S E M I C O N D U C T O R
RURD640, RURD650, RURD660,
RURD640S, RURD650S, RURD660S
6A, 400V - 600V Ultrafast Diodes
Package
JEDEC STYLE TO-251
ANODE
CATHODE
April 1995
Features
• Ultrafast with Soft Recovery . . . . . . . . . . . . . . . . . . . . . .<55ns
• Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . .+175
o
C
• Reverse Voltage Up To . . . . . . . . . . . . . . . . . . . . . . . . . . .600V
• Avalanche Energy Rated
• Planar Construction
Applications
• Switching Power Supplies
• Power Switching Circuits
• General Purpose
JEDEC STYLE TO-252
CATHODE
(FLANGE)
Description
RURD640, RURD650, RURD660, RURD640S, RURD650S and
RURD660S (TA49038) are ultrafast diodes with soft recovery char-
acteristics (t
RR
< 55ns). 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.
PACKAGING AVAILABILITY
PART NUMBER
RURD640
RURD650
RURD660
RURD640S
RURD650S
RURD660S
PACKAGE
TO-251
TO-251
TO-251
TO-252
TO-252
TO-252
BRAND
RUR640
RUR650
RUR660
RUR640
RUR650
RUR660
CATHODE
CATHODE
(FLANGE)
ANODE
Symbol
K
A
NOTE: When ordering, use the entire part number. Add the suffix 9A to obtain
the TO-252 variant in the tape and reel, i.e., RURD640S9A.
Absolute Maximum Ratings
T
C
= +25
o
C, Unless Otherwise Specified
RURD640
RURD640S
400
400
400
6
12
60
50
10
-65 to +175
RURD650
RURD650S
500
500
500
6
12
60
50
10
-65 to +175
RURD660
RURD660S
600
600
600
6
12
60
50
10
-65 to +175
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
= +155
o
C)
Repetitive Peak Surge Current. . . . . . . . . . . . . . . . . . . . .I
FSM
(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
Copyright
©
Harris Corporation 1995
5-37
File Number
3750.1
Specifications RURD640, RURD650, RURD660, RURD640S, RURD650S, RURD660S
Electrical Specifications
SYMBOL
V
F
T
C
= +25
o
C, Unless Otherwise Specified
RURD640, RURD640S
TEST CONDITION
I
F
= 6A, T
C
= +25
o
C
I
F
= 6A, T
C
= +150
o
C
I
R
V
R
= 400V, T
C
= +25
o
C
V
R
= 500V, T
C
= +25
o
C
V
R
= 600V, T
C
= +25
o
C
I
R
V
R
= 400V, T
C
= +150
o
C
V
R
= 500V, T
C
= +150
o
C
V
R
= 600V, T
C
= +150
o
C
t
RR
I
F
= 1A, dI
F
/dt = 200A/µs
I
F
= 6A, dI
F
/dt = 200A/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 2), summation of t
A
+ t
B
.
t
A
= Time to reach peak reverse current (See Figure 2).
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 2).
Q
RR
= Reverse recovery charge.
C
J
= Junction capacitance.
R
θJC
= Thermal resistance junction to case.
E
AVL
= Controlled avalanche energy. (See Figures 10 and 11).
pw = Pulse width.
D = Duty cycle.
