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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
1.30.1
0.65 2.00.2 0.65
(1)
CONSTRUCTION
* Silicon epitaxial planar
0.30.1 1.250.1
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 TA = 25oC 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 VRRM VRMS VDC IO IFSM CJ TJ TSTG CH461FPT 25 18 20 0.7 3.0 20 +125 -40 to +125 UNITS Volts Volts Volts Amps Amps pF
o
C C
o
ELECTRICAL CHARACTERISTICS ( At TA = 25oC unless otherwise noted ) CHARACTERISTICS Maximum Instantaneous Forward Voltage at IF= 700mA Maximum Average Reverse Current at VR= 20V SYMBOL VF IR CH461FPT 0.49 200 UNITS Volts uAmps 2002-5
NOTES : 1. Measured at 1.0 MHZ and applied reverse voltage of 10.0 volts. 2. ESD sensitive product handling required.
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 75 100 125 AMBIENT TEMPERATURE, (oC)

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