SM17 thru SM19
Surface Mount Schottky Power Rectifiers
P b
Lead(Pb)-Free
SCHOTTKY BARRIER
RECTIFIERS
1.0 AMPERES
20-40 VOLTS
Feature:
*Low Forward Voltage
*Low Switching Noise
*High Surge Capacity
*Guarantee Reverse Avalance
*Gurad-ing for Stress Protection
*Low Power Loss & High Efficiency
*125 C Operating Junction Temperature
*Low Stored Charge Majority Carrier Conduction
*Case: Epoxy, Molded
Product Description:
Using the Schottky Barrier principle with a Molybdenum barrier metal.
These state-of-are 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.
SMA(DO-214AC)
SMA Outline Dimension
B
Unit:mm
A
C
D
J
H
E
G
Dim
A
B
C
D
E
G
H
J
SMA
Min
2.20
4.00
1.27
0.15
4.48
0.10
0.76
1.70
Max
2.92
4.60
1.63
0.31
5.59
0.20
1.52
2.62
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Rev.A 23-Apr-08
SM17 thru SM19
Maximum Rating
Characteristic
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
RMS Reverse Voltage
Average Rectifier Forward Current
Peak Repetitive Forward Current
(Rate VR,Square Wave, 20 KHz)
Non-Repetitive Peak Square Current
(Surge Applied atRated Load Condition
Halfware, Single Phase, 60Hz)
Thermal Resistance Junction-ambient
Thermal Resistance Junction-case
Operating Temperature Range
Storage Temperature Range
Operating Ambient Temperature Range
R
θJA
R
θJC
TJ
T
STG
Top
88
40
+125
-65 to +125
-65 to +150
°C/W
°C/W
°C
°C
°C
IFSM
25
A
Symbol
VRRM
VRWM
VR
VR(RMS)
IF(AV)
I FM
SM17
20
SM18
30
SM19
40
UNIT
V
14
21
1.0
1.0
28
V
A
A
Electrical Characteristic
Characteristic
Maximum Instanatneous Forward Voltage
(IF=1.0Amp)
Maximum Instantaneous Reverse Current
(Rated DC Voltage,Tc=25 C)
(Rated DC Voltage,Tc=100 C)
Typical Junction Capacitance
(VR=4.0V, f=1.0MHz)
CP
IR
0.5
50
50
P
F
mA
Symbol
VF
SM17
0.450
SM18
0.50
SM19
0.50
UNIT
V
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Rev.A 23-Apr-08
SM17 thru SM19
AVERAGEFOR WARDRECTIFIED
CURRENT(AMP.)
1.2
1
0.8
0.6
0.4
0.2
0
0 10 20 30 40 50 60 70 80 90 100 110 120 130140
FIG.1 Forward Current Derating Curve
LEAD TEMPERATURE( C)
INSTANTANEOUSFOR WARDCURRENT(AMP .)
10
JUNCTIONCAP ACITANCE(PF)
100
1
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
10
0.1
FIG.2 Typical Forward Characteristics
FORWARD VOLTAGE(V)
FIG.3 Typcial Junction Capacitance
REVERSE VOLTAGE(V)
1
10
PEAKFOR WARDSURGECURRENT(AMP .)
30
25
20
15
10
5
0
1
10
100
FIG.4 Peak Forward Surge Current
NUMBEROF CYCLES AT60Hz
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Rev.A 23-Apr-08