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Ultrafast Rectifier
Bulletin PD-20729 rev. D 12/05
MUR2020CT
MURB2020CT
MURB2020CT-1
Features
• Ultrafast Recovery Time
• Low Forward Voltage Drop
• Low Leakage Current
• 175°C Operating Junction Temperature
Description/ Applications
International Rectifier's MUR.. series are the state of the art Ultra fast recovery rectifiers specifically designed with
optimized performance of forward voltage drop and ultra fast recovery time.
The planar structure and the platinum doped life time control, guarantee the best overall performance, ruggedness
and reliability characteristics.
These devices are intended for use in the output rectification stage of SMPS, UPS, DC-DC converters as well as
free-wheeling diode in low voltage inverters and chopper motor drives.
Their extremely optimized stored charge and low recovery current minimize the switching losses and reduce over
dissipation in the switching element and snubbers.
t
= 25ns
rr
I
= 20Amp
F(AV)
VR = 200V
Absolute Maximum Ratings
Parameters Max Units
V
RRM
I
F(AV)
I
FSM
I
FM
TJ, T
Peak Repetitive Peak Reverse Voltage 200 V
Average Rectified Forward Current Per Leg 10 A
Total Device, (Rated VR ), TC = 145°C Total Device 20
Non Repetitive Peak Surge Current Per Leg 100
Peak Repetitive Forward Current Per Leg 20
(Rated VR , Square wave, 20 KHz), TC = 145°C
Operating Junction and Storage Temperatures -65 to 175 °C
STG
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MUR2020CT
TO-220AB
Case Styles
MURB2020CT
D2PAK
MURB2020CT-1
TO-262
1
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MUR2020CT, MURB2020CT, MURB2020CT-1
Bulletin PD-20729 rev. D 12/05
Electrical Characteristics @ T
= 25°C (unless otherwise specified)
J
Parameters Min Typ Max Units Test Conditions
VBR, VrBreakdown Voltage, 200 - - V IR = 100µA
Blocking Voltage
V
F
Forward Voltage - - 0.85 V IF = 8A, TJ = 125°C
- - 1.15 V IF = 16A, TJ = 25°C
- - 1.05 V IF = 16A, TJ = 125°C
I
R
Reverse Leakage Current - - 15 µA VR = VR Rated
- - 250 µA TJ = 150°C, VR = VR Rated
C
T
L
S
Junction Capacitance - 55 - pF VR = 200V
Series Inductance - 8.0 - nH .
Measured lead to lead 5mm from package body
Dynamic Recovery Characteristics @ TJ = 25°C (unless otherwise specified)
Parameters Min Typ Max Units Test Conditions
t
rr
I
RRM
Q
Reverse Recovery Time --35 ns IF = 1.0A, diF/dt = 50A/µs, VR = 30V
--25 IF = 0.5A, IR = 1.0A, I
-21- TJ = 25°C
35 TJ = 125°C
Peak Recovery Current - 1.9 - A TJ = 25°C
- 4.8 - TJ = 125°C
Reverse Recovery Charge - 25 - nC TJ = 25°C
rr
-78- TJ = 125°C
= 0.25A
REC
IF = 10A
VR = 160V
diF /dt = 200A/µs
Thermal - Mechanical Characteristics
Parameters Min Typ Max Units
T
J
T
Stg
R
thJC
R
thJA
R
thCS
Wt Weight - 2.0 - g
c Mounting Surface, Flat, Smooth and Greased
2
Max. Junction Temperature Range - - - 65 to 175 °C
Max. Storage Temperature Range - - - 65 to 175
Thermal Resistance, Junction to Case Per Leg - - 2.5 °C/W
Thermal Resistance, Junction to Ambient Per Leg - - 50
c
Thermal Resistance, Case to Heatsink - 0.5 -
- 0.07 - (oz)
Mounting Torque 6.0 - 12 Kg-cm
5.0 - 10 lbf.in
