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IRF840B Datasheet(PDF) 1 Page - Kersemi Electronic Co., Ltd.

Part # IRF840B
Description  Low gate charge ( typical 41 nC)
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Manufacturer  KERSEMI [Kersemi Electronic Co., Ltd.]
Direct Link  http://www.kersemi.com
Logo KERSEMI - Kersemi Electronic Co., Ltd.

IRF840B Datasheet(HTML) 1 Page - Kersemi Electronic Co., Ltd.

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IRF840B/IRFS840B
500V N-Channel MOSFET
General Description
These N-Channel enhancement mode power field effect
transistors are produced using Kersemi proprietary,
planar, DMOS technology.
This advanced technology has been especially tailored to
minimize on-state resistance, provide superior switching
performance, and withstand high energy pulse in the
avalanche and commutation mode. These devices are well
suited for high efficiency switch mode power supplies,
power factor correction and electronic lamp ballasts based
on half bridge.
Features
• 8.0A, 500V, RDS(on) = 0.8Ω @VGS = 10 V
• Low gate charge ( typical 41 nC)
• Low Crss ( typical 35 pF)
• Fast switching
• 100% avalanche tested
• Improved dv/dt capability
Absolute Maximum Ratings T
C = 25°C unless otherwise noted
* Drain current limited by maximum junction temperature.
Thermal Characteristics
Symbol
Parameter
IRF840B
IRFS840B
Units
VDSS
Drain-Source Voltage
500
V
ID
Drain Current
- Continuous (TC = 25°C)
8.0
8.0
A
- Continuous (TC = 100°C)
5.1
5.1
A
IDM
Drain Current
- Pulsed
(Note 1)
32
32
A
VGSS
Gate-Source Voltage
± 30
V
EAS
Single Pulsed Avalanche Energy
(Note 2)
320
mJ
IAR
Avalanche Current
(Note 1)
8.0
A
EAR
Repetitive Avalanche Energy
(Note 1)
13.4
mJ
dv/dt
Peak Diode Recovery dv/dt
(Note 3)
3.5
V/ns
PD
Power Dissipation (TC = 25°C)
134
44
W
- Derate above 25°C
1.08
0.35
W/°C
TJ, TSTG
Operating and Storage Temperature Range
-55 to +150
°C
TL
Maximum lead temperature for soldering purposes,
1/8" from case for 5 seconds
300
°C
Symbol
Parameter
IRF840B
IRFS840B
Units
RθJC
Thermal Resistance, Junction-to-Case Max.
0.93
2.86
°C/W
RθCS
Thermal Resistance, Case-to-Sink Typ.
0.5
--
°C/W
RθJA
Thermal Resistance, Junction-to-Ambient Max.
62.5
62.5
°C/W
TO-220
IRF Series
S
D
G
TO-220F
IRFS Series
www.kersemi.com
1
2014-8-13


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