N Channel
IRF840AS/AL
Power MOSFET
VDSS = 500V, RDS(on) = 0.85 ohm, ID= 8.0 A
D
G
S
Symbol
Maximum Operating Temperature Range (Tj) -55 to +150 C
Maximum Storage Temperature Range (Tstg) -55 to +150 C
Thermal Resistance
(Junction to Ambient) RTH (J-A)
W
Volt
MAXIMUM RATINGS
Gate to Source Voltage
Parameter Unit
Drain to Source
Voltage
Amp
Continuous Drain Current ID
Symbol
VGS
VDSS
Amp
Pulsed Drain Current IDM
Total Power Dissapation
Condition
PD
Value
(Tj = 25 C unless stated otherwise)
500
125
32
8.0
+/- 30V
(TA = 25 C)
40
Volt
C/W
ELECTRICAL CHARACTERISICS at
Parameter Unit
Symbol Test Conditions
V(BR)DSS
Drain to Source Breakdown Voltage VGS = 0 VDC, Volt
Tj = 25
C Maximum. Unless stated Otherwise
Value
Drain to Source Leakage Current
IGSS
VDS = 500VDC, VGS = 0VDC
Typ
Min Max
500 --
C
Tj=125
VDS = 400VDC, VGS = 0VDC
25
-
-
--
250
Gate to Source Leakage Current
IDSS
VGS = +30VDC 100
-
-
--
-100 nA
nA
VGS = -30VDC
Gate Threshold Voltage VDS = VGS,
VGS(th) Volt
2.0 -
Static Drain to Source On - Resistance RDS(on) VGS= 10VDC, ID= 4.8A
Gate Charge QG ID= 8.0A nC
Gate to Source Charge QGS
Gate to Drain Charge QGD
38
-
-
-
nC
nC
Input Capacitance
VDS = 25VDC, VGS= 0VDC, f = 1.0MHZ
Output Capacitance
Transfer Capacitance
CISS
COSS
CRSS
pF
pF
pF
-
-
-
-
-
-
1018
155
8.0
Turn On Delay Time
Turn Off Delay Time
Rise Time
Fall Time
td(on)
tr
td(off)
tf
--
--
11
23
--
26
--
19
nS
nS
nS
nS
VDD = 250VDC, ID= 8.0A, RG = 9.1
RD = 31
Continuous Source Current IS
Pulsed Source Current
Forward Voltage (Diode)
ISM
VSD VGS = 0VDC, IS=8.0A,
A
A
V
8
-
-
--
32
--
µA
ID = 250µA
ID = 250µA 4.0
- 0.85
-
9.0
VDS = 400VDC,
VGS = 10VDC 18
2.0
Tp = 300µS
-
-
-
Single Pulse Avalanche Energy EAS 510 mj
Avalanche Current IAR A
Single Pulse Avalanche Energy
Repetive Avalanche Energy EAR 13 mj
Page 1 of 2
8.0
IRF840AS/AL
Power MOSFET
VDSS = 500V, RDS(on) = 0.85 ohm, ID= 8.0 A
r
Mechanical Dimensions
Case TO262 Plastic a
e
m
b
f
d
c
DIMENSIONS
Millimetres Inches
Dim Min MinMax Max
a
b
c
d
e
f
g
h
j
k
m
n
10.29 10.54 0.405 0.415
9.91 10.54 0.390 0.415
1.15 0.045
1.15 1.40 0.045 0.055
0.69 0.93 0.027 0.037
4.20 4.69 0.165 0.185
0.46 0.55 0.018 0.022
2.54 Pitch 0.10 Pitch
3.55 4.06 0.140 0.160
g
2.64 2.92 0.104 0.115
1.22 1.32 0.048 0.052
n
j
k
h
1 2 3 3 - Source
1 - Gate
2 & 4 - Drain
13.47 14.09 0.530 0.555
4
Mechanical Dimensions
Case SMB 220 Plastic a
e
p
k
nj
b
f
m
d
c
DIMENSIONS
Millimetres Inches
Dim Min MinMax Max
a
b
c
d
e
f
g
h
j
k
m
n
p
9.85 10.67 0.380 0.420
14.61 15.88 0.575 0.625
1.65 0.065
8.51 9.65 0.335 0.380
1.27 1.78 0.050 0.070
4.08 4.83 0.180 0.190
1.15 1.400 0.045 0.055
0.38 0.77 0.015 0.029
2.54 Pitch 0.10 Pitch
0.51 0.99 0.020 0.038
0.51 0.89 0.020 0.35
g
1.14 1.40 0.045 0.055
1.78 2.79 0.070 0.110
3 - Source
1 - Gate
2 & 4 - Drain
1 2 3
4
Page 2 of 2