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MUR2020CT, MURB2020CT, MURB2020CT-1
Bulletin PD-20729 rev. D 12/05
100
(A)
10
F
1
Instantaneous Forward Current - I
T = 175˚C
J
T = 125˚C
J
T = 25˚C
J
100
T = 175˚C
J
10
(µA)
R
1
150˚C
125˚C
100˚C
0.1
Reverse Current - I
0.01
0.001
0 50 100 150 200 250
25˚C
Reverse Voltage - VR (V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage
1000
(pF)
T
T = 25˚C
J
100
0.1
0 0.4 0.8 1.2 1.6 2
Forward Voltage Drop - VFM (V)
Fig. 1 - Typical Forward Voltage Drop Characteristics
10
(°C/W)
thJC
1
D = 0.50
D = 0.20
D = 0.10
D = 0.05
D = 0.02
D = 0.01
0.1
Single Pulse
Thermal Impedance Z
0.01
0.00001 0.0001 0.001 0.01 0.1 1
(Thermal Resistance)
t1, Rectangular Pulse Duration (Seconds)
Fig. 4 - Max. Thermal Impedance Z
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Junction Capacitance - C
10
1 10 100 1000
Reverse Voltage - VR (V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
P
DM
t
1
t
2
Notes:
1. Duty factor D = t1/ t2
2. Peak Tj = Pdm x ZthJC + Tc
Characteristics
thJC
3
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MUR2020CT, MURB2020CT, MURB2020CT-1
Bulletin PD-20729 rev. D 12/05
180
170
160
DC
150
Square wave (D = 0.50)
Rated Vr applied
140
Allowable Case Temperature (°C)
see note (2)
130
03691215
Average Forward Current - IF
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
50
IF = 20 A
IF = 10 A
40
IF = 5 A
30
(AV)
(A)
15
RMS Limit
12
9
D = 0.01
6
D = 0.02
D = 0.05
D = 0.1
3
Average Power Loss ( Watts )
0
0 3 6 9 12 15
Average Forward Current - IF
D = 0.2
D = 0.5
DC
(AV)
(A)
Fig. 6 - Forward Power Loss Characteristics
250
V = 160V
R
T = 125˚C
J
T = 25˚C
200
IF = 20 A
I
F
= 10 A
I
F
= 5 A
J
150
trr ( ns )
20
V = 160V
10
R
T = 125˚C
J
T = 25˚C
J
0
100 1000
di
Fig. 7 - Typical Reverse Recovery vs. di
(2) Formula used: TC = TJ - (Pd + Pd
Pd = Forward Power Loss = I
Pd
= Inverse Power Loss = VR1 x IR (1 - D); IR @ V
REV
4
/dt (A/µs )
F
REV
x VFM @ (I
F(AV)
) x R
;
thJC
/ D) (see Fig. 6);
F(AV)
/dt
F
= rated V
R1
Qrr ( nC )
100
50
0
100 1000
di F /dt (A/µs )
Fig. 8 - Typical Stored Charge vs. di
R
/dt
F
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MUR2020CT, MURB2020CT, MURB2020CT-1
Reverse Recovery Circuit
V = 200V
R
Ω
0.01
L = 70µH
D.U.T.
Bulletin PD-20729 rev. D 12/05
di F /dt
dif/dt
ADJUST
G
Fig. 9- Reverse Recovery Parameter Test Circuit
I
F
t
0
1
di F /dt
di /dt
f
1. diF/dt - Rate of change of current through zero
crossing
2. I
- Peak reverse recovery current
RRM
3. t
- Reverse recovery time measured from zero
rr
crossing point of negative going IF to point where
a line passing through 0.75 I
extrapolated to zero current
RRM
and 0.50 I
a
RRM
3
2
D
IRFP250
S
t
rr
t
b
Q
I
RRM
0.5
di(rec)M/dt
0.75
I
RRM
4. Qrr - Area under curve defined by t
and I
RRM
Q
rr
5. di
/ dt - Peak rate of change of
(rec) M
current during t b portion of t
I
=
4
rr
RRM
t rr x I
2
5
rr
RRM
rr
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Fig. 10 - Reverse Recovery Waveform and Definitions
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MUR2020CT, MURB2020CT, MURB2020CT-1
A
Bulletin PD-20729 rev. D 12/05
Outline Table
10.54 (0.41)
MAX.
