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File Number 3641.3
1-888-INTERSIL or 321-724-7143 |Copyright © Intersil Corporation 2000
RURD4120, RURD4120S
4A, 1200V Ultrafast Diodes
The RURD4120 and RURD4120S are ultrafast diodes with
soft recovery characteristics (trr < 70ns). They have low
forward voltage drop and are silicon nitride passivated
ion-implanted epitaxial planar construction.
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.
Formerly developmental type TA49036.
Symbol
Features
• Ultrafast with Soft Recovery. . . . . . . . . . . . . . . . . . .<70ns
• Operating Temperature. . . . . . . . . . . . . . . . . . . . . . .175oC
• Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . .1200V
• Avalanche Energy Rated
• Planar Construction
Applications
• Switching Power Supplies
• Power Switching Circuits
• General Purpose
Packaging JEDEC STYLE TO-251
JEDEC STYLE TO-252
Ordering Information
PART NUMBER PACKAGE BRAND
RURD4120 TO-251 UR4120
RURD4120S TO-252 UR4120
NOTE: When ordering, usetheentirepart number. Addthesuffix 9A
to obtain the TO-252 variant in the tape and reel, i.e.,
RURD4120S9A.
K
A
ANODE
CATHODE
CATHODE
(FLANGE)
ANODE
CATHODE
CATHODE
(FLANGE)
Absolute Maximum Ratings TC = 25oC, Unless Otherwise Specified
RURD4120, RURD4120S UNITS
Peak Repetitive Reverse Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VRRM 1200 V
Working Peak Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VRWM 1200 V
DC Blocking Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VR1200 V
Average Rectified Forward Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IF(AV)
(TC = 152oC) 4A
Repetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IFRM
(Square Wave, 20kHz) 8A
Nonrepetitive Peak Surge Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IFSM
(Halfwave, 1 Phase, 60Hz) 40 A
Maximum Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PD50 W
Avalanche Energy (See Figures 10 and 11).. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EAVL 10 mJ
Operating and Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TSTG, TJ-65 to 175 oC
Data Sheet January 2000
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Electrical Specifications TC = 25oC, Unless Otherwise Specified
SYMBOL TEST CONDITION MIN TYP MAX UNITS
VFIF = 4A - - 2.1 V
IF = 4A, TC = 150oC - - 1.9 V
IRVR = 1200V - - 100 µA
VR = 1200V, TC = 150oC - - 500 µA
trr IF = 1A, dIF/dt = 200A/µs--70ns
IF = 4A, dIF/dt = 200A/µs--90ns
taIF = 4A, dIF/dt = 200A/µs - 40 - ns
tbIF = 4A, dIF/dt = 200A/µs - 28 - ns
QRR IF = 4A, dIF/dt = 200A/µs - 335 - nC
CJVR = 10V, IF = 0A - 15 - pF
RθJC --3
oC/W
DEFINITIONS
VF = Instantaneous forward voltage (pw = 300µs, D = 2%).
IR = Instantaneous reverse current.
trr = Reverse recovery time (See Figure 9), summation of ta+t
b.
ta = Time to reach peak reverse current (See Figure 9).
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 9).
QRR = Reverse recovery time.
CJ = Junction capacitance.
RθJC = Thermal resistance junction to case.
pw = Pulse width.
D = Duty cycle.
Typical Performance Curves
FIGURE 1. FORWARD CURRENT vs FORWARD VOLTAGE FIGURE 2. REVERSE CURRENT vs REVERSE VOLTAGE
VF, FORWARD VOLTAGE (V)
IF, FORWARD CURRENT (A)
1
20
0.5
10
0 0.5 1 1.5 2 2.5 3
25oC
175oC
100oC
VR, REVERSE VOLTAGE (V)
0 400 800 1200600 1000
100
0.01
0.1
1
10
IR, REVERSE CURRENT (µA)
200
0.001
25oC
100oC
175oC
RURD4120, RURD4120S
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FIGURE 3. trr,t
aAND tbCURVES vs FORWARD CURRENT FIGURE 4. trr,t
aAND tbCURVES vs FORWARD CURRENT
FIGURE 5. trr,t
aAND tbCURVES vs FORWARD CURRENT FIGURE 6. CURRENT DERATING CURVE
FIGURE 7. JUNCTION CAPACITANCE vs REVERSE VOLTAGE
Typical Performance Curves (Continued)
IF, FORWARD CURRENT (A)
0.5
0
45
30
15
75
41
trr
60
t, RECOVERY TIMES (ns)
tb
ta
TC = 25oC, dIF/dt = 200A/µs
0.5
0
60
100
41
t, RECOVERY TIMES (ns)
IF, FORWARD CURRENT (A)
tb
80
20
trr
ta
40
TC = 100oC, dIF/dt = 200A/µs
0.5
0
25
125
41
trr
tb
100
ta
t, RECOVERY TIMES (ns)
IF, FORWARD CURRENT (A)
50
75
TC = 175oC, dIF/dt = 200A/µs5
1
0
125 135 155 175165
2
3
4
TC, CASE TEMPERATURE (oC)
IF(AV), AVERAGE FORWARD CURRENT (A)
145
DC
SQ. WAVE
VR, REVERSE VOLTAGE (V)
30
15
00 50 100 150 200
75
CJ, JUNCTION CAPACITANCE (pF)
60
45
RURD4120, RURD4120S
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All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with-
out notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site www.intersil.com
Test Circuits and Waveforms
FIGURE 8. trr TEST CIRCUIT FIGURE 9. trr WAVEFORMS AND DEFINITIONS
FIGURE 10. AVALANCHE ENERGY TEST CIRCUIT FIGURE 11. AVALANCHE CURRENT AND VOLTAGE
WAVEFORMS
RG
L
VDD
IGBT
CURRENT
SENSE
DUT
VGE t1
t2
VGE AMPLITUDE AND
t1 AND t2CONTROL IF
RG CONTROL dIF/dt
+
-
dt
dIF
IFtrr
tatb
0
IRM
0.25 IRM
DUT
CURRENT
SENSE +
LR
VDD
R < 0.1Ω
EAVL = 1/2LI2 [VR(AVL)/(VR(AVL) - VDD)]
Q1= IGBT (BVCES > DUT VR(AVL))
-
VDD
Q1
I = 1A
L = 20mH
IV
t0t1t2
IL
VAVL
t
IL
RURD4120, RURD4120S
