PACELEADER PSD491

PSD490 thru PSD491
SURFACE MOUNT SCHOTTKY BARRIER DIODES
SCHOTTKY BARRIER RECTIFIERS 1.0A MPERES 20~40 VOLTS
SC-59
1.06(2.70)
1.22(3.10)
.049(1.25)
.065(1.65)
3
.089(2.25)
1.18(3.00)
TOP VIEW
1
2
.051(1.30)
0.67(1.70)
.014(0.35)
.020(0.50)
.067(1.7)
.090(2.30)
.039(1.00)
0.00
.004(0.10)
.051(1.30)
.004(0.10)
.010(0.26)
.008(0.20)
.024(0.60)
FEATURES
MECHANICAL DATA
Low Turn-on Voltage
Fast Switching
PN Junction Guard Ring for Transient and
ESD Protection
Case SOT-346/SC-59 Molded Plastic
Terminals Solderable per MIL-STD-202, Method 208
Polarity See Diagrams Below
Weight 0.008gram (approx)
Mounting Position Any
MAXIMUM RATIXGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25oC ambient temperature unless otherwise specified
Single phase, half wave, 60Hz, resistive or inductive load
For capacitive load, derate current by 20%
TYPE NUMBER
Maximum Recurrent Peak Reverse Voltage
PSD491
PSD490
UNITS
20
40
Volts
Maximum RMS Voltage
14
28
Volts
Maximum DC Blocking Voltage
20
40
Volts
Maximum Average Forward Rectified Current
1.0
A
Peak Forward Surge Current 8.3mm Single Half Sine-Wave
Superimposed on Rated Load (JEDEC Method)
3.0
A
Maximum Instantaneous Forward Voltage at 1.0A
0.45
Maximum DC Reverse Current TA=250C
at Rated DC Blocking Voltage TA=1000C
0.53
0.2
4.0
V
mA
Operating Temperature Range TJ
-25 to +125
0
Storage Temperature Range TSTG
-50 to +125
0
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1
C
C
PSD490 thru PSD491
SURFACE MOUNT SCHOTTKY BARRIER DIODES
RATING AND CHARACTERISTICS CURVES PSD490 THRU PSD491
AVERAGE FORWARD CURRENT(A)
91
10
PS
D4
90
PS
D4
INSTANTANEOUS FORWARE CURRENT(A)
50
3.0
1.0
1.2
1.0
0.8
0.6
Single Phase
Half Wave 60Hz
Resistive Or Inductive Load
0.4
0.2
0
0
T=25 C
Pulse Width 300us
1% Duty Cycle
20
.1
.3
.5
.7
.9
1.1
1.3
60
80
100
120
140
160
180
200
AMBIENT TEMPERATURE ( C)
FIG.2 Typical Forward Current Derating Curve
0.1
.01
40
1.5
175
FIG.1 Typcial Forward Characteristics
100
JUNCTION CAPACITANCE (pF)
FORWARE VOLTAGE.(V)
150
125
100
75
50
REVERSE LEAKAGE CURRENT (mA)
25
10
0
.01
.05
.1
.5
1
5
10
REVERSE VOLTAGE (V)
FIG .4 Typical Junction Capacitance
1.0
Tj=75 C
Tj=25 C
.1
.01
0
20
40
60
80
100
120
140
PERCENTAGE RATED PEAK REVERSE VOLTAGE
FIG.3 Typical Reverse Characteristics
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2
50
100