SM17

MOSPEC
SM17 thru SM19
Surface Mount
Schottky Barrier rectifiers
SCHOTTKY BARRIER
RECTIFIERS
Using the Schottky Barrier principle with a Molybdenum barrier meta.
These state-of-the-art geometry features epitaxial construction with oxide
passivation and metal overlay contact. Ideally suited for low voltage, high
frequency rectification, or as free wheeling and polarity protection diodes,
in surface mount applications where compact size and weight are critical
to the system.
1.0 AMPERES
20-40 VOLTS
Features
＊Low Forward Voltage.
＊Low Switching noise.
＊High Current Capacity
＊Guarantee Reverse Avalanche.
＊Guard-Ring for Stress Protection.
＊Low Power Loss & High efficiency.
＊150℃ Operating Junction Temperature
＊Low Stored Charge Majority Carrier Conduction.
＊Plastic Material used Carries Underwriters Laboratory
Flammability Classification 94V-O
＊ Moisture Sensitivity Level: MSL-1
DO-214AC(SMA)
＊In compliance with EU RoHs 2002/95/EC directives
MAXIMUM RATINGS
Characteristic
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
RMS Reverse Voltage
Average Rectifier Forward Current
Non-Repetitive Peak Surge Current
(Surge applied at rate load conditions
half-wave, single phase,60Hz )
Operating and Storage Junction
Temperature Range
Symbol
SM17
SM18
SM19
Unit
VRRM
VRWM
VR
20
30
40
V
VR(RMS)
14
21
28
V
IO
1.0
A
IFSM
25
A
TJ , TSTG
-65 to +150
℃
DIM
A
B
C
D
E
F
G
H
MILLIMETERS
MIN
MAX
2.20
2.80
4.10
4.70
1.30
1.70
4.70
5.30
1.90
2.50
1.30
0.30
0.95
1.50
ELECTRIAL CHARACTERISTICS
Characteristic
Symbol
SM17
Maximum Instantaneous Forward Voltage
(IF =1.0 Amp)
(IF =3.0 Amp)
VF
0.45
0.75
Maximum Instantaneous Reverse Current
(Rated DC Voltage, TC = 25℃)
(Rated DC Voltage, TC = 125℃)
IR
0.5
10
Maximum Thermal Resistance Junction to
Case
RθJC
60
Typical Junction Capacitance
(Reverse Voltage of 4 volts & f=1 MHz)
CP
90
SM18
SM19
Unit
0.55
0.87
V
mA
o
80
C/W
pF
CASE--Transfer molded
plastic
OLARITY--Cathode indicated
polarity band
SM17 Thru SM19
NSTANTANEOUS FORWARD CURRENT (Amp.)
FIG-2 TYPICAL FORWARD CHARACTERISITICS
SM17
SM18-SM19
CASE TEMPERATURE (℃)
FORWARD VOLTAGE (Volts)
FIG-3 TYPICAL REVERSE CHARACTERISTICS
FIG-4 TYPICAL JUNCTION CAPACITANCE
Tj=125
o
o
Tj=75 c
o
Tj=25 c
PERCENT OF RATED REVERSE VOLTAGE (﹪)
JUNCTION CAPACITANCE (PF)
INSTANTANEOUS REVERSE CURRENT (mA.)
AVERAGE FORWARD RECTIFIED CURRENT (Amp.)
FIG-1 FORWARD CURRENT DERATING CURVE
SM17
SM18-SM19
REVERSE VOLTAGE (Volts)
PEAK FORWARD SURGE
CURRENT (Amp.)
FIG-5 PEAK FORWARD SURGE CURRENT
NUMBER OF CYCLES AT 60 Hz
8K-A