FAIRCHILD RURD460

RURD460, RURD460S
Data Sheet
January 2002
4A, 600V Ultrafast Diodes
Features
The RURD460, and RURD460S are ultrafast diodes with soft
recovery characteristics (trr < 55ns). They have low forward
voltage drop and are silicon nitride passivated ion-implanted
epitaxial planar construction.
• Ultrafast with Soft Recovery . . . . . . . . . . . . . . . . . . . <55ns
• Operating Temperature . . . . . . . . . . . . . . . . . . . . . . 175oC
• Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600V
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.
• Avalanche Energy Rated
Formerly developmental type TA49035.
• Power Switching Circuits
Applications
• Switching Power Supplies
• General Purpose
Ordering Information
PART NUMBER
• Planar Construction
PACKAGE
BRAND
RURD460
TO-251
RUR460
RURD460S
TO-252
RUR460
Packaging
JEDEC STYLE TO-251
ANODE
CATHODE
NOTE: When ordering, use the entire part number. Add suffix 9A to
obtain the TO-252 variant in tape and reel, i.e., RURD460S9A.
CATHODE
(FLANGE)
Symbol
K
JEDEC STYLE TO-252
A
CATHODE
CATHODE
(FLANGE)
ANODE
Absolute Maximum Ratings
TC = 25oC, Unless Otherwise Specified
Peak Repetitive Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VRRM
Working Peak Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VRWM
DC Blocking Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VR
Average Rectified Forward Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IF(AV)
(TC = 160oC)
Repetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IFRM
(Square Wave, 20kHz)
Nonrepetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IFSM
(Halfwave, 1 phase, 60Hz)
Maximum Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PD
Avalanche Energy (See Figures 9 and 10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EAVL
Operating and Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TSTG, TJ
Maximum Lead Temperature for Soldering
Leads at 0.063 in. (1.6mm) from case for 10s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TL
Package Body for 10s, see Tech Brief 334. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TPKG
©2002 Fairchild Semiconductor Corporation
RURD460
RURD460S
600
600
600
4
UNITS
V
V
V
A
8
A
40
A
50
10
-65 to 175
W
mJ
oC
300
260
oC
oC
RURD460, RURD460S Rev. B
RURD460, RURD460S
TC = 25oC, Unless Otherwise Specified
Electrical Specifications
SYMBOL
TEST CONDITION
MIN
TYP
MAX
UNITS
IF = 4A
-
-
1.5
V
IF = 4A, TC = 150oC
-
-
1.2
V
VR = 600V
-
-
100
µA
VR = 600V, TC = 150oC
-
-
500
µA
IF = 1A, dIF/dt = 100A/µs
-
-
55
ns
IF = 4A, dIF/dt = 100A/µs
-
-
60
ns
ta
IF = 4A, dIF/dt = 100A/µs
-
32
-
ns
tb
IF = 4A, dIF/dt = 100A/µs
-
15
-
ns
QRR
IF = 4A, dIF/dt = 100A/µs
-
50
-
nC
VR = 10V, IF = 0A
-
15
-
pF
-
-
3
oC/W
VF
IR
trr
CJ
RθJC
DEFINITIONS
VF = Instantaneous forward voltage (pw = 300µs, D = 2%).
IR = Instantaneous reverse current.
trr = Reverse recovery time (See Figure 8), summation of ta + tb.
ta = Time to reach peak reverse current (See Figure 8).
tb = Time from peak IRM to projected zero crossing of IRM based on a straight line from peak IRM through 25% of IRM (See Figure 8).
QRR = Reverse recovery time.
CJ = Junction capacitance.
RθJC = Thermal resistance junction to case.
pw = Pulse width.
D = Duty cycle.
