IPC-TM-650 EN 2022 试验方法1.pdf - 第322页
Figure 2 TMA Expansion Curv e Slope in this region: CTE above T g Slope in this region: CTE below T g T g T emperature (˚C) Expansion (µm) A B C D Figure 3 TM A Expansion Curve and In stantaneous CTE Curve Instantaneous …
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Figure 2 TMA Expansion Curve
Slope in this region:
CTE above T
g
Slope in this region:
CTE below T
g
T
g
Temperature (˚C)
Expansion (µm)
A
B
C
D
Figure 3 TMA Expansion Curve and Instantaneous CTE
Curve
Instantaneous CTE Curve
T
g
60
50
40
30
20
10
0
Expansion Curve
0
40
80
120
160
200
240
Temperature (˚C)
Expansion (µm)
CTE (ppm)
IPC-TM-650
Number
Subject Date
Revision
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IPC-TM-650
Number
Subject Date
Revision
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