as conductor material, G = 0.4 mm and T = 35 µm, the width of
transmission line is given by Table 7-1.
H [mm]
W [mm]
1.0
1.4
1.6
1.9
Table 7-1: Recommended width of transmission line for CPWG and 915 MHz
7.3 Recommended Soldering Conditions
An example of the temperature profile for the soldering process of the iM980A
is depicted in Figure 7-3 with the corresponding values as given by Table 7-2.
The temperature values should not exceed the limits.
Temperature
Time
t
PH
t
1
t
2
T
2
T
1
T
PH
Figure 7-3: Soldering Profile
Phase
Pb-Free
Conditions
Preheating
t
PH
= 120s
T
PH
= 160~180°C
Primary heat
t
1
= 60s
T
1
= 220°C
Peak
t
2
= 10s (max)
T
2
= 255°C
Table 7-2: Recommended Soldering Parameter for Temperature and Timing