DURF840 Datasheet, PDF (1/3 Pages) –

Ultrafast Recovery Rectifier
DURF840, 8A, 400V, ITO-220AC
DURF840
RoHS Pb _e3
Description
Littelfuse DUR series Ultrafast Recovery Rectifier is
designed to meet the general requirements of commercial
applications by providing low Trr, high-temperature, low-
leakage and low forward voltage drop products. It is suit-
able for output rectifier, free-wheeling or boost diode in
high-frequency power switching application such as switch
mode power supply and DC-DC converters.
Circuit Diagram
1
Cathode
Maximum Ratings
2
Anode
Features
• Ultra-fast switching
• Low reverse leakage
current
• High surge current
capability
• Low forward voltage drop
• Single die in two-leaded,
electrically isolated ITO-
220AC package
• Pb-free E3 means 2nd
level interconnect is
Pb-free and the terminal
finish material is tin(Sn)
(IPC/JEDEC J-STD-
609A.01)
Applications
• Output rectifiers in switch
mode power supplies
(SMPS) and DC to DC
converters
• Free-wheeling diode or
boost diode in converters
and motor control circuits
• Anti-parallel diode for
high frequency switching
devices such as IGBT
• Uninterruptible Power
Supplies (UPS)
• Inductive heating and
melting
• Ultrasonic cleaners and
welders
Characteristics
Peak Inverse Voltage
Average Forward Current
Peak One Cycle Non-
Repetitive Surge Current ( Per Leg)
Symbol
V_RWM
I_F(AV)
I_FSM
Conditions
-
50% duty cycle @T_C =55 °C,
rectangular wave form
8.3 ms, half sine pulse
Max.
400
8
80
Unit
V
A
A
Electrical Characteristics
Characteristics
Forward Voltage Drop¹
Reverse Current¹
Reverse Recovery Time
Symbol
V_F1
V_F2
I_R1
I_R2
t_rr1
Conditions
@8A, Pulse, T_J = 25 °C
@8A, Pulse, T_J = 125 °C
@V_R = Rated V_R , T_J = 25 °C
@V_R = Rated V_R , T_J = 125 °C
I_F=500mA, I_R=1A,and I_rm=250mA
Footnote ¹: Pulse Width < 300μs, Duty Cycle <2%
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/22/15
Max.
1.3
1.2
10
500
45
Unit
V
V
μA
μA
ns