© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/20/16
Ultrafast Recovery Rectifier
SP3051
DURB2020CT, 2x 10A, 200V, TO-263, Common Cathode
DURB2020CT
Features
Applications
• Ultra-fast switching
• Low reverse leakage
current
• High surge current
capability
• Low forward voltage drop
• Common cathode
configuration in surface
mount TO-263 (D2PAK)
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)
• 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
Maximum Ratings
Characteristics Symbol Conditions Max. Unit
Peak Inverse Voltage VRWM - 200 V
Average Rectified Forward Current IF(AV)
50% duty cycle @TC =100 °C,
rectangular wave form
10 (Per Leg) A
20 (Total Device)
Peak One Cycle Non-
Repetitive Surge Current
(per leg)
IFSM 8.3 ms, half sine pulse 125 A
Circuit Diagram
Base Common
Cathode
AnodeAnode
1
2
3
Description
Characteristics Symbol Conditions Max. Unit
Forward Voltage Drop ( Per Leg)1VF@IF= 10A, Pulse, TJ = 25 °C 1. 15 V
Reverse Current IR1 @VR = Rated VR , TJ = 25 °C 15 μA
IR2 @VR = Rated VR , TJ = 125 °C 250 μA
Junction Capacitance CTBias=5V, 10KHZ 60 pF
Reverse Recovery Time trr1 IF=500mA, IR=1A,and Irm=250mA 35 ns
Electrical Characteristics
Footnote 1: Pulse Width < 300μs, Duty Cycle <2%
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.
RoHS
Pb
e3
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/20/16
Ultrafast Recovery Rectifier
DURB2020CT, 2x 10A, 200V, TO-263, Common Cathode
Figure 3: Typical Junction Capacitance
Figure 2: Typical Reverse CharacteristicsFigure 1: Typical Forward Characteristics
Characteristics Symbol Conditions Specification Unit
Junction Temperature TJ- -55 to +150 °C
Storage Temperature Tstg - -55 to +150 °C
Typical Thermal
Resistance Junction to Case RθJC DC operation 3.5 °C/W
Typical Thermal
Resistance Junction to Ambient RθJA DC operation 50 °C/W
Approximate Weight wt - 1.41 g
Case Style -D2PAK - -
Thermal-Mechanical Specifications
Part Numbering and Marking System
DUR = Device Type
B = Package type
20 = Forward Current (20A)
20 = Reverse Voltage (200V)
CT = Configuration
LF = Littelfuse
YY = Year
WW = Week
L = Lot Number
LF
DURB2020CT
YYWWL
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/20/16
Ultrafast Recovery Rectifier
SP3051
DURB2020CT, 2x 10A, 200V, TO-263, Common Cathode
Packing Options
Part Number Marking Packing Mode M.O.Q
DURB2020CT DURB2020CT 800pcs / reel 800
Dimensions-Package TO-263 (D2PAK)
Millimeters
Min Max
A4.06 4.83
A1 0.00 0.25
b0.51 0.99
b1 1. 14 1.78
c0.31*0.74
c1 1. 14 1.65
D8.38 9.65
D1 6.40*-
E9.65 10.67
E1 6.22 -
E2 9.65 10.67
e2.54 BSC
H14.60*15.88
L1.78 2.79
L1 - 1.68
L2 - 1.78
L3 0.254 BSC
Carrier Tape & Reel Specification TO-263 (D2PAK)
Carrier Tape & Reel Specification
Millimeters
Min Max
A10.70 10.90
B16.03 16.23
C5.11 5.31
dø1.45 ø1.65
E1.65 1.85
F11.40 11.60
P0 3.90 4.10
p15.90 16.10
P1 1.90 2.10
W23.90 24.30
Footnote *: The spec. does not comply with JEDEC spec.
