1
File Number
4033.1
1-888-INTERSIL or 321-724-7143 | Copyright Intersil Corporation 2000
RURD840, RURD860, RURD840S, RURD860S
8A, 400V - 600V Ultrafast Diodes
The RURD840, RURD860, RURD840S and RURD860S are
ultrafast dual diodes with soft recovery characteristics
(t
rr
< 60ns). 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 TA09616.
Symbol
Features
Ultrafast with Soft Recovery . . . . . . . . . . . . . . . . . . . <60ns
Operating Temperature. . . . . . . . . . . . . . . . . . . . . . .175
o
C
Reverse Voltage Up To . . . . . . . . . . . . . . . . . . . . . . . .600V
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
RURD840
TO-251
RUR840
RURD860
TO-251
RUR860
RURD840S
TO-252
RUR840
RURD860S
TO-252
RUR860
NOTE: When ordering, use the entire part number. Add the suffix 9A
to obtain the TO-252 variant in tape and reel, e.g. RURD860S9A.
K
A
CATHODE
(FLANGE)
ANODE
CATHODE
ANODE
CATHODE
CATHODE
(FLANGE)
Absolute Maximum Ratings
T
C
= 25
o
C, Unless Otherwise Specified
RURD840
RURD840S
RURD860
RURD860S
UNITS
Peak Repetitive Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
RRM
400
600
V
Working Peak Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
RWM
400
600
V
DC Blocking Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V
R
400
600
V
Average Rectified Forward Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
F(AV)
(T
C
= 155
o
C)
8
8
A
Repetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
FRM
(Square Wave, 20kHz)
16
16
A
Nonrepetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
FSM
(Halfwave, 1 Phase, 60Hz)
40
40
A
Maximum Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P
D
75
75
W
Avalanche Energy (See Figures 10 and 11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E
AVL
20
20
mJ
Operating and Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T
STG
, T
J
-65 to 175
-65 to 175
o
C
Maximum Lead Temperature for Soldering
Leads at 0.063in (1.6mm) from Case for 10s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T
L
300
300
o
C
Package Body for 10s, See Tech Brief 334 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T
PKG
260
260
o
C
Data Sheet
January 2000
2
Electrical Specifications
T
C
= 25
o
C, Unless Otherwise Specified
SYMBOL
TEST CONDITION
RURD840, RURD840S
RURD860, RURD860S
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
V
F
I
F
= 8A
-
-
1.5
-
-
1.5
V
I
F
= 8A, T
C
= 150
o
C
-
-
1.3
-
-
1.3
V
I
R
V
R
= 400V
-
-
100
-
-
-
A
V
R
= 600V
-
-
-
-
-
100
A
V
R
= 400V, T
C
= 150
o
C
-
-
500
-
-
-
A
V
R
= 600V, T
C
= 150
o
C
-
-
-
-
-
500
A
t
rr
I
F
= 1A, dI
F
/dt = 200A/
s
-
-
60
-
-
60
ns
I
F
= 8A, dI
F
/dt = 200A/
s
-
-
70
-
-
70
ns
t
a
I
F
= 8A, dI
F
/dt = 200A/
s
-
32
-
-
32
-
ns
t
b
I
F
= 8A, dI
F
/dt = 200A/
s
-
21
-
-
21
-
ns
Q
RR
I
F
= 8A, dI
F
/dt = 200A/
s
-
195
-
-
195
-
nC
C
J
V
R
= 10V, I
F
= 0A
-
25
-
-
25
-
pF
R
JC
-
-
2
-
-
2
o
C/W
DEFINITIONS
V
F
= Instantaneous forward voltage (pw = 300
s, 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
JC
= 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
V
F
, FORWARD VOLTAGE (V)
I
F
, FOR
W
ARD CURRENT (A)
1
40
0.5
10
0
0.5
1
1.5
2
2.5
175
o
C
25
o
C
100
o
C
V
R
, REVERSE VOLTAGE (V)
0
200
400
600
300
500
500
0.01
0.1
1
10
100
100
175
o
C
100
o
C
25
o
C
I
R
, REVERSE CURRENT (
A)
RURD840, RURD860, RURD840S, RURD860S
3
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
FIGURE 5. t
rr
, t
a
AND t
b
CURVES vs FORWARD CURRENT
FIGURE 6. CURRENT DERATING CURVE
FIGURE 7. JUNCTION CAPACITANCE vs REVERSE VOLTAGE
Typical Performance Curves
(Continued)
trr
I
F
, FORWARD CURRENT (A)
1
0
40
60
50
0.5
8
30
10
t, RECO
VER
Y TIMES (ns)
ta
tb
20
4
T
C
= 25
o
C, dI
F
/dt = 200A/
s
20
40
60
tb
0.5
0
8
1
4
80
ta
trr
100
I
F
, FORWARD CURRENT (A)
t, RECO
VER
Y TIMES (ns)
T
C
= 100
o
C, dI
F
/dt = 200A/
s
25
50
75
tb
0.5
0
8
1
4
100
ta
trr
125
I
F
, FORWARD CURRENT (A)
t, RECO
VER
Y TIMES (ns)
T
C
= 175
o
C, dI
F
/dt = 200A/
s
2
0
140
145
155
175
165
4
6
8
T
C
, CASE TEMPERATURE (
o
C)
I
F(A
V)
, A
VERA
GE FOR
W
ARD CURRENT (A)
150
DC
SQ. WAVE
160
170
V
R
, REVERSE VOLTAGE (V)
40
20
0
80
0
50
100
150
200
C
J
, JUNCTION CAP
A
CIT
ANCE (pF)
100
60
RURD840, RURD860, RURD840S, RURD860S
4
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. t
rr
TEST CIRCUIT
FIGURE 9. t
rr
WAVEFORMS AND DEFINITIONS
FIGURE 10. AVALANCHE ENERGY TEST CIRCUIT
FIGURE 11. AVALANCHE CURRENT AND VOLTAGE
WAVEFORMS
R
G
L
V
DD
IGBT
CURRENT
SENSE
DUT
V
GE
t
1
t
2
V
GE
AMPLITUDE AND
t
1 AND
t
2
CONTROL I
F
R
G
CONTROL dI
F
/dt
+
-
dt
dI
F
I
F
trr
ta
tb
0
I
RM
0.25 I
RM
DUT
CURRENT
SENSE
+
L
R
V
DD
R < 0.1
E
AVL
= 1/2LI
2
[V
R(AVL)
/(V
R(AVL)
- V
DD
)]
Q
1
= IGBT (BV
CES
> DUT V
R(AVL)
)
-
V
DD
Q
1
I = 1A
L = 40mH
I V
t
0
t
1
t
2
I
L
V
AVL
t
I
L
RURD840, RURD860, RURD840S, RURD860S
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