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  Datasheet File OCR Text:
 BL GALAXY ELECTRICAL
DUAL SCHOTTKY RECTIFIERS
FEATURES
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
SR2020CT - - - SR2060CT
REVERSE VOLTAGE: 20 - 60 V FORWARD CURRENT: 20 A TO-220AB
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
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, @ TA=100 Peak forw ard surge current 8.3 ms single half v sine-w ave superimposed on rated load v (JEDEC Method) @TJ=125 Maximum instantaneous forw ard voltage per leg @ 10A(Note1) Maximum reverse current @TA=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
VRRM VRMS VDC IF(AV)
20 14 20
IFSM
150.0
A
VF IR TJ TSTG
0.65 1.0
0.75
V
mA 50.0 -55 --- +150 -55 --- +150
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at rated DC blocking voltage @TA=100 Operating junction temperature range Storage temperature range
Note: 1. Pulse test:300us pulse width,1% duty cy cle.
Document Number 0267004
BLGALAXY 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
TJ=125ae 1
25
AMPERES
20
Resistive or inductive load
15
.1 TJ=75ae
10
.01
5
TJ=25ae .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
TJ=125
Pulse width = 300s 1% Duty Cycle
AMPERES
TJ=25 1
TJ=TJMAX. 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
TJ=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
BLGALAXY ELECTRICAL
2.


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