Document
Bulletin PD-20051 rev. A 09/01
MBR4045CT MBRB4045CT MBR4045CT-1
SCHOTTKY RECTIFIER 40 Amp
Major Ratings and Characteristics Characteristics
IF(AV) Rectangular waveform (Per Device) IFRM @ TC = 118°C (Per Leg) VRRM
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Description/Features Units
A A V A V °C 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, D2Pak 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
40 40 45 900 0.58 - 65 to 150
IFSM @ tp = 5 µs sine VF TJ @ 20 Apk, TJ = 125°C range
Case Styles
MBR4045CT
MBRB4045CT
MBR4045CT-1
Base Common Cathode
2
Base Common Cathode
2
Base Common Cathode
2
1
Anode
2 Common Cathode
3
1
Anode
Anode
2 Common Cathode
3
1
Anode
Anode
2 Common Cathode
3
Anode
TO-220AB
D PAK
2
TO-262
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1
MBR4045CT, MBRB4045CT, MBR4045CT-1
PreBulletin PD-20051 rev. A 09/01
Voltage Ratings
Parameters
VR Max. DC Reverse Voltage (V) VRWM Max. Working Peak Reverse Voltage (V)
MBR4045CT MBRB4045CT MBR4045CT-1
45
Absolute Maximum Ratings
Parameters
IF(AV) Max. Average Forward (Per Leg) Current (Per Device) IFRM Peak Repetitive Forward Current (Per Leg) IFSM EAS IAR Max.Peak One Cycle Non -Repetitive Surge Current (Per Leg) Non -Repetitive Avalanche Energy (Per Leg) Repetitive Avalanche Current (Per Leg)
Values
20 40 40 900 210 20 3
Units Conditions
A A A A A @ TC = 118° C, (Rated VR) Rated VR, square wave, 20kHz TC = 118° C
Following any rated load 5µs Sine or 3µs Rect. pulse condition and with rated 10ms Sine or 6ms Rect. pulse VRRM applied
TJ = 25°C, IAS = 3Amps, L = 4.40mH Current decaying linearty to zero in 1 µsec Frequency limited by T J max. VA = 1.5 x VR typical
Electrical Specifications
Parameters
VFM Max. Forward Voltage Drop (1) IRM Max. Instantaneus Reverse Current (1) CT LS Max. Junction Capacitance Typical Series Inductance (Rated VR)
Values
0.60 0.78 0.58 0.75 1 50 95 900 8.0 10,000
Units Conditions
V V V V mA mA mA pF nH V/ µs
(1) Pulse Width < 300µs, Duty Cycle <2%
@ 20A @ 40A @ 20A @ 40A TJ = 25 °C TJ = 100 °C TJ = 125 °C
TJ = 25 °C TJ = 125 °C Rated DC voltage
VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C Measured from top of terminal to mounting plane
dv/dt Max. Voltage Rate of Change
Thermal-Mechanical Specifications
Parameters
TJ Tstg Max. Junction Temperature Range Max. Storage Temperature Range
Values
-65 to 150 -65 to 175 1.5 0.50 50 2 (0.07) Min. Max. 6 (5) 12 (10)
Units Conditions
°C °C °C/W °C/W °C/W g (oz.) Kg-cm Non-lubricated threads (Ibf-in) DC operation Mounting surface, smooth and greased Only for TO-220 DC operation For D2Pak and TO-262
RthJC Max. Thermal Resistance Junction to Case (Per Leg) RthCS Typical Thermal Resistance Case to Heatsink RthJA Max. Thermal Resistance Junction to Ambient wt T Approximate Weight Mounting Torque
2
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MBR4045CT, MBRB4045CT, MBR4045CT-1
Bulletin PD-20051 rev. A 09/01
1000
1000
Reverse Current - I R (mA)
100 10 1 0.1
T = 150˚C
J
125˚C 100˚C 75˚C 50˚C 25˚C
Instantaneous Forward Current - I F (A)
100
0.01 0.001 0 5 10 15 20 25 30 35 40 45
Reverse Voltage - VR (V) Fig. 2 - Typical Values Of Reverse Current Vs. Reverse Voltage (Per Leg)
T = 150˚C
J J J
T = 125˚C
900
Junction Capacitance - C T (p F)
T = 25˚C
10
800 700 600 500 400 300 200 0 10 20 30
T J = 25˚C
1 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
Forward Voltage Drop - VFM (V) Fig. 1 - Max. Forward Voltage Drop Characteristics (Per Leg)
40
50
Reverse Voltage - VR (V) Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage (Per Leg)
10
(°C/W)
D = 0.75 D = 0.50 D = 0.33 D = 0.25 D = 0.20
1
Thermal Impedance Z
thJC
PDM
0.1
Single Pulse (Thermal Resistance)
t1 t2 Notes: 1. Duty factor D = t1/ t2 2. Peak Tj = Pdm x ZthJC + Tc
0.01
0.001 0.00001
0.0001
0.001
0.01
0.1
1
10
t1 , Rectangular Pulse Duration (Seconds) Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
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3
MBR4045CT, MBRB4045CT, MBR4045CT-1
PreBulletin PD-20051 rev. A 09/01
160
Allowable Case Temperature (°C) Average Power Loss (Watts)
20 18 16 14 12
140
DC
D = 0.75 D = 0.50 D = 0.33 D = 0.25 D = 0.20
120
Square Wave (D = 0.50) Rated Vr Applied
10 RMS Limit 8 6 4 2 0
DC
100
see note (2)
80 0 5 10 15 20 25 30
Average Forward Current - IF(AV) (A) Fig. 5 - Max. Allowable Case Temperature Vs. Average Forward Current
0
5
10
15
20
25
30
35
Average Forward Current - IF(AV) (A) Fig. 6 - Forward Power Loss Characteristics
Non-Repetitive Surge Current - I FSM (A)
1000
At Any Rated Load Condition And With Rated V.