Motorola MURHB840CT Datasheet
SEMICONDUCTOR TECHNICAL DATA
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by MURHB840CT/D
D2PAK Power Surface Mount Package
Designed for use in switching power supplies, inverters and as free wheeling
diodes, these state–of–the–art devices have the following features:
• Package Designed for Power Surface Mount Applications
• Ultrafast 28 Nanosecond Recovery Times
• 175°C Operating Junction Temperature
• Epoxy Meets UL94, VO @ 1/8″
• High Temperature Glass Passivated Junction
• High Voltage Capability
• Low Leakage Specified @ 150°C Case Temperature
• Short Heat Sink Tab Manufactured — Not Sheared!
• Similar in Size to Industry Standard TO–220 Package
Mechanical Characteristics
• Case: Epoxy, Molded
• Weight: 1.7 grams (approximately)
• Finish: All External Surfaces Corrosion Resistant and Terminal
Leads are Readily Solderable
• Lead and Mounting Surface Temperature for Soldering
Purposes: 260°C Max. for 10 Seconds
• Shipped 50 units per plastic tube
• Available in 24 mm Tape and Reel, 800 units per reel by
adding a “T4” suffix to the part number
• Marking: UH840
1
3
Motorola Preferred Device
ULTRAFAST RECTIFIER
8.0 AMPERES
400 VOL TS
4
1
3
CASE 418B–02
D2PAK
4
MAXIMUM RATINGS, PER LEG
Rating Symbol Value Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
Average Rectified Forward Current (Rated VR), TC = 120°C
Total Device
Peak Repetitive Forward Current
(Rated VR, Square Wave, 20 kHz), TC = 120°C
Non–repetitive Peak Surge Current
(Surge applied at rated load conditions halfwave, single phase, 60 Hz)
Controlled Avalanche Energy W
Operating Junction Temperature and Storage Temperature TJ, T
V
RRM
V
RWM
V
I
F(AV)
I
FM
I
FSM
AVAL
400 Volts
R
4.0
8.0
100 Amps
–65 to +175 °C
stg
8 Amps
20 mJ
Amps
THERMAL CHARACTERISTICS, PER LEG
Maximum Thermal Resistance — Junction to Case
— Junction to Ambient (1)
(1) See Chapter 7 for mounting conditions
Designer’s Data for “Worst Case” Conditions — The Designer’s Data Sheet permits the design of most circuits entirely from the information presented. SOA Limit
curves —representing boundaries on device characteristics — are given to facilitate “worst case” design.
Designer’s and SWITCHMODE are trademarks of Motorola, Inc.
Thermal Clad is a trademark of the Bergquist Company
Preferred devices are Motorola recommended choices for future use and best overall value.
R
R
θJC
θJA
3.0
50
°C/W
Rev 1
Rectifier Device Data
Motorola, Inc. 1996
1
MURHB840CT
ELECTRICAL CHARACTERISTICS, PER LEG
Characteristic Symbol Max Unit
Maximum Instantaneous Forward Voltage (2) (iF = 4.0 Amps, TC = 150°C)
(iF = 4.0 Amps, TC = 25°C)
Maximum Instantaneous Reverse Current (2) (Rated dc Voltage, TC = 150°C)
(Rated dc Voltage, TC = 25°C)
Maximum Reverse Recovery Time
(IF = 1.0 Amp, di/dt = 50 Amps/µs)
(2) Pulse Test: Pulse Width = 300 µs, Duty Cycle ≤2.0%
v
F
i
R
t
rr
1.9
2.2
500
10
28 ns
Volts
µA
100
50
20
10
5
2
1
0.5
0.2
, INSTANTANEOUS FORWARD CURRENT (AMP)
0.1
F
i
10
8
6
1000
TJ = 150°C
25°C
vF, INSTANTANEOUS VOLTAGE (VOLTS)
100°C
500
200
µ
100
50
20
10
5
2
, REVERSE CURRENT ( A)
1
R
I
0.5
0.2
0.1
0
2.42.221.81.61.41.210.80.60.4
50 100 150 200 250 300 350 400
VR, REVERSE VOLTAGE (VOLTS)
TJ = 150°C
100°C
25°C
Figure 1. T ypical Forward Voltage Figure 2. T ypical Reverse Current, Per Leg
1000
RATED VR APPLIED
R
= 3°C/W
θ
JC
100
DC
, AVERAGE POWER DISSIPA TION (WATTS)
F
I
2
4
2
0
120 130 140 150 160 170 180
110
SQUARE
WAVE
TC, CASE TEMPERATURE (°C)
C, CAPACITANCE (pF)
10
1
0.01
0.1 1 10 100
VR, REVERSE VOLTAGE (VOLTS)
Figure 3. Current Derating, Case Figure 4. T ypical Capacitance, Per Leg
Rectifier Device Data
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