Bulletin PD-21019 rev. C 01/07
MBRB20...CTPbF
MBR20...CT-1PbF
SCHOTTKY RECTIFIER
20 Amp
I
F(AV)
= 20Amp
V
R
= 80/ 100V
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular waveform
(Per Device)
I
FRM
V
RRM
I
FSM
@ tp = 5
μs
sine
V
F
T
J
@ 10 Apk, T
J
= 125°C
range
@ T
C
= 133°C
(Per Leg)
20
80/90/100
850
0.70
- 65 to 150
A
V
A
V
°C
Description/ Features
Units
A
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 bat-
tery protection.
150° C T
J
operation
Center tap TO-220, D
2
Pak and TO-262 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
Values
20
Case Styles
MBRB20...CTPbF
MBR20...CT-1PbF
Base
Common
Cathode
2
Base
Common
Cathode
2
1
Anode
2
Common
Cathode
3
1
Anode
Anode
2
Common
Cathode
3
Anode
D
2
PAK
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TO-262
1
MBRB20...CTPbF, MBR20...CT-1PbF Series
Bulletin PD-21019 rev. C 01/07
Voltage Ratings
Parameters
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
MBRB2080CTPbF
MBR2080CT-1PbF
MBRB2090CTPbF
MBR2090CT-1PbF
MBRB20100CTPbF
MBR20100CT-1PbF
80
90
100
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward (Per Leg)
Current
(Per Device)
I
FRM
Peak Repetitive Forward
Current
(Per Leg)
I
FSM
Non Repetitive Peak
Surge Current
Values
10
20
20
850
150
Units
A
A
Conditions
@ T
C
= 133° C, (Rated V
R
)
Rated V
R
, square wave, 20kHz
T
C
= 133° C
5μs Sine or 3μs Following any rated load condition
and with rated V
RRM
applied
Rect. pulse
Surge applied at rated load conditions halfwave,
single phase, 60Hz
2.0
μsec
1.0 KHz
T
J
= 25 °C, I
AS
= 2 Amps, L = 12 mH
A
A
mJ
I
RRM
Peak Repetitive Reverse
Surge Current
E
AS
Non-Repetitive Avalanche Energy
(Per Leg)
0.5
24
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(1)
Values
0.80
0.95
0.70
0.85
Units
V
V
V
V
mA
mA
V
mΩ
Conditions
@ 10A
@ 20A
@ 10A
@ 20A
T
J
= 25 °C
T
J
= 125 °C
T
J
= T
J
max.
T
J
= 25 °C
T
J
= 125 °C
Rated DC voltage
I
RM
Max. Instantaneus Reverse Current
(1)
0.10
6
0.433
15.8
400
8.0
10000
V
F(TO)
Threshold Voltage
r
t
C
T
L
S
Forward Slope Resistance
Max. Junction Capacitance
Typical Series Inductance
pF
nH
V
R
= 5V
DC
(test signal range 100Khz to 1Mhz) 25°C
Measured from top of terminal to mounting plane
(1) Pulse Width < 300μs, Duty Cycle <2%
dv/dt Max. Voltage Rate of Change
V/
μs
(Rated V
R
)
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
Values
-65 to 150
-65 to 175
2.0
0.50
50
2 (0.07)
Min.
Max.
6 (5)
12 (10)
Units
°C
°C
Conditions
R
thJC
Max. Thermal Resistance
Junction to Case
(Per Leg)
R
thCS
Typical Thermal Resistance
Case to Heatsink
R
thJA
Max. Thermal Resistance
Junction to Ambient
wt
T
Approximate Weight
Mounting Torque
Marking Device
°C/W DC operation
°C/W Mounting surface, smooth and greased
Only for TO-220
°C/W DC operation
For D
2
Pak and TO-262
g (oz.)
Kg-cm
Non-lubricated threads
(Ibf-in)
Case style D
2
Pak
Case style TO-262
MBRB20...CT
MBR20...CT-1
2
www.irf.com
MBRB20...CTPbF, MBR20...CT-1PbF Series
Bulletin PD-21019 rev. C 01/07
100
100
10
1
0.1
0.01
0.001
0.0001
Reverse Current - I
R
(mA)
T
J
= 150°C
125°C
100°C
75°C
50°C
25°C
Instantaneous Forward Current - I
F
(A)
T
J
= 150°C
T
J
= 125°C
T
J
= 25°C
10
0
20
40
60
80
100
Reverse Voltage - V
R
(V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
1000
Junction Capacitance - C
T
(pF)
T
J
= 25°C
100
1
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
10
0
20
40
60
80
100
Forward Voltage Drop - V
FM
(V)
Reverse Voltage - V
R
(V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
10
T
hermal Impedance Z
thJC
(°C/ W)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
1
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
P
DM
0.1
S
ingle Pulse
(T
hermal Resistanc e)
0.01
0.00001
Notes:
t1
t2
1. Duty factor D = t 1/ t 2
2. Peak T = P x Z
thJC
+ T
C
J
DM
0.01
0.1
1
10
0.0001
0.001
t 1 , Rectangular Pulse Duration (S onds)
ec
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
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3
MBRB20...CTPbF, MBR20...CT-1PbF Series
Bulletin PD-21019 rev. C 01/07
150
Allowable Case T
emperature - (°C)
10
Average Power Loss - (Watts)
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
DC
RMSLimit
4
140
DC
8
130
S
quare wave (D = 0.50)
Rated V
R
applied
6
120
110
see note (2)
2
100
0
2
4
6
8
10
12
14
16
0
0
2
4
6
8
10
12
14
16
Average Forward Current - I
F(AV)
(A)
Average Forward Current - I
F(AV)
(A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
Non-Repetitive S
urge Current - I
FS
(A)
M
1000
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following S
urge
100
10
100
1000
10000
S
quare Wave Pulse Duration - t p (microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
(2)
Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= rated V
R
4
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MBRB20...CTPbF, MBR20...CT-1PbF Series
Bulletin PD-21019 rev. C 01/07
Outlines Table
Conform to JEDEC outline D
2
Pak (SMD-220)
Dimensions in millimeters and (inches)
Modified JEDEC outline TO-262
Dimensions in millimeters and (inches)
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5
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