Datasheet MBR140SFT1 Datasheet (ON Semiconductor)

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

MBR140SFT1

1000

125

R

= 25.6°C/W



JA

115

130°C/W

TJ = 25°C

105

324.9°C/W

95

100

85

235°C/W

75

TEMPERATURE (°C)

, DERATED OPERATING

C, CAPACITANCE (pF)

10

15510 2025

V

, REVERSE VOLTAGE (VOLTS)

R

Figure 7. Capacitance

300

J

T

65
55

4035

V

R

15510 2025 4035

, DC REVERSE VOLTAGE (VOLTS)

300

Figure 8. Typical Operating Temperature

Derating*

* Reverse power dissipation and the possibility of thermal runaway must be considered when operating this device under any re­verse voltage conditions. Calculations of T
T

may be calculated from the equation: TJ = T

J

This graph displays the derated allowable T
where r(t) = Rthja. For other power applications further calculations must be performed.

therefore must include forward and reverse power effects. The allowable operating

J

− r(t)(Pf + Pr) where

Jmax

r(t) = thermal impedance under given conditions,
Pf = forward power dissipation, and
Pr = reverse power dissipation

due to reverse bias under DC conditions only and is calculated as TJ = T

J

Jmax

− r(t)Pr,

1000

100

0.1

r(t), TRANSIENT THERMAL RESISTANCE

10

D = 0.5

0.2

0.1

0.05

P

0.01

1

SINGLE PULSE

Test Type > Min Pad < Die Size 38x38 @ 75% mils

0.0001 0.001 0.01 1 10 1000.000001
t

, TIME (sec)

1

(pk)

t

1

t

2

DUTY CYCLE, D = t1/t

JA = 321.8 °C/W

2

10000.10.00001

Figure 9. Thermal Response

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4

MBR140SFT1

PACKAGE DIMENSIONS

SOD−123LF

CASE 498−01

ISSUE O

B

L

A

POLARITY INDICATOR
OPTIONAL AS NEEDED

C

D

H

K

E

L

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSIONS A AND B DO NOT INCLUDE MOLD
FLASH.

4. DIMENSIONS D AND J ARE TO BE MEASURED
ON FLAT SECTION OF THE LEAD: BETWEEN 0.10
AND 0.25 MM FROM THE LEAD TIP.

DIM MIN MAX MIN MAX

A 1.50 1.80 0.059 0.071
B 2.50 2.90 0.098 0.114
C 0.90 1.00 0.039
D 0.70 1.10 0.028 0.043
E 0.55 0.95 0.022 0.037
H 0.00 0.10 0.000 0.004
J 0.10 0.20 0.004 0.008
K 3.40 3.80 0.134 0.150
L 0 8 °°0 8 °°

INCHESMILLIMETERS

0.035

J

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5

MBR140SFT1

RECOMMENDED FOOTPRINT FOR SOD−123FL

0.91

0.036

1.22

0.048

2.36

0.093

4.19

0.165

SOD−123

mm

inches

ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
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local Sales Representative.

MBR140SFT1/D

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