MBRF745 Datasheet, PDF (1/4 Pages) Motorola, Inc – SWITCHMODE™ Schottky Power Rectifirer

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
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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)
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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: 1/8″ from 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
R_θJC
4.2
°C/W
TL
260
°C
Rev 1
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