SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER
VOLTAGE RANGE 20 to 40 Volts CURRENT 1.0 Ampere
RECTRON
SEMICONDUCTOR
TECHNICAL SPECIFICATION
FEATURES
* Fast switching
* Ideal for surface mounted applications
* Low leakage current
* Metallurgically bonded construction
* Mounting position: Any
* Weight: 0.015 gram
* Epoxy: Device has UL flammability classification 94V-O
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
o
C ambient temperature unless otherwise specified.
Single phase, half wave, 60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
SM5817
THRU
SM5819
MELF
MAXIMUM RATINGS (At T
A
= 25
o
C unless otherwise noted)
ELECTRICAL CHARACTERISTICS (At T
A
= 25
o
C unless otherwise noted)
NOTES : 1. Thermal Resistance (Junction to Ambient): Vertical PC Board Mounting, 0.5" (12.7mm) Lead Length.
2. Measured at 1 MHz and applied reverse voltage of 4.0 volts.
Dimensions in inches and (millimeters)
2002-10
RATINGS
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current
at T
A
=90
o
C
Peak Forward Surge Current 8.3 ms single half sine-wave
superimposed on rated load (JEDEC method)
Typical Thermal Resistance (Note) 1
Typical Junction Capacitance (Note 2)
SYMBOL
V
RRM
V
DC
I
FSM
C
J
T
J
, T
STG
V
RMS
UNITS
20
Volts
Volts
Volts
Amps
14
28
40
1.0
25
80
110
Amps
0
C / W
0
C
30
21
Storage Operating Temperature Range
R
J A
I
O
-55 to + 150
pF
20
30
40
SM5817
SM5818
SM5819
CHARACTERISTICS
Maximum Average Reverse Current at
Rated DC Blocking Voltage
V
F
SYMBOL
I
R
U N I T S
m A m p s
Volts
Maximum Forward Voltage at 3.1A DC
Maximum Instantaneous Forward Voltage at 1.0A DC
Volts
1.0
SM5817
SM5818
SM5819
.45
.55
.60
.75
V
F
.875
.90
10
@T
A
= 25
o
C
@T
A
= 100
o
C
.095 (2.4)
.106 (2.7)
.028 (.60)
.018 (.46)
.190 (4.8)
.205 (5.2)
SOLDERABLE
ENDS
MECHANICAL DATA
RECTRON
FIG. 1 - TYPICAL FORWARD CURRENT
DERATING CURVE
AYERAGE FORWARD CURRENT, (A)
1.0
.75
.50
.25
0
0
25
50
75
100
125
150
175
Single Phase
Half Wave 60Hz
Resistive or
Inductive Load
LEAD TEMPERATURE, ( )
FIG. 5 - TYPICAL JUNCTION CAPACITANCE
JUNCTION CAPACITANCE, (pF)
400
200
100
60
40
20
10
.1
.4
1.0
4
10
40
REVERSE VOLTAGE, (V)
TJ = 25
FIG. 3 - TYPICAL REVERSE CHARACTERISTICS
100
10
1.0
0.1
.01
.001
INSTANTANEOUS REVERSE CURRENT (mA)
TJ = 25
TJ = 75
TJ = 125
20
40
60
80
100
120
140
PERCENT OF RATED PEAK
REVERSE VOLTAGE, (%)
10
RATING AND CHARACTERISTIC CURVES ( SM5817 THRU SM5819 )
FIG. 4 - MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT
PEAK FORWARD SURGE CURRENT, (A)
30
25
20
15
10
5
0
NUMBER OF CYCLES AT 60HZ
1
2
5
10
20
50
100
8.3ms Single Half Sine-Wave
(JEDEC Method)
FIG. 2 - TYPICAL INSTANTANEOUS
FORWARD CHARCTERISTICS
INSTANTANEOUS FORWARD CURRENT, (A)
20
10
1.0
0.1
INSTANTANEOUS FORWARD VOLTAGE, (V)
.1
.3
.5
.7
.9
1.1
1.3
1.5
1.7
1.9
2.1
TJ = 25
J
Pulse Width = 300uS
1% Duty Cycle
SM5817
SM5819
SM5818
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