BUF644 Vishay, BUF644 Datasheet - Page 6

• Manufacturer Part Number: BUF644
• Description: Silicon Npn High Voltage Switching Transistor
• Manufacturer: Vishay

BUF644
Vishay Telefunken
www.vishay.de FaxBack [phone]
6 (9)
94 9215
94 9211
94 9213
10
10
10
8
6
4
2
0
8
6
4
2
0
8
6
4
2
0
0
0
0
T
j
T
T
= 25 C
j
j
= 125 C
= 125 C
Figure 10. t
Figure 11. t
Figure 12. t
1
1
1
unsaturated (Baker clamp)
R-load
I
C
T
j
= 3A, I
saturated switching
R-load
I
= 125 C
C
–I
–I
–I
saturated switching
R-load
I
C
= 1.5A, I
s
s
s
B2
B2
B2
2
2
2
= 3A, I
vs. –I
vs. –I
vs. –I
T
T
B1
/ I
/ I
/ I
j
j
= 25 C
B1
= 25 C
B1
B1
= 0.6A
B2
B1
B2
B1
B2
/I
= 0.3A
/I
= 0.6A
/I
B1
B1
B1
3
3
3
4
4
4
94 9216
94 9214
94 9212
1.0
0.8
0.6
0.4
0.2
1.0
0.8
0.6
0.4
0.2
1.0
0.8
0.6
0.4
0.2
0
0
0
0
0
0
T
T
T
j
j
j
T
T
= 25 C
= 25 C
= 25 C
j
j
= 125 C
= 125 C
Figure 13. t
Figure 14. t
Figure 15. t
1
1
1
unsaturated (Baker clamp)
R-load
I
C
T
= 3A, I
j
saturated switching
R-load
I
–I
–I
–I
C
= 125 C
f
f
f
B2
B2
B2
= 1.5A, I
saturated switching
R-load
I
2
vs. –I
2
vs. –I
2
vs. –I
C
/ I
/ I
/ I
= 3A, I
B1
B1
B1
B1
= 0.6A
Document Number 86512
B2
B2
B2
B1
B1
/I
/I
/I
= 0.3A
B1
B1
B1
3
3
3
= 0.6A
Rev. 2, 20–Jan–99
4
4
4