- 178 -
SRA2020 THRU SRA2060
20.0 AMPS. Schottky Barrier Rectifiers
Voltage Range
20 to 60 Volts
Current
20.0 Amperes
Features
Low forward voltage drop
High current capability
High
reliability
High surge current capability
Mechanical Data
Cases: TO-220A molded plastic
Epoxy: UL 94V-O rate flame retardant
Terminals: Leads solderable per
MIL-STD-202, Method 208 guaranteed
Polarity:
As
marked
High temperature soldering guaranteed:
260
O
C/10 seconds.25",(6.35mm) from
case.
Weight: 2.24 grams
TO-220A
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25
ambient temperature unless otherwise specified.
Single phase, half wave, 60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%
Type Number
Symbol SRA
2020
SRA
2030
SRA
2040
SRA
2050
SRA
2060
Units
Maximum Recurrent Peak Reverse Voltage
V
RRM
20 30 40 50 60 V
Maximum RMS Voltage
V
RMS
14 21 28 35 42 V
Maximum DC Blocking Voltage
V
DC
20 30 40 50 60 V
Maximum Average Forward Rectified Current
See Fig. 1
I
(AV)
20.0 A
Peak Forward Surge Current, 8.3 ms Single
Half Sine-wave Superimposed on Rated
Load (JEDEC method )
I
FSM
300 A
Maximum Instantaneous Forward Voltage
@20.0A
V
F
0.55
0.70
V
Maximum D.C. