SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER
VOLTAGE RANGE 20 to 40 Volts CURRENT 1.0 Ampere
RECTRON
SEMICONDUCTOR
TECHNICAL SPECIFICA TION
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 oC ambient temperature unless otherwis e 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 TA = 25oC unless otherwise noted)
ELECTRICAL CHARACTERISTICS
(At TA = 25oC 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
Rθ
JA
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
UNITS
mAmps
VoltsMaximum 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 DA TA
RECTRON
FIG. 1 - TYPICAL FORWARD CURRENT
DERATING CURVE
AYERAGE FORWARD CURRENT, (A)
1.0
.75
.50
.25
00 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
Mounting Pad Layout
RECTRON
.100 (2.54)
.200 (5.08)
.300 (7.62)
.100 (2.54)
.100 (2.54) F-SLOT WIDTH
OPTIMUM PAD SIZE
Dimensions in inches and (millimeters)
