ROHM RB461F Datasheet

Diodes

Schottky barrier diode

RB461F

RB461F

Applications

!

Low-power rectification
For switching power supply

Features

!

1) Small surface mounting type. (UMD3)

2) Ultra low V

F

3) I

=0.7A guaranteed despite the size.

Construction

!

F

.(VF=0.45V Typ. at 0.7A)

Silicon epitaxial planar

Circuit

!

External dimensions

!!!!

2.0±0.2

1.3±0.1

(All leads have the same dimensions)

ROHM : UMD3
EIAJ : SC
JEDEC : SOT

-

70

-

323

0.650.65

3 B

0.3±0.1

(Units : mm)

2.1±0.1

1.25±0.1

0.15±0.05

0.9±0.1

0.60.3

0∼0.1

0.1Min.

Absolute maximum ratings

!!!!

Parameter Symbol

Peak reverse voltage
DC reverse voltage
DC forward current
Peak forward surge current
Junction temperature
Storage temperature

∗ 60Hz for 1

Electrical characteristics

!!!!

Parameter

Forward voltage
Reverse current

Note) ESD sensitive product handling required.

(Ta=25°C)

V

∗

I

Tstg −40∼+125 ˚C

(Ta=25°C)

Symbol Min. Typ. Max. Unit Conditions

V

I

Limits

RM

V

R

I

F

FSM

Tj 125 ˚C

F

R

25
20 V

0.7 A
3A

−

−

−

−

Unit

0.49
200

V

V

IF=700mA

µA

V

R

=20V

Diodes

Electrical characteristic curves

!!!!

10

A)

1

(

F

100m

10m

FORWARD CURRENT : I

0.1m

C

˚

C

5

˚

C

2

5

˚

1

7

C

5

=

a

T

˚

2

5

2

−

1m

0 0.2 0.3 0.4 0.5 0.60.1

FORWARD VOLTAGE : V

Fig.1 Forward characteristics

F

(

V)

(Ta=25°C)

mA)

(

R

REVERSE CURRENT : I

1000

100

Ta=125˚C

10

1

100µ

75˚C

25˚C

10µ

1µ

0.1µ

−25˚C

0 20304050607010

REVERSE VOLTAGE

Fig.2 Reverse characteristics

RB461F

10000

(pF)

T

1000

100

10

TERMINAL CAPACITANCE : C

1

0101520253035405

: V

R

(

V)

REVERSE VOLTAGE : V

Fig.3 Capacitance between

terminals characteristics

R

(V)

f=1MHz

0.6

W)

(

F

0.5

0.4

0.3

D=0.05

D=0.1

D=0.2

D=0.3

sine

D=0.5

0.2

0.1

FORWARD POWER DISSIPATION : P

0

0 0.2 0.4 0.6 0.8 1.0 1.2

Tp

D=Tp/T
Tj=Tj Max.

AVERAGE RECTIFIED FORWARD CURRENT : I

Fig.4 Forward power dissipation

characteristics

D=0.8

I

F

I

O

T

1.0

DC

O

A)

(

DC

D=0.8

0.8

0.6

0.4

0.2

0

AVERAGE RECTIFIED FORWARD CURRENT : IO

0 25 50 75 100 125

(

A)

sine

D=0.5

D=0.3

D=0.2

D=0.1

D=0.05

AMBIENT TEMPERATURE : Ta (˚C)

IF
IO

Tp

T

=

Tp/T

D

R

=

VRM / 2

V

Fig.5 Derating curve

(when mounted on a glass
epoxy PCBs board)