MBR140SFT1
Surface Mount
Schottky Power Rectifier
Plastic SOD−123 Package
...using the Schottky Barrier principle with a large area
metal−to−silicon power diode. Ideally suited for low voltage, high
frequency rectification or as free wheeling and polarity protection
diodes in surface mount applications where compact size and weight
are critical to the system. This package also provides an easy to work
with alternative to leadless 34 package style. Because of its small size,
it is ideal for use in portable and battery powered products such as
cellular and cordless phones, chargers, notebook computers, printers,
PDAs and PCMCIA cards. Typical applications are ac/dc and dc−dc
converters, reverse battery protection, and “Oring” of multiple supply
voltages and any other application where performance and size are
critical. These state−of−the−art devices have the following features:
• Guardring for Stress Protection
• Low Forward Voltage
• 125°C Operating Junction Temperature
• Epoxy Meets UL94, V0 at 1/8″
• Package Designed for Optimal Automated Board Assembly
• ESD Ratings: Machine Model, C
ESD Ratings: Human Body Model, 3B
Mechanical Characteristics
• Reel Options: MBR140SFT1 = 3,000 per 7″ reel/8 mm tape
Reel Options: MBR140SFT3 = 10,000 per 13″ reel/8 mm tape
• Device Marking: L4F
• Polarity Designator: Cathode Band
• Weight: 11.7 mg (approximately)
• Case: Epoxy, Molded
• 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
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SCHOTTKY BARRIER
RECTIFIER
1.0 AMPERES
40 VOLTS
SOD−123FL
CASE 498
PLASTIC
DEVICE MARKING
D
L4F
L4F = Specific Device Code
D = Date Code
ORDERING INFORMATION
Device Package Shipping†
MBR140SFT1 SOD−123FL
MBR140SFT3 SOD−123FL 10,000/Tape & Reel
3000/Tape & Reel
Semiconductor Components Industries, LLC, 2003
September, 2003 − Rev. 2
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
1 Publication Order Number:
MBR140SFT1/D
MBR140SFT1
MAXIMUM RATINGS
Rating Symbol Value Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
Average Rectified Forward Current (At Rated VR, TL = 112°C) I
Peak Repetitive Forward Current
(At Rated V
, Square Wave, 100 kHz, TL = 95°C)
R
Non−Repetitive Peak Surge Current
(Non−Repetitive peak surge current, halfwave, single phase, 60 Hz)
Storage Temperature T
Operating Junction Temperature T
Voltage Rate of Change (Rated VR, TJ = 25°C) dv/dt 10,000 V/s
THERMAL CHARACTERISTICS
Thermal Resistance − Junction−to−Lead (Note 1)
Thermal Resistance − Junction−to−Lead (Note 2)
Thermal Resistance − Junction−to−Ambient (Note 1)
Thermal Resistance − Junction−to−Ambient (Note 2)
1. Mounted with minimum recommended pad size, PC Board FR4.
2. Mounted with 1 in. copper pad (Cu area 700 mm
2
).
V
V
I
I
RRM
RWM
V
R
O
FRM
FSM
stg
J
R
tjl
R
tjl
R
tja
R
tja
40 V
1.0 A
2.0 A
30 A
−55 to 150 °C
−55 to 125 °C
26
21
325
82
°C/W
ELECTRICAL CHARACTERISTICS
Maximum Instantaneous Forward Voltage (Note 3), See Figure 2
(IF = 0.1 A)
(I
= 1.0 A)
F
= 3.0 A)
(I
F
Maximum Instantaneous Reverse Current (Note 3), See Figure 4
(VR = 40 V)
(V
= 20 V)
R
3. Pulse Test: Pulse Width ≤ 250 µs, Duty Cycle ≤2%.
V
F
I
R
TJ = 25°C TJ = 85°C
0.36
0.55
0.85
0.30
0.515
0.88
TJ = 25°C TJ = 85°C
0.5
0.15
25
18
V
mA
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2
10
MBR140SFT1
100
10
1.0
TJ = 125°C
TJ = 85°C
TJ = −40°C
0.1
0.1
v
, INSTANTANEOUS FORWARD VOLTAGE (VOLTS)
, INSTANTANEOUS FORWARD CURRENT (AMPS)
i
F
F
Figure 1. Typical Forward Voltage Figure 2. Maximum Forward Voltage
100E−3
10E−3
1.0E−3
100E−6
10E−6
, REVERSE CURRENT (AMPS)
R
I
1.0E−6
10 20 30
, REVERSE VOLTAGE (VOLTS)
V
R
TJ = 25°C
TJ = 125°C
TJ = 85°C
TJ = 25°C
0.70.3 0.5 0.9
1.0
TJ = 125°C
TJ = 85°C
0.1
0.1
, MAXIMUM INSTANTANEOUS FORWARD VOLTAGE
V
F
, INSTANTANEOUS FORWARD CURRENT (AMPS)
F
I
1.0E+0
100E−3
10E−3
1.0E−3
100E−6
, MAXIMUM REVERSE CURRENT (AMPS)
10E−6
R
I
400
10 20 30
VR, REVERSE VOLTAGE (VOLTS)
TJ = 25°C
0.70.3 0.5 0.9
(VOLTS)
TJ = 85°C
TJ = 25°C
400
Figure 3. Typical Reverse Current Figure 4. Maximum Reverse Current
1.8
1.6
1.4
SQUARE
1.2
1
0.8
0.6
0.4
Ipk/Io = 10
Ipk/Io = 20
0.2
0
, AVERAGE FORWARD CURRENT (AMPS)
O
I
3525
T
, LEAD TEMPERATURE (°C)
L
Figure 5. Current Derating
dc
freq = 20 kHz
WAVE
Ipk/Io =
Ipk/Io = 5
55 115
7545 65 85 125
95 105
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1.0
0.9
0.8
0.7
0.6
Ipk/Io = 10
Ipk/Io = 20
Ipk/Io = 5
Ipk/Io =
SQUARE
WAVE
dc
0.5
0.4
0.3
0.2
0.1
, AVERAGE POWER DISSIPATION (WATTS)
FO
P
0
0.20
IO, AVERAGE FORWARD CURRENT (AMPS)
0.6 1.4
1.00.4 0.8 1.2 1.6
Figure 6. Forward Power Dissipation
3
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