CHENMKO ENTERPRISE CO.,LTD
SURFACE MOUNT
SCHOTTKY BARRIER DIODE
VOLTAGE 25 Volts CURRENT 0.7 Ampere
APPLICATION
* Low power rectification for switching power supply
CH461FPT
FEATURE
* Small surface mounting type. (SC-70/SOT-323)
* Ultra low VF. (VF=0.45V Typ. at 0.7A)
* IF=0.7A guaranteed desite the size
(2)
(3)
SC-70/SOT-323
1.3±0.1
0.65
2.0±0.2
0.65
(1)
CONSTRUCTION
* Silicon epitaxial planar
0.3±0.1
1.25±0.1
MARKING
* 3F
0.05~0.2
0.1Min.
0.8~1.1
0~0.1
2.0~2.45
CIRCUIT
(2)
(1)
(3)
Dimensions in millimeters
SC-70/SOT-323
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
CH461FPT
25
18
20
0.7
3.0
20
+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=
700mA
Maximum Average Reverse Current at V
R=
20V
SYMBOL
V
F
I
R
CH461FPT
0.49
200
UNITS
Volts
uAmps
RATING CHARACTERISTIC CURVES ( CH461FPT )
FIG. 1 - FORWARD CHARACTERISTICS
10
REVERSE CURRENT, (mA)
FORWARD CURRENT, (A)
1
100m
10m
1m
0.1m
0
0.1
0.2
0.3
0.4
0.5
0.6
FORWARD VOLTAGE, (V)
2
=1
Ta
25
o
C
-25
o
C
FIG. 2 - REVERSE CHARACTERISTICS
1000
100
10
1
100u
10u
1u
0.1u
0
10
20
30
40
50
60
70
REVERSE VOLTAGE, (V)
o
-25 C
o
75 C
o
Ta=
125 C
75
5
C
o
o
C
o
25 C
FIG. 3 - TYPICAL JUNCTION CAPACITANCE
FORWARD POWER DISSIPATION, (W)
10000
JUNCTION CAPACITANCE , (pF)
f=1MHz
0.6
0.5
0.4
0.3
0.2
0.1
0
0
FIG. 4 - FORWARD POWER DISSIPATION
CHARACTERISTICS
DC
D=0.8
sine
D=0.3
D=0.2
D=0.1
D=0.5
1000
100
D=0.05
10
IF
IO
Tp
T
D=Tp/T
Tj=Tj Max.
1
0
5
10
15
20
25
30
35
40
REVERSE VOLTAGE, (V)
0.2
0.4
0.6
0.8
1.0
1.2
AVERAGE FORWARD CURRENT, (A)
FIG. 5 - DERATING CURVE BY AMBIENT
( ON GLASS EPOXY PCBS )
AVERAGE FORWARD CURRENT, (A)
1.0
DC
D=0.8
sine
Tp
IF
IO
T
D=Tp/T
VR=VRM/2
0.8
D=0.5
0.6
D=0.3
D=0.2
0.4
D=0.1
D=0.05
0.2
0
0
25
50
75
o
100
125
AMBIENT TEMPERATURE, (
C
)
模拟电子
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