MUR840, MUR860, RURP840, RURP860
Data Sheet
January 2002
8A, 400V - 600V Ultrafast Diodes
The MUR840, MUR860, RURP840 and RURP860 are low
forward voltage drop ultrafast recovery rectifiers (t
rr
< 60ns).
They use a glass-passivated ion-implanted, epitaxial
construction.
These devices are intended for use as output rectifiers and
flywheel diodes in a variety of high-frequency pulse-width
modulated switching regulators. Their low stored charge and
attendant fast reverse-recovery behavior minimize electrical
noise generation and in many circuits markedly reduce the
turn-on dissipation of the associated power switching
transistors.
Formerly developmental type TA09616.
Features
• Ultrafast with Soft Recovery . . . . . . . . . . . . . . . . . . . <60ns
• Operating Temperature. . . . . . . . . . . . . . . . . . . . . . .175
o
C
• Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . .600V
• Avalanche Energy Rated
• Planar Construction
Applications
• Switching Power Supplies
• Power Switching Circuits
• General Purpose
Ordering Information
PART NUMBER
MUR840
RURP840
MUR860
RURP860
PACKAGE
TO-220AC
TO-220AC
TO-220AC
TO-220AC
BRAND
MUR840
RURP840
MUR860
RURP860
Packaging
JEDEC TO-220AC
ANODE
CATHODE
CATHODE
(FLANGE)
NOTE: When ordering, use the entire part number.
Symbol
K
A
Absolute Maximum Ratings
T
C
= 25
o
C, Unless Otherwise Specified
MUR840
RURP840
400
400
400
8
16
100
75
20
-65 to 175
300
260
MUR860
RURP860
600
600
600
8
16
100
75
20
-65 to 175
300
260
UNITS
V
V
V
A
A
A
W
mJ
o
C
o
C
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
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
Maximum Lead Temperature for Soldering
Leads at 0.063 in. (1.6mm) from case for 10s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T
L
Package Body for 10s, see Tech Brief 334. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T
PKG
©2002 Fairchild Semiconductor Corporation
MUR840, MUR860, RURP840, RURP86 Rev. B
MUR840, MUR860, RURP840, RURP860
Electrical Specifications
T
C
= 25
o
C, Unless Otherwise Specified
MUR840, RURP840
SYMBOL
V
F
TEST CONDITION
I
F
= 8A
I
F
= 8A, T
C
= 150
o
C
I
R
V
R
= 400V
V
R
= 600V
V
R
= 400V, T
C
= 150
o
C
V
R
= 600V, T
C
= 150
o
C
t
rr
I
F
= 1A, dI
F
/dt = 200A/
µ
s
I
F
= 8A, dI
F
/dt = 200A/
µ
s
t
a
t
b
Q
RR
C
J
R
θ
JC
DEFINITIONS
V
F
= Instantaneous forward voltage (pw = 300
µ
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
θ
JC
= Thermal resistance junction to case.
pw = pulse width.
D = duty cycle.
I
F
= 8A, dI
F
/dt = 200A/
µ
s
I
F
= 8A, dI
F
/dt = 200A/
µ
s
I
F
= 8A, dI
F
/dt = 200A/
µ
s
V
R
= 10V, I
F
= 0A
MIN
-
-
-
-
-
-
-
-
-
-
-
-
-
TYP
-
-
-
-
-
-
-
-
32
21
195
25
-
MAX
1.3
1.0
100
-
500
-
60
70
-
-
-
-
2
MIN
-
-
-
-
-
-
-
-
-
-
-
-
-
MUR860, RURP860
TYP
-
-
-
-
-
-
-
-
32
21
195
25
-
MAX
1.5
1.2
-
100
-
500
60
70
-
-
-
-
2
UNITS
V
V
µ
A
µ
A
µ
A
µ
A
ns
ns
ns
ns
nC
pF
o
C/W
Typical Performance Curves
40
500
I
R
, REVERSE CURRENT (µA)
100
175
o
C
100
o
C
I
F
, FORWARD CURRENT (A)
10
10
100
o
C
175
o
C
1
0.5
0
25
o
C
0.5
1
1.5
2
2.5
1
0.1
25
o
C
0.01
0
100
200
300
400
500
600
V
F
, FORWARD VOLTAGE (V)
V
R
, REVERSE VOLTAGE (V)
FIGURE 1. FORWARD CURRENT vs FORWARD VOLTAGE
FIGURE 2. REVERSE CURRENT vs REVERSE VOLTAGE
©2002 Fairchild Semiconductor Corporation
MUR840, MUR860, RURP840, RURP86 Rev. B
MUR840, MUR860, RURP840, RURP860
Typical Performance Curves
60
T
C
= 25
o
C, dI
F
/dt = 200A/µs
50
t, RECOVERY TIMES (ns)
t, RECOVERY TIMES (ns)
40
80
(Continued)
100
T
C
= 100
o
C, dI
F
/dt = 200A/µs
t
rr
60
t
rr
30
20
10
0
0.5
t
a
t
b
40
t
a
t
b
20
1
I
F
, FORWARD CURRENT (A)
4
8
0
0.5
1
I
F
, FORWARD CURRENT (A)
4
8
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)
125
T
C
= 175
o
C, dI
F
/dt = 200A/µs
t, RECOVERY TIMES (ns)
100
8
DC
6
SQ. WAVE
4
t
rr
75
50
t
a
t
b
2
25
0
0.5
0
140
145
150
155
160
165
170
175
1
I
F
, FORWARD CURRENT (A)
4
8
T
C
, CASE TEMPERATURE (
o
C)
FIGURE 5. t
rr
, t
a
AND t
b
CURVES vs FORWARD CURRENT
FIGURE 6. CURRENT DERATING CURVE
100
C
J
, JUNCTION CAPACITANCE (pF)
80
60
40
20
0
0
50
100
150
200
V
R
, REVERSE VOLTAGE (V)
FIGURE 7. JUNCTION CAPACITANCE vs REVERSE VOLTAGE
©2002 Fairchild Semiconductor Corporation
MUR840, MUR860, RURP840, RURP86 Rev. B
MUR840, MUR860, RURP840, RURP860
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 = 1A
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
©2002 Fairchild Semiconductor Corporation
MUR840, MUR860, RURP840, RURP86 Rev. B
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E
2
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TM
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®
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effectiveness.
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Definition of Terms
Datasheet Identification
Advance Information
Product Status
Formative or
In Design
Definition
This datasheet contains the design specifications for
product development. Specifications may change in
any manner without notice.
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.
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Semiconductor reserves the right to make changes at
any time without notice in order to improve design.
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First Production
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The datasheet is printed for reference information only.
Rev. H4