RURD420, RURD420S
Data Sheet
January 2000
File Number 3614.5
4A, 200V Ultrafast Diodes
Features
The RURD420 and RURD420S are ultrafast diodes with soft
• Ultrafast with Soft Recovery . . . . . . . . . . . . . . . . . . .<30ns
recovery characteristics (t < 30ns). They have low forward
voltage drop and are ion-implanted epitaxial planar
construction.
rr
o
• Operating Temperature. . . . . . . . . . . . . . . . . . . . . . .175 C
• Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200V
• Avalanche Energy Rated
These devices are intended for use as freewheeling/clamping
diodes and rectifiers in a variety of switching power supplies
and other power switching applications. Their low stored
charge and ultrafast soft recovery minimize ringing and
electrical noise in many power switching circuits, reducing
power loss in the switching transistors.
• Planar Construction
Applications
• Switching Power Supplies
• Power Switching Circuits
• General Purpose
Formerly developmental type TA49034.
Ordering Information
Packaging
PART NUMBER
PACKAGE
TO-251
TO-252
BRAND
RUR420
RUR420
JEDEC STYLE TO-251
RURD420
ANODE
RURD420S
CATHODE
NOTE: When ordering, use the entire part number. Add the suffix 9A
to obtain the TO-252 variant in tape and reel, i.e., RURD42059A.
CATHODE
(FLANGE)
Symbol
K
JEDEC STYLE TO-252
CATHODE
(FLANGE)
CATHODE
ANODE
A
o
Absolute Maximum Ratings T = 25 C, Unless Otherwise Specified
C
RURD420
RURD420S
UNITS
Peak Repetitive Reverse Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V
200
200
200
4
V
V
V
A
RRM
Working Peak Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
RWM
DC Blocking Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
R
Average Rectified Forward Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
o
F(AV)
(T = 159 C)
C
Repetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
(Square Wave, 20kHz)
8
A
A
FRM
FSM
Nonrepetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I
(Halfwave, 1 Phase, 60Hz)
40
Maximum Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P
30
10
W
D
Avalanche Energy (See Figures 9 and 10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E
mJ
AVL
o
Operating and Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T
Maximum Lead Temperature for Soldering
, T
STG
-65 to 175
C
J
o
(Leads at 0.063 in. (1.6mm) from case for 10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .T
300
260
C
L
o
Package Body for 10s, see Tech Brief 334. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T
C
PKG
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