I
F
= 6A, dI
F
/dt = 200A/µs
I
F
= 6A, dI
F
/dt = 200A/µs
I
F
= 6A, dI
F
/dt = 200A/µs
V
R
= 10V, I
F
= 0A
MIN
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TYP
-
-
-
-
-
-
-
-
-
-
28
16
150
25
-
MAX
1.5
1.2
100
-
-
500
-
-
55
60
-
-
-
-
3
RURD650, RURD650S
MIN
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TYP
-
-
-
-
-
-
-
-
-
-
28
16
150
25
-
MAX
1.5
1.2
-
100
-
-
500
-
55
60
-
-
-
-
3
RURD660, RURD660S
MIN
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TYP
-
-
-
-
-
-
-
-
-
-
28
16
150
25
-
MAX
1.5
1.2
-
-
100
-
-
500
55
60
-
-
-
-
3
UNITS
V
V
µA
µA
µA
µA
µA
µA
ns
ns
ns
ns
nC
pF
o
C/W
V
1
AMPLITUDE CONTROLS I
F
V
2
AMPLITUDE CONTROLS dI
F
/dt
L
1
= SELF INDUCTANCE OF
R
4
+ L
LOOP
R
1
Q
1
+V
1
0
t
2
t
1
R
2
+V
3
Q
2
t
1
≥
5t
A(MAX)
t
2
> t
RR
t
3
> 0
L
1
t
A(MIN)
≤
R
4
10
L
LOOP
DUT
Q
4
0.25 I
RM
0
I
F
dI
F
dt
t
A
t
RR
t
B
t
3
C1
0
-V
2
R
3
Q
3
-V
4
V
RM
R
4
I
RM
V
R
FIGURE 1. t
RR
TEST CIRCUIT
FIGURE 2. t
RR
WAVEFORMS AND DEFINITIONS
5-38
RURD640, RURD650, RURD660, RURD640S, RURD650S, RURD660S
Typical Performance Curves
30
500
100
I
F
, FORWARD CURRENT (A)
10
I
R
, REVERSE CURRENT (µA)
+175
o
C
10
+100
o
C
1
+100
o
C
+175
o
C
1
+25
o
C
0.1
+25
o
C
0.01
0.5
0
0.5
1
1.5
2
2.5
0.001
0
100
200
300
400
500
600
V
R
, REVERSE VOLTAGE (V)
V
F
, FORWARD VOLTAGE (V)
FIGURE 3. TYPICAL FORWARD CURRENT vs FORWARD
VOLTAGE DROP
T
C
= +25
o
C, dI
F
/dt = 200A/µs
50
FIGURE 4. TYPICAL REVERSE CURRENT vs REVERSE
VOLTAGE
T
C
= +100
o
C, dI
F
/dt = 200A/µs
90
75
t, RECOVERY TIMES (ns)
t, RECOVERY TIMES (ns)
40
t
RR
60
45
30
30
t
RR
20
t
A
t
A
t
B
10
t
B
15
0
0.5
0
0.5
1
I
F
, FORWARD CURRENT (A)
6
1
I
F
, FORWARD CURRENT (A)
6
FIGURE 5. TYPICAL t
RR
, t
A
AND t
B
CURVES vs FORWARD
CURRENT AT +25
o
C
FIGURE 6. TYPICAL t
RR
, t
A
AND t
B
CURVES vs FORWARD
CURRENT AT +100
o
C
I
F(AV)
, AVERAGE FORWARD CURRENT (A)
100
T
C
= +175
o
C, dI
F
/dt = 200A/µs
6
5
DC
4
SQ. WAVE
3
2
1
0
145
t, RECOVERY TIMES (ns)
80
t
RR
60
40
t
A
t
B
20
0
0.5
1
I
F
, FORWARD CURRENT (A)
6
150
155
160
165
(
o
C)
170
175
T
C
, CASE TEMPERATURE
FIGURE 7. TYPICAL t
RR
, t
A
AND t
B
CURVES vs FORWARD
CURRENT AT +175
o
C
FIGURE 8. CURRENT DERATING CURVE FOR ALL TYPES
5-39
RURD640, RURD650, RURD660, RURD640S, RURD650S, RURD660S
Typical Performance Curves
(Continued)
75
C
J
, JUNCTION CAPACITANCE (pF)
60
45
30
15
0
0
50
100
150
200
V
R
, REVERSE VOLTAGE (V)
FIGURE 9. TYPICAL JUNCTION CAPACITANCE vs REVERSE VOLTAGE
I
MAX
= 1A
L = 40mH
R < 0.1Ω
E
AVL
= 1/2LI
2
[V
AVL
/(V
AVL
- V
DD
)]
Q
1
AND Q
2
ARE 1000V MOSFETs
Q
1
L
R
+
V
DD
130Ω
1MΩ
DUT
VAVL
12V
Q
2
130Ω
CURRENT
SENSE
V
DD
-
I
L
I V
I
L
12V
t
0
t
1
t
2
t
FIGURE 10. AVALANCHE ENERGY TEST CIRCUIT
FIGURE 11. AVALANCHE CURRENT AND VOLTAGE
WAVEFORMS
5-40
测试/测量
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