Rectifier. DURF840 Datasheet

DURF840 Datasheet PDF


Part

DURF840

Description

Ultrafast Recovery Rectifier

Manufacture

Littelfuse

Page 3 Pages
Datasheet
Download DURF840 Datasheet


DURF840 Datasheet
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
VRWM
IF(AV)
IFSM
Conditions
-
r5e0c%tandguutylarcywcaleve@fToCrm=55 °C,
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
VF1
VF2
IR1
IR2
trr1
Conditions
@8A, Pulse, TJ = 25 °C
@8A, Pulse, TJ = 125 °C
@VR = Rated VR , TJ = 25 °C
@VR = Rated VR , TJ = 125 °C
IF=500mA, IR=1A,and Irm=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

DURF840 Datasheet
Ultrafast Recovery Rectifier
DURF840, 8A, 400V, ITO-220AC
Thermal-Mechanical Specifications
Characteristics
Junction Temperature
Storage Temperature
Typical Thermal
Resistance Junction to Case
Approximate Weight
Case Style
Symbol
TJ
Tstg
RθJC
wt
-
Figure 1: Typical Forward Characteristics
Conditions
-
-
DC operation
-
ITO-220AC
Specification
-55 to +150
-55 to +150
5.0
1.6
-
Unit
°C
°C
°C/W
g
-
Figure 2: Typical Reverse Characteristics
Figure 3: Typical Junction Capacitance
Part Numbering and Marking System
DURF840
LF xxxxx
*xxxxx is YYWWL
DUR
F
8
40
LF
YY
WW
L
= Device Type
= Package type
= Forward Current (8A)
= Reverse Voltage (400V)
= Littelfuse
= Year
= Week
= Lot Number
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/22/15


Features Datasheet pdf Ultrafast Recovery Rectifier DURF840, 8A , 400V, ITO-220AC DURF840 RoHS Pb e3 SP3051 Description Littelfuse DUR ser ies Ultrafast Recovery Rectifier is des igned to meet the general requirements of commercial applications by providing low Trr, high-temperature, lowleakage and low forward voltage drop products. It is suitable for output rectifier, fr ee-wheeling or boost diode in high-freq uency power switching application such as switch mode power supply and DC-DC c onverters. Circuit Diagram 1 Cathode Maximum Ratings 2 Anode Features • Ultra-fast switching • Low reverse leakage current • High surge current capability • Low forward voltage dr op • Single die in two-leaded, elec trically isolated ITO220AC package • Pb-free E3 means 2nd level interconnec t is Pb-free and the terminal finish ma terial is tin(Sn) (IPC/JEDEC J-STD609A. 01) Applications • Output rectifie rs in switch mode power supplies (SMPS) and DC to DC converters • Free-wheeling diode or boost diode in converters .
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