3.78 (0.15)
DIA.
3.54 (0.14)
3
2
3
2
2.92 (0.11)
2.54 (0.10)
TERM 2
3.96 (0.16)
3.55 (0.14)
2.04 (0.080) MAX.
0.94 (0.04)
0.69 (0.03)
0.61 (0.02) MAX.
5.08 (0.20) REF.
15.24 (0.60)
14.84 (0.58)
14.09 (0.55)
13.47 (0.53)
4.57 (0.18)
4.32 (0.17)
1
1.40 (0.05)
1.15 (0.04)
1
Modified JEDEC outline TO-262
Dimensions in millimeters and (inches)
6.48 (0.25)
6.23 (0.24)
1.32 (0.05)
1.22 (0.05)
2°
0.10 (0.004)
2.89 (0.11)
2.64 (0.10)
BASE
COMMON
CATHODE
2
123
COMMON
NODE
12
CATHODE
ANODE
Conforms to JEDEC Outline TO-220AB
Dimensions in millimeters and (inches)
6
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A
Outline Table
MUR2020CT, MURB2020CT, MURB2020CT-1
Bulletin PD-20729 rev. D 12/05
10.16 (0.40)
REF.
1.40 (0.055)
3X
1.14 (0.045)
93°
13
2
15.49 (0.61)
14.73 (0.58)
Conforms to JEDEC Outline D 2 PAK
Dimensions in millimeters and (inches)
Ordering Information Table
2.61 (0.10)
2.32 (0.09)
8.89 (0.35)
REF.
0.93 (0.37)
2X
0.69 (0.27)
5.08 (0.20) REF.
6.47 (0.25)
6.18 (0.24)
4.57 (0.18)
4.32 (0.17)
0.61 (0.02) MAX.
4.69 (0.18)
4.20 (0.16)
1.32 (0.05)
1.22 (0.05)
5.28 (0.21)
4.78 (0.19)
0.55 (0.02)
0.46 (0.02)
MINIMUM R EC OMMEND ED F OOTPRI NT
8.89 (0.35)
3.81 (0.15)
2.08 (0.08)
2X
11.43 (0.45)
17.78 (0.70)
2.54 (0.10)
2X
BASE
COMMON
CATHODE
2
123
COMMON
NODE
12
CATHODE
ANODE
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Device Code
MUR B 20 20 CT -1
24
1
3
1 - Ultrafast MUR Series
2 -B = D2Pak / TO-262
None = TO-220AB
3 - Current Rating (20 = 20A)
4 - Voltage Rating (20 = 200V)
5 - CT = Center Tap (Dual) TO-220 /D2PAK/ TO-262
6 - "-1" = TO-262 Option
5
6
7
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MUR2020CT, MURB2020CT, MURB2020CT-1
Bulletin PD-20729 rev. D 12/05
MUR2020
********************************************
* SPICE Model Diode *
********************************************
.SUBCKT MUR2020 ANO CAT
D1 ANO 1 CAT
*Define diode model
.MODEL DMOD D (IS=1.04703N N=1.44364 BV=280 IBV=100P RS=7.57994M
********************************************
.ENDS MUR2020
Thermal Model Subcircuit
.SUBCKT MUR2020 5 1
CTHERM1 5 4 3.93E+01
CTHERM2 4 3 2.67E+02
CTHERM3 3 2 5.20E+02
CTHERM4 2 1 1.66E+03
RTHERM1 5 4 1.12E+00
RTHERM2 4 3 1.04E+00
RTHERM1 3 2 1.57E-01
RTHERM1 2 1 1.89E-01
+ CJO=218.618P VJ=700M M=399.212M EG=1.11 RL=17.4782G)
.ENDS MUR2020
This product has been designed and qualified for Industrial Level.
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
8
Data and specifications subject to change without notice.
Qualification Standards can be found on IR's Web site.
TAC Fax: (310) 252-7309
Visit us at www.irf.com for sales contact information. 12/05
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