RB461F
Diodes
Schottky barrier diode
RB461F
!Applications
Low-power rectification
For switching power supply
!Features
1) Small surface mounting type. (UMD3)
2) Ultra low V
F
.(V
F
=0.45V Typ. at 0.7A)
3) I
F
=0.7A guaranteed despite the size.
!Construction
Silicon epitaxial planar
!Circuit
!
!
!
!External dimensions
(Units : mm)
(All leads have the same dimensions)
0.30.1
0.1Min.
2.10.1
1.250.1
0
0.1
0.150.05
0.90.1
0.6
0.3
2.00.2
1.30.1
0.65
0.65
3 B
ROHM : UMD3
EIAJ : SC
-
70
JEDEC : SOT
-
323
!
!
!
!Absolute maximum ratings
(Ta=25
C)
Parameter
Symbol
V
RM
Limits
25
Unit
V
V
R
20
V
I
F
0.7
A
I
FSM
3
A
Tj
125
C
Tstg
-
40
+
125
C
Peak reverse voltage
DC reverse voltage
DC forward current
Peak forward surge current
Junction temperature
Storage temperature
60Hz for 1
!
!
!
!Electrical characteristics
(Ta=25
C)
Parameter
Forward voltage
Reverse current
Symbol
Min.
Typ.
Max.
Unit
Conditions
V
F
I
R
-
-
-
-
0.49
200
V
A
I
F
=700mA
V
R
=20V
Note) ESD sensitive product handling required.
RB461F
Diodes
!
!
!
!Electrical characteristic curves
(Ta=25
C)
Fig.1 Forward characteristics
0
0.2
0.3
0.4
0.5
0.6
0.1
0.1m
1m
100m
10m
10
1
FORWARD CURRENT
: I
F
(
A)
FORWARD
VOLTAGE : V
F
(V)
C
5
2
1
=
a
T
C
5
7
C
5
2
C
5
2
-
Fig.2 Reverse characteristics
0
20
30
40
50
60
70
10
0.1
10
1
100
10
1
1000
100
REVERSE CURRENT
: I
R
(
mA)
REVERSE VOLTAGE : V
R
(V)
Ta=125C
75C
25C
-
25C
Fig.3 Capacitance between
terminals characteristics
0
10
15
20
25
30
35
40
5
1
10
1000
100
10000
TERMINAL CAPACITANCE
: C
T
(pF
)
REVERSE
VOLTAGE : V
R
(V)
f=1MHz
0
0
0.2
0.4
0.6
0.8
1.0
1.2
0.2
0.1
0.3
0.4
0.5
0.6
FOR
W
ARD PO
WER DISSIP
A
TION :
P
F
(
W)
AVERAGE RECTIFIED FORWARD CURRENT : I
O
(A)
D=0.05
D=0.1
D=0.2
D=0.3
D=0.5
D=0.8
DC
sine
Tp
T
D=Tp/T
Tj=Tj Max.
I
F
I
O
Fig.4 Forward power dissipation
characteristics
1.0
0.8
0.6
0.4
0.2
0
0
25
50
75
100
125
A
VERA
GE RECTIFIED FOR
W
ARD CURRENT :
I
O
(
A)
AMBIENT TEMPERATURE : Ta (C)
D=0.3
D=0.2
D=0.1
D=0.05
DC
D=0.5
D=0.8
sine
Tp
T
D
=
Tp/T
V
R
=
V
RM
/ 2
I
F
I
O
Fig.5 Derating curve
(when mounted on a glass
epoxy PCBs board)
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