RURU50120
Data Sheet
January 2000
File Number
3741.2
50A, 1200V Ultrafast Diode
The RURU50120 is an ultrafast diode with soft recovery
characteristics (t
rr
< 125ns). It has low forward voltage drop
and is of silicon nitride passivated ion-implanted epitaxial
planar construction.
This device is intended for use as a freewheeling/clamping
diode and rectifier in a variety of switching power supplies
and other power switching applications. Its low stored charge
and ultrafast soft recovery minimize ringing and electrical
noise in many power switching circuits, thus reducing power
loss in the switching transistors.
Formerly developmental type TA49099.
Features
• Ultrafast with Soft Recovery . . . . . . . . . . . . . . . . . < 125ns
• Operating Temperature. . . . . . . . . . . . . . . . . . . . . . .175
o
C
• Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . .1200V
• Avalanche Energy Rated
• Planar Construction
Applications
• Switching Power Supplies
• Power Switching Circuits
• General Purpose
Ordering Information
PART NUMBER
RURU50120
PACKAGE
TO-218
BRAND
RURU50120
Packaging
SINGLE LEAD JEDEC STYLE TO-218
NOTE: When ordering, use the entire part number.
ANODE
CATHODE
(FLANGE)
Symbol
K
A
Absolute Maximum Ratings
T
C
= 25
o
C, Unless Otherwise Specified
RURU50120
UNITS
V
V
V
A
A
A
W
mJ
o
C
Peak Repetitive Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
RRM
Working Peak Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
RWM
DC Blocking Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
R
Average Rectified Forward Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
F(AV)
(T
C
= 85
o
C)
Repetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
FRM
(Square Wave, 20kHz)
Nonrepetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
FSM
(Halfwave, 1 Phase, 60Hz)
Maximum Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P
D
Avalanche Energy (See Figures 10 and 11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E
AVL
Operating and Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T
STG
, T
J
1200
1200
1200
50
100
500
170
50
-65 to 175
1
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Intersil Corporation 2000
RURU50120
Electrical Specifications
SYMBOL
V
F
I
F
= 50A
I
F
= 50A, T
C
= 150
o
C
I
R
V
R
= 1200V
V
R
= 1200V, T
C
= 150
o
C
t
rr
I
F
= 1A, dI
F
/dt = 100A/µs
I
F
= 50A, dI
F
/dt = 100A/µs
t
a
t
b
Q
RR
C
J
R
θJC
DEFINITIONS
V
F
= Instantaneous forward voltage (pw = 300µs, D = 2%).
I
R
= Instantaneous reverse current.
t
rr
= Reverse recovery time (See Figure 9), summation of t
a
+ t
b
.
t
a
= Time to reach peak reverse current (See Figure 9).
t
b
= Time from peak I
RM
to projected zero crossing of I
RM
based on a straight line from peak I
RM
through 25% of I
RM
(See Figure 9).
Q
RR
= Reverse recovery charge.
C
J
= Junction Capacitance.
R
θJC
= Thermal resistance junction to case.
pw = pulse width.
D = duty cycle.
I
F
= 50A, dI
F
/dt = 100A/µs
I
F
= 50A, dI
F
/dt = 100A/µs
I
F
= 50A, dI
F
/dt = 100A/µs
V
R
= 10V, I
F
= 0A
T
C
= 25
o
C, Unless Otherwise Specified
TEST CONDITION
MIN
-
-
-
-
-
-
-
-
-
-
-
TYP
-
-
-
-
-
-
95
70
800
160
-
MAX
2.1
1.9
250
2.0
125
200
-
-
-
-
0.9
UNITS
V
V
µA
mA
ns
ns
ns
ns
nC
pF
o
C/W
Typical Performance Curves
250
100
1000
I
R
, REVERSE CURRENT (µA)
175
o
C
I
F
, FORWARD CURRENT (A)
100
100
o
C
100
o
C
10
175
o
C
25
o
C
10
1
0.1
25
o
C
1
0
0.5
1
1.5
2
2.5
3
V
F
, FORWARD VOLTAGE (V)
0.01
0
200
400
600
800
1000
1200
V
R
, REVERSE VOLTAGE (V)
FIGURE 1. FORWARD CURRENT vs FORWARD VOLTAGE
FIGURE 2. REVERSE CURRENT vs REVERSE VOLTAGE
2
RURU50120
Typical Performance Curves
200
T
C
= 25
o
C, dI
F
/dt = 100A/µs
t, RECOVERY TIMES (ns)
150
trr
t, RECOVERY TIMES (ns)
400
(Continued)
500
T
C
= 100
o
C, dI
F
/dt = 100A/µs
300
trr
200
tb
ta
100
ta
tb
50
100
0
1
5
10
50
I
F
, FORWARD CURRENT (A)
0
1
5
10
50
I
F
, FORWARD CURRENT (A)
FIGURE 3. t
rr
, t
a
AND t
b
CURVES vs FORWARD CURRENT
FIGURE 4. t
rr
, t
a
AND t
b
CURVES vs FORWARD CURRENT
I
F(AV)
, AVERAGE FORWARD CURRENT (A)
750
50
DC
40
SQ. WAVE
30
T
C
= 175
o
C, dI
F
/dt = 100A/µs
t, RECOVERY TIMES (ns)
600
450
trr
tb
300
20
150
ta
10
0
1
5
10
50
I
F
, FORWARD CURRENT (A)
0
25
50
75
100
125
150
175
T
C
, CASE TEMPERATURE (
o
C)
FIGURE 5. t
rr
, t
a
AND t
b
CURVES vs FORWARD CURRENT
FIGURE 6. CURRENT DERATING CURVE
600
C
J
, JUNCTION CAPACITANCE (pF)
500
400
300
200
100
0
0
50
100
150
200
V
R
, REVERSE VOLTAGE (V)
FIGURE 7. JUNCTION CAPACITANCE vs REVERSE VOLTAGE
3
RURU50120
Test Circuits and Waveforms
V
GE
AMPLITUDE AND
R
G
CONTROL dI
F
/dt
t
1 AND
t
2
CONTROL I
F
L
DUT
R
G
V
GE
t
1
t
2
CURRENT
SENSE
+
V
DD
0
I
F
dI
F
dt
ta
trr
tb
IGBT
-
0.25 I
RM
I
RM
FIGURE 8. t
rr
TEST CIRCUIT
I = 1.6A
L = 40mH
R < 0.1Ω
E
AVL
= 1/2LI
2
[V
R(AVL)
/(V
R(AVL)
- V
DD
)]
Q
1
= IGBT (BV
CES
> DUT V
R(AVL)
)
L
CURRENT
SENSE
Q
1
V
DD
DUT
R
+
V
DD
I V
FIGURE 9. t
rr
WAVEFORMS AND DEFINITIONS
V
AVL
I
L
I
L
-
t
0
t
1
t
2
t
FIGURE 10. AVALANCHE ENERGY TEST CIRCUIT
FIGURE 11. AVALANCHE CURRENT AND VOLTAGE
WAVEFORMS
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
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