SCHOTTKY RECTIFIER 20 Amp
MBR20..CTPbF Series
Bulletin PD-20866 rev. B 05/06
1
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Major Ratings and Characteristics
IF(AV) Rectangular waveform 20 A
(Per Device)
IFRM @
T C
= 135°C 20 A
(Per Leg)
VRRM 35-45 V
IFSM @ tp = 5 μs sine 1060 A
VF@
10 Apk, TJ
= 125°C 0.57 V
TJrange - 65 to 150 °C
Characteristics Values Units
Description/ Features
This center tap Schottky rectifier has been optimized for low
reverse leakage at high temperature. The proprietary barrier
technology allows for reliable operation up to 150° C junction
temperature. Typical applications are in switching power
supplies, converters, free-wheeling diodes, and reverse
battery protection.
150° C TJ operation
Center tap TO-220 and D2Pak packages
Low forward voltage drop
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Lead-Free ("PbF" suffix)
IF(AV) = 20Amp
VR = 35-45V
Case Styles
TO-220
MBR20..CTQPbF
Anode
13
2
Base
Common
Cathode
2
A
node
Common
Cathode
MBR20..CTPbF Series
Bulletin PD-20866 rev. B 05/06
2www.irf.com
TJMax. Junction Temperature Range -65 to 150 °C
Tstg Max. Storage Temperature Range -65 to 175 °C
RthJC Max. Thermal Resistance 2.0 °C/W DC operation
Junction to Case (Per Leg)
RthCS Typical Thermal Resistance 0.50 °C/W Mounting surface, smooth and greased
Case to Heatsink Only for TO-220
wt Approximate Weight 2 (0.07) g (oz.)
T Mounting Torque Min. 6 (5) Non-lubricated threads
Max. 12 (10)
Marking Device MBR2045CT
Thermal-Mechanical Specifications
Parameters Values Units Conditions
Kg-cm
(Ibf-in)
Electrical Specifications
(1) Pulse Width < 300μs, Duty Cycle <2%
IF(AV) Max. Average Forward (Per Leg) 10 A @ TC = 135° C, (Rated VR)
Current (Per Device) 20
IFRM Peak Repetitive Forward 20 A Rated VR, square wave, 20kHz
Current (Per Leg) TC = 135° C
IFSM Non Repetitive Peak 1060 5μs Sine or 3μs
Surge Current Rect. pulse
Surge applied at rated load conditions halfwave,
single phase, 60Hz
EAS Non-Repetitive Avalanche Energy 8 mJ (Per Leg) TJ = 25 °C, IAS
= 2 Amps, L = 4 mH
IAR Repetitive Avalanche Current 2 A Current decaying linearly to zero in 1 μsec
(Per Leg) Frequency limited by TJ max. VA = 1.5 x VR typical
Absolute Maximum Ratings
Parameters Values Units Conditions
Following any rated load condition
and with rated VRRM applied
A
150
VFM Max. Forward Voltage Drop 0.84 V @ 20A TJ = 25 °C
(1) 0.57 V @ 10A
0.72 V @ 20A
IRM Max. Instantaneus Reverse Current 0.1 mA TJ = 25 °C
(1) 15 mA TJ = 125 °C
VF(TO) Threshold Voltage 0.354 V TJ = TJ max.
