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IRF644 Datasheet(PDF) 5 Page - Fairchild Semiconductor

Part # IRF644
Description  250V N-Channel MOSFET
Download  10 Pages
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

IRF644 Datasheet(HTML) 5 Page - Fairchild Semiconductor

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Rev. A, November 2001
©2001 Fairchild Semiconductor Corporation
Typical Characteristics (Continued)
10
-5
10
-4
10
-3
10
-2
10
-1
10
0
10
1
10
-2
10
-1
10
0
※ No te s :
1 . Z
θ JC (t) = 0 . 9
℃ /W M a x .
2 . D u ty F a c to r, D = t
1
/t
2
3 . T
JM - T C = P DM * Z θ JC (t )
s in g le p u ls e
D= 0 .5
0. 02
0. 2
0. 05
0. 1
0. 01
t
1 , S q uar e
W a v e P u ls e D u r a tio n [s ec ]
Figure 11-1. Transient Thermal Response Curve for IRF644B
t1
PDM
t
2
10
-5
10
-4
10
-3
10
-2
10
-1
10
0
10
1
10
-2
10
-1
10
0
※ No te s :
1 . Z
θ JC (t) = 2 . 8 9
℃ /W M a x .
2 . D u ty F a c to r, D = t
1 /t 2
3 . T
JM
- T
C
= P
DM
* Z
θ JC (t)
s in g le p u ls e
D= 0 .5
0. 02
0. 2
0. 05
0. 1
0. 01
t
1 , S q uar e
W a v e P u ls e D u ra tio n [s ec ]
Figure 11-2. Transient Thermal Response Curve for IRFS644B
t
1
PDM
t
2


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