CHENMKO CH491DPT

CHENMKO ENTERPRISE CO.,LTD
CH491DPT
SURFACE MOUNT
SCHOTTKY BARRIER DIODE
VOLTAGE 25 Volts CURRENT 1 Ampere
APPLICATION
* Low power recification for switching power supply
SOT-23
.019 (0.50)
.041 (1.05)
.033 (0.85)
* Silicon epitaxial planar
.066 (1.70)
CONSTRUCTION
.110 (2.80)
.082 (2.10)
.119 (3.04)
(1)
MARKING
* 10T
CIRCUIT
(2)
(2)
.103 (2.64)
.086 (2.20)
.028 (0.70)
.020 (0.50)
.007 (0.177)
.055 (1.40)
.047 (1.20)
(3)
.045 (1.15)
.033 (0.85)
(1)
Dimensions in inches and (millimeters)
(3)
.002 (0.05)
* Small surface mounting dual element linear type.
(SOT-23)
* Ultra low VF. (Vf=0.40V typ. at 1A)
* IF=1.0A guaranteed despite size
.018 (0.30)
FEATURE
SOT-23
MAXIMUM RATINGES ( At TA = 25oC unless otherwise noted )
SYMBOL
CH491DPT
UNITS
Maximum Recurrent Peak Reverse Voltage
RATINGS
VRRM
25
Volts
Maximum RMS Voltage
VRMS
18
Volts
Maximum DC Blocking Voltage
VDC
20
Volts
IO
1.0
Amps
IFSM
3.0
Amps
pF
Maximum Average Forward Rectified Current
Peak Forward Surge Current at 8.3 mSec single half sine-wave
Typical Junction Capacitance between Terminal (Note 1)
CJ
30
Maximum Operating Temperature Range
TJ
+125
o
C
TSTG
-40 to +125
o
C
Storage Temperature Range
ELECTRICAL CHARACTERISTICS ( At TA = 25oC unless otherwise noted )
SYMBOL
CH491DPT
UNITS
Maximum Instantaneous Forward Voltage at IF= 1A
CHARACTERISTICS
VF
0.45
Volts
Maximum Average Reverse Current at VR= 20V
IR
200
uAmps
NOTES : 1. Measured at 1.0 MHZ and applied reverse voltage of 10 volts.
2. ESD sensitive product handling required.
2002-5
RATING CHARACTERISTIC CURVES ( CH491DPT )
FIG. 2 - REVERSE CHARACTERISTICS
FIG. 1 - FORWARD CHARACTERISTICS
1000
REVERSE CURRENT, (mA)
1
o
-25 o
C
=1
Ta
10m
25
C
C
o
75
100m
25 o
C
FORWARD CURRENT, (A)
10
1m
100
o
Ta=125 C
10
o
75 C
1
o
25 C
100u
10u
o
-25 C
1u
0.1u
0.1m
0
0.1
0.2
0.3
0.4
0.5
0
0.6
10
FORWARD VOLTAGE, (V)
FORWARD POWER DISSIPATION, (W)
JUNCTION CAPACITANCE , (pF)
f=1MHz
1000
100
10
1
5
10
15
20
25
30
35
40
REVERSE VOLTAGE, (V)
AVERAGE FORWARD CURRENT, (A)
IF
IO
DC
D=0.8
sine
Tp
D=0.5
1.0
T
D=Tp/T
VR=VRM/2
D=0.3
D=0.2
0.5 D=0.1
D=0.05
0
0
25
50
75
40
50
60
0.7
D=0.8
0.6
70
100
AMBIENT TEMPERATURE, (oC)
125
DC
D=0.5
sine
D=0.3
D=0.2
D=0.1
0.5
0.4
D=0.05
0.3
IF
IO
0.2
Tp
0.1
0
0
0.2
0.4
0.6
0.8
1.0
T
D=Tp/T
Tj=Tj Max.
1.2
AVERAGE FORWARD CURRENT, (A)
FIG. 5 - DERATING CURVE BY AMBIENT
1.5
30
FIG. 4 - FORWARD POWER DISSIPATION
CHARACTERISTICS
FIG. 3 - TYPICAL JUNCTION CAPACITANCE
10000
0
20
REVERSE VOLTAGE, (V)
1.4
1.6