Datasheet

Schottky Barrier Rectifier
DST2045AX, 20A, 45V, Axial, Single
DST2045AX
RoHS
Pb
Description
Littelfuse DST series Ultra Low VF Schottky Barrier
Rectifier is designed to meet the general requirements
of commercial and industry applications by providing high
temperature, low leakage and lower VF products.
It is suitable for high frequency switching mode power
supply, free-wheeling diodes and polarity protection
diodes.
Features
Pin out
ltra low forward voltage
• U
drop
• High
frequency operation
Anode
• High
junction
temperature capability
Cathode
• Guard ring for enhanced
ruggedness and long
term reliability
• Single die in P600
package
Applications
• S
witching mode power
supply
• Free-Wheeling diodes
• Polarity Protection Diodes
• DC/DC converters
Maximum Ratings
Parameters
Symbol
Test Conditions
Max
Unit
Peak Inverse Voltage
VRWM
-
45
V
Average Forward Current (per device)
IF(AV)
50% duty cycle @TA =25°C
rectangular wave form
20
A
Peak One Cycle Non-Repetitive Surge
Current (per leg)
IFSM
8.3 ms, half Sine pulse
250
A
Symbol
Test Conditions
Max
Unit
VF1
@20A, Pulse, TJ = 25 °C
0.58
VF2
@20A, Pulse, TJ = 125 °C
0.50
IR1
@VR = rated VR TJ = 25 °C
1.2
IR2
@VR = rated VR TJ = 125 °C
35
Electrical Characteristics
Parameters
Forward Voltage Drop (per leg) *
Reverse Current (per leg) *
* Pulse Width < 300μs, Duty Cycle <2%
V
mA
©2016 Littelfuse, Inc
Specifications are subject to change without notice.
Revised:02/03/16
Schottky Barrier Rectifier
DST2045AX, 20A, 45V, Axial, Single
Thermal-Mechanical Specifications
Parameters
Symbol
Test Conditions
Max
Unit
Junction Temperature
TJ
-55 to +150
°C
Storage Temperature
Tstg
-55 to +150
°C
Thermal Resistance Junction
to Ambient
RthJA
55
°C/W
Approximate Weight
wt
2.24
g
Case Style
DC operation
P600
Figure 1: Typical Forward Characteristics
Figure 2: Typical Reverse Characteristics
ºC
ºC
ºC
ºC
Figure 3: Typical Junction Capacitance
ºC
©2016 Littelfuse, Inc
Specifications are subject to change without notice.
Revised:02/03/16
Schottky Barrier Rectifier
DST2045AX, 20A, 45V, Axial, Single
Dimensions- P600
D
C
A
A
B
DS
T
20
45
AX
LF
YY
WW
L
Millimeters
Min
Max
Min
Max
A
1.000
-
25.40
-
B
0.340
0.360
8.60
9.10
C
0.048
0.052
1.20
1.30
D
0.340
0.360
8.60
9.10
Packing Options
Part Numbering and Marking System
DST2045AX
LF YYWWL
Inches
Dimensions
= Device Type
= Ultralow VF
= Forward Current (20A)
= Reverse Voltage (45V)
= Package Type
= Littelfuse
= Year
= Week
= Lot Number
Part Number
Marking
Packing Mode
M.O.Q
DST2045AX
DST2045AX
500pcs / reel
2500
Carrier Tape & Reel Specification
A
Z
90°±5°
D0
D0
E
W
L1
D
T
Max
A
9.5
10.5
B
50.9
53.9
D0
B
E
Millimeters
Min
330.0 typ
D
B
L2
Symbol
30.1
30.9
E
0.8 max
L1
1.0 max
1.0 max
L2
T
5.6
6.4
W
78.0
81.0
Z
1.2 max
©2016 Littelfuse, Inc
Specifications are subject to change without notice.
Revised:02/03/16