BL
FEATURES
GALAXY ELECTRICAL
SR2020CT
- -
- SR2060CT
REVERSE VOLTAGE: 20 - 60 V
FORWARD CURRENT: 20 A
TO-220AB
DUAL SCHOTTKY RECTIFIERS
Metal-Semiconductor junction with guard ring
Epitaxial construction
For use in low voltage,high frequency inverters free
xxxx
wheeling,and polarity protection applications
Low forward voltage drop,low switching losses
High surge capability
The plastic material carries U/L recognition 94V-0
MECHANICAL DATA
Case:JEDEC TO--220AB,molded plastic
Terminals: Leads ,solderable per MIL- STD-111
j kkn
kkkk202,
Method 208
Polarity: As marked
Weight: 0.08ounce, 2.24 grams
Mounting position: Any
½½
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
ambient temperature unless otherwise specified.
Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate by 20%.
SR
2020CT
Maximum recurrent peak reverse voltage
Working peak reverse voltage
Maximum DC blocking voltage
Maximum average forw ard rectified current
v
9.5mm lead length,
@ T
A
=100
Peak forw ard surge current
8.3
ms single half
v
sine-w ave superimposed on rated load
v
(JEDEC Method) @T
J
=125
Maximum instantaneous forw ard voltage per leg
@ 10A(Note1)
Maximum reverse current
@T
A
=25
SR
2030CT
30
21
30
SR
2040CT
40
28
40
20.0
SR
2050CT
50
35
50
SR
2060CT
60
42
60
UNITS
V
V
V
A
V
RRM
V
RMS
V
DC
I
F(AV)
20
14
20
I
FSM
150.0
A
V
F
I
R
T
J
T
STG
0.65
1.0
0.75
V
mA
50.0
-55 --- +150
-55 --- +150
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at rated DC blocking voltage @T
A
=100
Operating junction temperature range
Storage temperature range
Note: 1. Pulse test:300us pulse width,1% duty cy cle.
Document Number 0267004
BL
GALAXY ELECTRICAL
1.
RATINGS AND CHARACTERISTIC CURVES
FIG.1 --FORWARD CURRENT DERATING CURVE
INSTANTANEOUS REVERSE CURRENT
MILLIAMPERES
AVERAGE FORWARD CURRENT
SR2020CT - - - SR2060CT
FIG.2 -- TYPICAL REVERSE CHARACTERISTICS
PER LEG
10
SR2020CT-SR2040CT
SR2050CT-SR2060CT
30
T
J
=125℃
1
25
AMPERES
20
Resistive or inductive load
15
.1
T
J
=75℃
10
.01
5
T
J
=25℃
.001
0
20
40
60
80
100
0
0
50
100
150
CASE TEMPERATURE,
FIG.3 -- TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS PER LEG
INSTANTANEOUS FORWARD CURRENT
PERCENT OF RATED PEAK REVERSE VOLTAGE, %
FIG.4 -- PEAK FORWARD SURGE CURRENT
PEAK FORWARD SURGE CURRENT
AMPERES
50
200
180
160
140
120
100
80
60
40
1
5
10
50
100
10
T
J
=125
Pulse width = 300
µ
s
1% Duty Cycle
AMPERES
T
J
=25
1
T
J
=T
J
MAX.
8.3ms Single Half Sine-Wave
(JEDEC Method)
.1
SR2020CT-SR2040CT
SR2050CT-SR2060CT
.01
0
.1 .2
.3
.4
.5 .6
.7
.8
.9 1.0 1.1 1.2
INSTANTANEOUS FORWARD VOLTAGE, VOLTS
FIG.5 -- TYPICAL JUNCTION CAPACITANCE
/W
NUMBER OF CYCLE AT 60Hz
FIG.6 -- TYPICAL TRANSIENT THERMAL IMPEDANCE
100
JUNCTION CAPACITANCE, pF
T
J
=25
1000
TRANSIENT THERMAL IMPEDANCE,
4000
10
1
SR2020CT-SR2040CT
SR2050CT-SR2060CT
100
0.1
1
10
100
0.1
0.01
0.1
1
10
100
REVERSE VOLTAGE, VOLTS
PULSE DURATION, Sec
www.galaxycn.com
Document Number 0267004
BL
GALAXY ELECTRICAL
2.
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