CHENMKO ENTERPRISE CO.,LTD
SURFACE MOUNT
SCHOTTKY BARRIER DIODE
VOLTAGE 25 Volts CURRENT 1 Ampere
APPLICATION
* Low power recification for switching power supply
CH491DPT
FEATURE
* Small surface mounting dual element linear type.
(SOT-23)
* Ultra low VF. (Vf=0.40V 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
* 10T
.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 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
CH491DPT
25
18
20
1.0
3.0
30
+125
-40 to +125
UNITS
Volts
Volts
Volts
Amps
Amps
pF
o
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=
20V
NOTES : 1. Measured at 1.0 MH
Z
and applied reverse voltage of 10 volts.
2. ESD sensitive product handling required.
SYMBOL
V
F
I
R
CH491DPT
0.45
200
UNITS
Volts
uAmps
2002-5
CHENMKO [ CHENMKO ENTERPRISE CO. LTD. ]
