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Motorola Electronic Components Datasheet

MBRF745 Datasheet

SWITCHMODE Schottky Power Rectifirer

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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document
by MBRF745/D
SWITCHMODE
Schottky Power Rectifier
The SWITCHMODE Power Rectifier employs the Schottky Barrier principle in
a large area metal–to–silicon power diode. State–of–the–art geometry features
epitaxial construction with oxide passivation and metal overlay contact. Ideally
suited for use as rectifiers in very low–voltage, high–frequency switching power
supplies, free wheeling diodes and polarity protection diodes.
Highly Stable Oxide Passivated Junction
Very Low Forward Voltage Drop
High Junction Temperature Capability
High dv/dt Capability
Excellent Ability to Withstand Reverse Avalanche Energy
Transients
Guardring for Stress Protection
Epoxy Meets UL94, VO at 1/8
Electrically Isolated. No Isolation Hardware Required.
UL Recognized File #E69369(1)
1
Mechanical Characteristics
Case: Epoxy, Molded
Weight: 1.9 grams (approximately)
Finish: All External Surfaces Corrosion Resistant and Terminal
Leads are Readily Solderable
Lead Temperature for Soldering Purposes: 260°C Max. for 10
Seconds
Shipped 50 units per plastic tube
Marking: B745
MAXIMUM RATINGS
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
Rating
Average Rectified Forward Current (Rated VR), TC = 105°C
Peak Repetitive Forward Current (Rated VR, Square Wave, 20 kHz), TC = 105°C
Non–repetitive Peak Surge Current
(Surge applied at rated load conditions halfwave, single phase, 60 Hz)
Peak Repetitive Reverse Surge Current (2.0 µs, 1.0 kHz)
Operating Junction and Storage Temperature
Voltage Rate of Change (Rated VR)
RMS Isolation Voltage (t = 1 second, R.H. 30%, TA = 25°C)(2)
Per Figure 3
Per Figure 4(1)
Per Figure 5
THERMAL CHARACTERISTICS
Maximum Thermal Resistance, Junction to Case
Lead Temperature for Soldering
Purposes: 1/8from Case for 5 Seconds
(1) UL Recognized mounting method is per Figure 4.
(2) Proper strike and creepage distance must be provided.
SWITCHMODE is a trademark of Motorola, Inc.
Preferred devices are Motorola recommended choices for future use and best overall value.
MBRF745
Motorola Preferred Device
SCHOTTKY BARRIER
RECTIFIER
7.5 AMPERES
45 VOLTS
2
1
2
CASE 221E–01
ISOLATED TO–220
Symbol
VRRM
VRWM
VR
IF(AV)
IFRM
IFSM
IRRM
TJ, Tstg
dv/dt
Viso1
Viso2
Viso3
Value
45
7.5
15
150
1.0
– 65 to +150
10000
4500
3500
1500
Unit
Volts
Amps
Amps
Amps
Amp
°C
V/µs
Volts
RθJC 4.2 °C/W
TL 260 °C
Rev 1
©RMeoctotriofilea,rInDce. 1v9ic96e Data
1


Motorola Electronic Components Datasheet

MBRF745 Datasheet

SWITCHMODE Schottky Power Rectifirer

No Preview Available !

MBRF745
ELECTRICAL CHARACTERISTICS
Characteristic
Maximum Instantaneous Forward Voltage (3)
(iF = 15 Amp, TC = 25°C)
(iF = 15 Amp, TC = 125°C)
(iF = 7.5 Amp, TC = 125°C)
Maximum Instantaneous Reverse Current (3)
(Rated DC Voltage, TC = 25°C)
(Rated DC Voltage, TC = 125°C)
(3) Pulse Test: Pulse Width = 300 µs, Duty Cycle 2.0%
Symbol
vF
iR
Max
0.84
0.72
0.57
0.1
15
Unit
Volts
mA
50
30
20
10
7
5
3
2
1
0.7
0.50.2
100
TJ = 125°C
75°C
10
1
25°C 0.1
0.01
0.4 0.6 0.8
1
iF, INSTANTANEOUS FORWARD VOLTAGE (VOLTS)
Figure 1. Typical Forward Voltage
1.2
0.001 0
TJ = 150°C
125°C
100°C
75°C
25°C
10 20 30 40
VR, REVERSE VOLTAGE (VOLTS)
Figure 2. Typical Reverse Current
50
2 Rectifier Device Data


Part Number MBRF745
Description SWITCHMODE Schottky Power Rectifirer
Maker Motorola
Total Page 4 Pages
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