RB491D Rohm, RB491D Datasheet
RB491D
Manufacturer Part Number
RB491D
Description
Schottky barrier diode
Manufacturer
Rohm
Datasheet
1.RB491D.pdf
(2 pages)
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Diodes
Schottky barrier diode
RB491D
!Applications
Low-power rectification
For switching power supply
!Features
1) Small surface mounting type. (SMD3)
2) Ultra low V
3) I
!Construction
Silicon epitaxial planar
!Circuit
! ! ! ! Absolute maximum ratings (Ta=25°C)
! ! ! ! Electrical characteristics (Ta=25°C)
Note) ESD sensitive product handling required.
Forward voltage
Reverse current
∗ 60Hz for 1
F
Peak reverse voltage
DC reverse voltage
DC forward current
Peak forward surge current ∗
Junction temperature
Storage temperature
=1.0A guaranteed despite the size.
Parameter
Parameter
F
. (V
F
=0.40V Typ. at 1A)
Symbol
Symbol
V
I
R
Tstg
F
V
I
V
FSM
Tj
I
RM
F
R
Min.
−
−
−40∼+125
Limits
125
1.0
25
20
3
Typ.
−
−
Max.
0.45
200
Unit
! ! ! ! External dimensions (Units : mm)
˚C
˚C
V
V
A
A
ROHM : SMD3
EIAJ : SC-59
JEDEC : SOT-346
Unit
µA
V
E
0.95 0.95
2.9±0.2
1.9±0.2
I
V
2
F
(All leads have the same dimensions)
=1.0A
R
D
=20V
0.4
+0.1
−0.05
Conditions
0.15
+0.1
−0.06
1.1
0.8±0.1
+0.2
−0.1
0~0.1
RB491D
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RB491D Summary of contents
Page 1
... E 2 (All leads have the same dimensions) ROHM : SMD3 EIAJ : SC-59 JEDEC : SOT-346 Limits Unit 1 125 ˚C −40∼+125 ˚C Min. Typ. Max. Unit − − 0. − − µA 200 V RB491D +0.2 1.1 −0.1 0.8±0.1 0~0.1 D +0.1 +0.1 0.4 0.15 −0.05 −0.06 Conditions =1.0A =20V R ...
Page 2
... V) R Fig.2 Reversecharacteristics 1 D=0 sine 0.2 D=0.1 0.5 D=0. 100 125 AMBIENT TEMPERATURE : Ta (˚C) Fig.5 Derating curve (I - Ta) O RB491D 10000 f=1MHz 1000 100 REVERSE VOLTAGE : Fig.3 Capacitance between terminals characteristics ...