CHENMKO ENTERPRISE CO.,LTD
SURFACE MOUNT
SCHOTTKY BARRIER DIODE
VOLTAGE 40 Volts CURRENT 1 Ampere
APPLICATION
* Low power recification for switching power supply
CH490DPT
FEATURE
* Small surface mounting dual element linear type.
(SOT-23)
* Ultra low VF. (Vf=0.50V typ. at 1A)
* IF=1.0A guaranteed despite size
.110 (2.80)
.082 (2.10)
.119 (3.04)
.041 (1.05)
.033 (0.85)
SOT-23
(1)
.066 (1.70)
(3)
CONSTRUCTION
* Silicon epitaxial planar
(2)
MARKING
* 10F
.055 (1.40)
.047 (1.20)
.103 (2.64)
.086 (2.20)
.028 (0.70)
.020 (0.50)
.007 (0.177)
.018 (0.30)
.002 (0.05)
CIRCUIT
(2)
(1)
.045 (1.15)
.033 (0.85)
.019 (0.50)
(3)
Dimensions in inches and (millimeters)
SOT-23
MAXIMUM RATINGES
( At T
A
= 25
o
C unless otherwise noted )
RATINGS
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current
Peak Forward Surge Current at 8.3 mSec single half sine-wave
Typical Junction Capacitance between Terminal (Note 1)
Maximum Operating Temperature Range
Storage Temperature Range
SYMBOL
V
RRM
V
RMS
V
DC
I
O
I
FSM
C
J
T
J
T
STG
CH490DPT
40
28
40
1.0
3.0
30
+125
-40 to +125
UNITS
Volts
Volts
Volts
Amps
Amps
pF
o
C
C
o
ELECTRICAL CHARACTERISTICS
( At T
A
= 25
o
C unless otherwise noted )
CHARACTERISTICS
Maximum Instantaneous Forward Voltage at I
F=
1A
Maximum Average Reverse Current at V
R=
30V
SYMBOL
V
F
I
R
CH490DPT
0.53
100
UNITS
Volts
uAmps
RATING CHARACTERISTIC CURVES ( CH490DPT )
FIG. 1 - FORWARD CHARACTERISTICS
10
1
REVERSE CURRENT, (mA)
FORWARD CURRENT, (A)
1000
100
10
o
75 C
o
Ta=125 C
FIG. 2 - REVERSE CHARACTERISTICS
100m
10m
1m
0.1m
0
2
=1
Ta
5
o
75
C
C
o
1
100u
10u
1u
0.1u
0
10
20
30
40
50
60
70
o
25 C
25
o
C
-25
o
C
o
-25 C
0.1
0.2
0.3
0.4
0.5
0.6
FORWARD VOLTAGE, (V)
REVERSE VOLTAGE, (V)
FIG. 3 - TYPICAL JUNCTION CAPACITANCE
10000
JUNCTION CAPACITANCE , (pF)
f=1MHz
1000
100
10
1
0
5
10
15
20
25
30
35
40
REVERSE VOLTAGE, (V)
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