rtForward Slope Resistance 17.6 mΩ
CTMax. Junction Capacitance 600 pF VR = 5VDC (test signal range 100Khz to 1Mhz) 25°C
LSTypical Series Inductance 8.0 nH Measured from top of terminal to mounting plane
dv/dt Max. Voltage Rate of Change 10000 V/ μs
(Rated VR)
Parameters Values Units Conditions
Rated DC voltage
TJ = 125 °C
MBR2035CTPbF MBR2045CTPbF
VRMax. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V) 35 45
Voltage Ratings
Parameters
MBR20..CTPbF Series
Bulletin PD-20866 rev. B 05/06
3
www.irf.com
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
1
10
100
0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8
F
FM
T = 150°C
T = 125°C
T = 25°C
J
J
J
Forward Voltage Drop - V (V)
Instantaneous Forward Current - I (A)
0.0001
0.001
0.01
0.1
1
10
100
0 5 10 15 20 25 30 35 40 45
R
R
100°C
75°C
50°C
25°C
Re ve rse Curren t - I (m A)
Reverse Voltage - V (V)
T = 150°C
J
125°C
100
1000
0 1020304050
R
T
Junction Capacitance - C (pF)
Reverse Voltage - V (V)
T = 25°C
J
0.01
0.1
1
10
0.00001 0.0001 0.001 0.01 0.1 1 10 100
thJC
t , Rectangular Pulse Duration (Seconds)
Single Pulse
( Th e rm a l Re sist a n c e )
1
Therma l Imped anc e Z (°C/ W)
Not es:
1. Duty factor D = t / t
2. Peak T = P x Z + T
12
JthJC C
DM
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
2
t
1
t
P
DM
MBR20..CTPbF Series
Bulletin PD-20866 rev. B 05/06
4www.irf.com
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
(2) 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
120
125
130
135
140
145
150
03691215
DC
Allowable Case Temperature - (°C)
F( A V )
see note (2)
Average Forward Current - I (A)
Sq uare wa ve (D = 0.50)
Rated V applied
R
0
2
4
6
8
10
0 2 4 6 8 10 12 14 16
DC
Average Power Loss - (Watts)
F( A V)
RM S Lim i t
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
Average Forward Current - I (A)
100
1000
10 100 1000 10000
FSM
Non-Repetitive Surge Current - I (A)
p
At Any Rated Load Condition
And With Rated V Applied
Fo llowing Surge
RRM
Sq ua re Wa ve Pulse Dura tio n - t (mic rose c )
MBR20..CTPbF Series
Bulletin PD-20866 rev. B 05/06
5
www.irf.com
INTERNATIONAL
RECTIFIER
ASSEMBLY
LOT CODE
EXAMPLE:
IRMX Assembly Line
ASSEMBLED ON WW 19, 2001
LOT CODE 1789
LOGO
P = LEAD-FREE
DATE CODE
YEAR 1 = 2001
WEEK 19
THIS IS A MBR2045CT
PART NUMBER
Part Marking Information
INTERNATIONAL
RECTIFIER
ASSEMBLY
LOT CODE
EXAMPLE:
ASSEMBLED ON WW 19, 2001
IN THE ASSEMBLY LINE "C"
THIS IS A MBR2045CT
LOT CODE 1789
LOGO
WEEK 19
LINE C
PART NUMBER
DATE CODE
P = LEAD-FREE
YEAR 1 = 2001
IRXC Assembly Line - SubCon Assembly Line
Outline Table
Conform to JEDEC outline TO-220AB
MBR20..CTPbF Series
Bulletin PD-20866 rev. B 05/06
6www.irf.com
MBR2045CT
********************************************
* This model has been developed by *
* Wizard SPICE MODEL GENERATOR (1999) *
* (International Rectifier Corporation) *
* Contain Proprietary Information *
********************************************
* SPICE Model Diode is composed by a *
* simple diode plus paralled VCG2T *
********************************************
.SUBCKT MBR2045CT ANO CAT
D1 ANO 1 DMOD (0.03215)
*Define diode model
.MODEL DMOD D(IS=3.22473520069593E-04A,N=1.51153417806053,BV=52V,
+ IBV=0.64831328218128A,RS= 0.00042438,CJO=2.77992867902976E-08,
+ VJ=2.31227489200041,XTI=2, EG=0.682207095559952)
********************************************
*Implementation of VCG2T
VX 1 2 DC 0V
R1 2 CAT TRES 1E-6
.MODEL TRES RES(R=1,TC1=-29.9397914371146)
GP1 ANO CAT VALUE={-ABS(I(VX))*(EXP((((1.396526E-04/-29.93979)*((V(2,CAT)*1E6)/(I(VX)+1E-6)-
1))+1)*4.399843E-02*ABS(V(ANO,CAT)))-1)}
********************************************
.ENDS MBR2045CT
Thermal Model Subcircuit
.SUBCKT MBR2045CT 5 1
CTHERM1 5 4 1.43E+00
CTHERM2 4 3 1.46E+01
CTHERM3 3 2 9.30E+01
CTHERM4 2 1 1.69E+03
RTHERM1 5 4 5.79E-01
RTHERM2 4 3 7.72E-01
RTHERM1 3 2 4.45E-01
RTHERM1 2 1 1.93E-01
.ENDS MBR2045CT
MBR20..CTPbF Series
Bulletin PD-20866 rev. B 05/06
7
www.irf.com
35 = 35V
45 = 45V
Ordering Information Table
Device Code
1 524
3
1- Schottky MBR Series
2- Current Rating (20 = 20A)
3- Voltage Ratings
4- CT = Essential Part Number
5-y none = Standard Production
y PbF = Lead-Free
MBR 20 45 CT PbF
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. 05/06
Data and specifications subject to change without notice.
This product has been designed and qualified for Industrial Level and Lead-Free.
Qualification Standards can be found on IR's Web site.
