1
Case Styles
MUR820
TO-220AC
MURB820
D2PAK
MURB820-1
TO-262
VRRM Peak Repetitive Peak Reverse Voltage 200 V
IF(AV) Average Rectified Forward Current 8 A
Total Device, (Rated VR ), TC = 150°C
IFSM Non Repetitive Peak Surge Current 100
IFM Peak Repetitive Forward Current 16
(Rated VR , Square wave, 20 KHz), TC = 150°C
TJ, TSTG Operating Junction and Storage Temperatures -65 to 175 °C
Parameters Max Units
MUR820
MURB820
MURB820-1
Bulletin PD-20731 rev. B 01/01
trr = 25ns
IF(AV) = 8Amp
VR = 200V
• Ultrafast Recovery Time
• Low Forward Voltage Drop
• Low Leakage Current
• 175°C Operating Junction Temperature
Features
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.
Absolute Maximum Ratings
Ultrafast Rectifier
www.irf.com
MUR820, MURB820, MURB820-1
Bulletin PD-20731 rev. B 01/01
2www.irf.com
VBR, VrBreakdown Voltage, 200 - - V IR = 100µA
Blocking Voltage
VFForward Voltage - - 0.975 V IF = 8A
- - 0.895 V IF = 8A, TJ = 150°C
IRReverse Leakage Current - - 5 µA VR = VR Rated
- - 250 µA TJ = 150°C, VR = VR Rated
CTJunction Capacitance - 25 - pF VR = 200V
LSSeries Inductance - 8.0 - nH .
Electrical Characteristics @ TJ = 25°C (unless otherwise specified)
Parameters Min Typ Max Units Test Conditions
Measured lead to lead 5mm from package body
trr Reverse Recovery Time --35 ns IF = 1.0A, diF/dt = 50A/µs, VR = 30V
--25 I
F = 0.5A, IR = 1.0A, IREC = 0.25A
-20- T
J = 25°C
34 TJ = 125°C
IRRM Peak Recovery Current - 1.7 - A TJ = 25°C
- 4.2 - TJ = 125°C
Qrr Reverse Recovery Charge - 23 - nC TJ = 25°C
-75- T
J = 125°C
Dynamic Recovery Characteristics @ TJ = 25°C (unless otherwise specified)
IF = 8A
VR = 160V
diF /dt = 200A/µs
Parameters Min Typ Max Units Test Conditions
Parameters Min Typ Max Units
TJMax. Junction Temperature Range - - - 65 to 175 °C
TStg Max. Storage Temperature Range - - - 65 to 175
RthJC Thermal Resistance, Junction to Case - - 3.0 °C/ W
RthJA Thermal Resistance, Junction to Ambient - - 50
RthCS Thermal Resistance, Case to Heatsink - 0.5 -
Wt Weight - 2.0 - g
- 0.07 - (oz)
Mounting Torque 6.0 - 12 Kg-cm
5.0 - 10 lbf.in
Thermal - Mechanical Characteristics
! Typical Socket Mount
"# Mounting Surface, Flat, Smooth and Greased
"
!
Bulletin PD-20731 rev. B 01/01
3
MUR820, MURB820, MURB820-1
www.irf.com
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage
Fig. 1 - Typical Forward Voltage Drop Characteristics
Reverse Voltage - VR (V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
0.1
1
10
100
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8
T = 175˚C
T = 150˚C
T = 25˚C
J
J
J
0
.001
0.01
0.1
1
10
100
0 50 100 150 200 250
150˚C
125˚C
100˚C
25˚C
T = 175˚C
J
10
100
1000
1 10 100 1000
T = 25˚C
J
Forward Voltage Drop - VFM (V)
Instantaneous Forward Current - I F
(A)
Reverse Voltage - VR (V)
Junction Capacitance - C T (pF)
Fig. 4 - Max. Thermal Impedance Z thJC Characteristics
t1, Rectangular Pulse Duration (Seconds)
Thermal Impedance Z thJC (°C/W)
Reverse Current - I R
(µA)
0.01
0.1
1
10
0.00001 0.0001 0.001 0.01 0.1 1
Single Pulse
(Thermal Resistance)
D = 0.50
D = 0.20
D = 0.10
D = 0.05
D = 0.02
D = 0.01
2
t
1
t
P
DM
Notes:
1. Duty factor D = t1/ t2
2. Peak Tj = Pdm x ZthJC + Tc
MUR820, MURB820, MURB820-1
Bulletin PD-20731 rev. B 01/01
4www.irf.com
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
Fig. 6 - Forward Power Loss Characteristics
(3) Formula used: TC = TJ - (Pd + PdREV) x RthJC ;
Pd = Forward Power Loss = IF(AV) x VFM @ (IF(AV) / D) (see Fig. 6);
PdREV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1 = rated VR
Average Power Loss ( Watts )
trr ( nC )
0
2
4
6
8
1
0
036912
DC
RMS Limit
D = 0.01
D = 0.02
D = 0.05
D = 0.10
D = 0.20
D = 0.50
Qrr ( nC )
1
0
2
0
3
0
4
0
5
0
100 1000
IF = 16A
IF = 8 A
IF = 4 A
V = 160V
T = 125˚C
T = 25˚C
R
J
J
0
40
80
20
60
00
100 1000
IF = 16A
IF = 8 A
IF = 4 A
V = 160V
T = 125˚C
T = 25˚C
R
J
J
130
140
150
160
170
180
036912
DC
see note (3)
Square wave (D = 0.50)
Rated Vr applied
Average Forward Current - IF(AV)
(A)
Allowable Case Temperature (°C)
Average Forward Current - IF(AV)
(A)
Fig. 8 - Typical Stored Charge vs. di F /dt
Fig. 7 - Typical Reverse Recovery vs. di F /dt
di
F
/dt (A/µs )
di F
/dt (A/µs )
Bulletin PD-20731 rev. B 01/01
5
MUR820, MURB820, MURB820-1
www.irf.com
Fig. 10 - Reverse Recovery Waveform and Definitions
IRFP250
D.U.T.
