Datasheet

www.vishay.com Document Number: 91070
6 S-81290-Rev. B, 16-Jun-08
IRF840, SiHF840
Vishay Siliconix
Fig. 12c - Maximum Avalanche Energy vs. Drain Current
Fig. 13a - Basic Gate Charge Waveform
Fig. 13b - Gate Charge Test Circuit
91070_12c
Bottom
To p
I
D
3.6 A
5.1 A
8.0 A
V
DD
= 50 V
1200
0
200
400
600
800
1000
25 150
125
10075
50
Starting T
J
, Junction Temperature (°C)
E
AS
, Single Pulse Energy (mJ)
Q
GS
Q
GD
Q
G
V
G
Charge
10 V
D.U.T.
3 mA
V
GS
V
DS
I
G
I
D
0.3 µF
0.2 µF
50 kΩ
12 V
Current regulator
Current sampling resistors
Same type as D.U.T.
+
-