IRF840B/IRFS840B
Electrical Characteristics
Symbol
Parameter
T
C
= 25°C unless otherwise noted
Test Conditions
Min
Typ
Max
Units
Off Characteristics
BV
DSS
∆BV
DSS
/
∆T
J
I
DSS
I
GSSF
I
GSSR
Drain-Source Breakdown Voltage
Breakdown Voltage Temperature
Coefficient
Zero Gate Voltage Drain Current
Gate-Body Leakage Current, Forward
Gate-Body Leakage Current, Reverse
V
GS
= 0 V, I
D
= 250
µA
I
D
= 250
µA,
Referenced to 25°C
V
DS
= 500 V, V
GS
= 0 V
V
DS
= 400 V, T
C
= 125°C
V
GS
= 30 V, V
DS
= 0 V
V
GS
= -30 V, V
DS
= 0 V
500
--
--
--
--
--
--
0.55
--
--
--
--
--
--
10
100
100
-100
V
V/°C
µA
µA
nA
nA
On Characteristics
V
GS(th)
R
DS(on)
g
FS
Gate Threshold Voltage
Static Drain-Source
On-Resistance
Forward Transconductance
V
DS
= V
GS
, I
D
= 250
µA
V
GS
= 10 V, I
D
= 4.0 A
V
DS
= 40 V, I
D
= 4.0 A
(Note 4)
2.0
--
--
--
0.65
7.3
4.0
0.8
--
V
Ω
S
Dynamic Characteristics
C
iss
C
oss
C
rss
Input Capacitance
Output Capacitance
Reverse Transfer Capacitance
V
DS
= 25 V, V
GS
= 0 V,
f = 1.0 MHz
--
--
--
1400
145
35
1800
190
45
pF
pF
pF
Switching Characteristics
t
d(on)
t
r
t
d(off)
t
f
Q
g
Q
gs
Q
gd
Turn-On Delay Time
Turn-On Rise Time
Turn-Off Delay Time
Turn-Off Fall Time
Total Gate Charge
Gate-Source Charge
Gate-Drain Charge
V
DS
= 400 V, I
D
= 8.0 A,
V
GS
= 10 V
(Note 4, 5)
V
DD
= 250 V, I
D
= 8.0 A,
R
G
= 25
Ω
(Note 4, 5)
--
--
--
--
--
--
--
22
65
125
75
41
6.5
17
55
140
260
160
53
--
--
ns
ns
ns
ns
nC
nC
nC
Drain-Source Diode Characteristics and Maximum Ratings
I
S
I
SM
V
SD
t
rr
Q
rr
Maximum Continuous Drain-Source Diode Forward Current
Maximum Pulsed Drain-Source Diode Forward Current
V
GS
= 0 V, I
S
= 8.0 A
Drain-Source Diode Forward Voltage
Reverse Recovery Time
Reverse Recovery Charge
V
GS
= 0 V, I
S
= 8.0 A,
dI
F
/ dt = 100 A/µs
(Note 4)
--
--
--
--
--
--
--
--
390
4.2
8.0
32
1.4
--
--
A
A
V
ns
µC
Notes:
1. Repetitive Rating : Pulse width limited by maximum junction temperature
2. L = 9.0mH, I
AS
= 8.0A, V
DD
= 50V, R
G
= 25
Ω,
Starting T
J
= 25°C
3. I
SD
≤
8.0A, di/dt
≤
200A/µs, V
DD
≤
BV
DSS,
Starting T
J
= 25°C
4. Pulse Test : Pulse width
≤
300µs, Duty cycle
≤
2%
5. Essentially independent of operating temperature
©2001 Fairchild Semiconductor Corporation
Rev. A, November 2001
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