Typical Performance Curves
500
20
IR , REVERSE CURRENT (µA)
IF , FORWARD CURRENT (A)
175oC
175oC
10
100oC
25oC
1
0.5
100
10
100oC
1
0.1
25oC
0.01
0
0.5
1
1.5
2
2.5
VF , FORWARD VOLTAGE (V)
FIGURE 1. FORWARD CURRENT vs FORWARD VOLTAGE
©2002 Fairchild Semiconductor Corporation
0
100
200
300
400
500
600
VR , REVERSE VOLTAGE (V)
FIGURE 2. REVERSE CURRENT vs REVERSE VOLTAGE
RURD460, RURD460S Rev. B
RURD460, RURD460S
Typical Performance Curves
(Continued)
50
100
TC = 25oC, dIF/dt = 100A/µs
TC = 100oC, dIF/dt = 100A/µs
trr
30
ta
20
tb
10
0
0.5
80
t, RECOVERY TIMES (ns)
t, RECOVERY TIMES (ns)
40
1
60
tb
20
0
4
0.5
IF(AV) , AVERAGE FORWARD CURRENT (A)
TC = 175oC, dIF/dt = 100A/µs
125
t, RECOVERY TIMES (ns)
4
FIGURE 4. trr , ta AND tb CURVES vs FORWARD CURRENT
150
trr
75
tb
ta
25
0
0.5
1
IF , FORWARD CURRENT (A)
FIGURE 3. trr , ta AND tb CURVES vs FORWARD CURRENT
50
ta
40
IF , FORWARD CURRENT (A)
100
trr
4
1
5
4
DC
3
SQ. WAVE
2
1
0
150
155
160
165
170
175
TC , CASE TEMPERATURE (oC)
IF , FORWARD CURRENT (A)
FIGURE 5. trr , ta AND tb CURVES vs FORWARD CURRENT
FIGURE 6. CURRENT DERATING CURVE
Test Circuits and Waveforms
VGE AMPLITUDE AND
RG CONTROL dIF/dt
t1 AND t2 CONTROL IF
L
DUT
RG
VGE
CURRENT
SENSE
+
IGBT
t1
IF
-
VDD
dIF
dt
trr
ta
tb
0
0.25 IRM
t2
IRM
FIGURE 7. trr TEST CIRCUIT
©2002 Fairchild Semiconductor Corporation
FIGURE 8. trr WAVEFORMS AND DEFINITIONS
RURD460, RURD460S Rev. B
RURD460, RURD460S
Test Circuits and Waveforms
(Continued)
I = 1A
L = 20mH
R < 0.1Ω
EAVL = 1/2LI2 [VR(AVL) /(VR(AVL) - VDD)]
Q1 = IGBT (BVCES > DUT VR(AVL))
VAVL
L
CURRENT
SENSE
R
+
VDD
IL
IL
I V
Q1
VDD
DUT
t0
FIGURE 9. AVALANCHE ENERGY TEST CIRCUIT
©2002 Fairchild Semiconductor Corporation
t1
t2
t
FIGURE 10. AVALANCHE CURRENT AND VOLTAGE
WAVEFORMS
RURD460, RURD460S Rev. B
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is
not intended to be an exhaustive list of all such trademarks.
ACEx™
Bottomless™
CoolFET™
CROSSVOLT™
DenseTrench™
DOME™
EcoSPARK™
E2CMOSTM
EnSignaTM
FACT™
FACT Quiet Series™
FAST 
FASTr™
FRFET™
GlobalOptoisolator™
GTO™
HiSeC™
ISOPLANAR™
LittleFET™
MicroFET™
MicroPak™
MICROWIRE™
OPTOLOGIC™
OPTOPLANAR™
PACMAN™
POP™
Power247™
PowerTrench 
QFET™
QS™
QT Optoelectronics™
Quiet Series™
SILENT SWITCHER 
SMART START™
STAR*POWER™
Stealth™
SuperSOT™-3
SuperSOT™-6
SuperSOT™-8
SyncFET™
TinyLogic™
TruTranslation™
UHC™
UltraFET 
VCX™
STAR*POWER is used under license
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NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD
DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT
OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT
RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
1. Life support devices or systems are devices or
2. A critical component is any component of a life
systems which, (a) are intended for surgical implant into
support device or system whose failure to perform can
the body, or (b) support or sustain life, or (c) whose
be reasonably expected to cause the failure of the life
failure to perform when properly used in accordance
support device or system, or to affect its safety or
with instructions for use provided in the labeling, can be
effectiveness.
reasonably expected to result in significant injury to the
user.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification
Product Status
Definition
Advance Information
Formative or
In Design
This datasheet contains the design specifications for
product development. Specifications may change in
any manner without notice.
Preliminary
First Production
This datasheet contains preliminary data, and
supplementary data will be published at a later date.
Fairchild Semiconductor reserves the right to make
changes at any time without notice in order to improve
design.
No Identification Needed
Full Production
This datasheet contains final specifications. Fairchild
Semiconductor reserves the right to make changes at
any time without notice in order to improve design.
Obsolete
Not In Production
This datasheet contains specifications on a product
that has been discontinued by Fairchild semiconductor.
The datasheet is printed for reference information only.
Rev. H4