L = 70µH
V = 200V
R
0.01
Ω
G
D
S
dif/dt
ADJUST
t
a
t
b
t
rr
Q
rr
I
F
I
RRM
I
RRM
0.5
di(rec)M/dt
0.75 I
RRM
5
4
3
2
0
1di /dt
f
Fig. 9- Reverse Recovery Parameter Test Circuit
Reverse Recovery Circuit
di F /dt
di F /dt
4. Qrr - Area under curve defined by t rr
and IRRM
5. di (rec) M / dt - Peak rate of change of
current during t b portion of t rr
1. diF/dt - Rate of change of current through zero
crossing
2. IRRM - Peak reverse recovery current
3. trr - Reverse recovery time measured from zero
crossing point of negative going IF to point where
a line passing through 0.75 IRRM and 0.50 IRRM
extrapolated to zero current
Q rr = t rr x I RRM
2
MUR820, MURB820, MURB820-1
Bulletin PD-20731 rev. B 01/01
6www.irf.com
3.78 (0.15)
3.54 (0.14)
10.54 (0.41)
MAX.
DIA.
15.24 (0.60)
14.84 (0.58)
2.92 (0.11)
2.54 (0.10)
1
TERM 2
14.09 (0.55)
13.47 (0.53)
3.96 (0.16)
3.55 (0.14)
0.94 (0.04)
0.69 (0.03)
4.57 (0.18)
4.32 (0.17)
30.61 (0.02) MAX.
5.08 (0.20) REF.
1.32 (0.05)
1.22 (0.05)
6.48 (0.25)
6.23 (0.24)
2°
0.10 (0.004)
1.40 (0.05)
1.15 (0.04)
2.89 (0.11)
2.64 (0.10)
1
3
2.04 (0.080) MAX.
Conforms to JEDEC Outline TO-220AC
Dimensions in millimeters and (inches)
Dimensions in millimeters and (inches)
Modified JEDEC outline TO-262
Outline Table
Anode
13
2
N
/C
Anode
13
Base
Cathode
Cathode
Bulletin PD-20731 rev. B 01/01
7
MUR820, MURB820, MURB820-1
www.irf.com
10.16 (0.40)
REF.
8.89 (0.35)
4.57 (0.18)
4.32 (0.17)
0.61 (0.02) MAX.
5.08 (0.20) REF.
1.32 (0.05)
1.22 (0.05)
13
6.47 (0.25)
6.18 (0.24)
93°
REF.
2.61 (0.10)
2.32 (0.09)
5.28 (0.21)
4.78 (0.19)
4.69 (0.18)
4.20 (0.16)
0.55 (0.02)
0.46 (0.02)
14.73 (0.58)
15.49 (0.61)
1.40 (0.055)
1.14 (0.045)
3X
0.93 (0.37)
0.69 (0.27)
2X
11.43 (0.45)
17.78 (0.70)
8.89 (0.35)
3.81 (0.15)
2.08 (0.08)
2X
2.54 (0.10)
2X
MINIMUM RECOMMENDED FOOTPRINT
2
Conforms to JEDEC Outline D2PAK
Dimensions in millimeters and (inches)
Outline Table
Anode
13
Base
Cathode
2
N
/C
2
Ordering Information Table
Device Code
152 4
3
1- Ultrafast MUR Series
2-B = D
2Pak/ TO-262
None = TO-220AC
3- Current Rating (8 = 8A)
4- Voltage Rating (20 = 200V)
5- CT = Center Tap (Dual) TO-220 /D2PAK/ TO-262
6- "-1" = TO-262 Option
MUR B 8 20 CT -1
6
MUR820, MURB820, MURB820-1
Bulletin PD-20731 rev. B 01/01
8www.irf.com
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7309
Visit us at www.irf.com for sales contact information. 01/01
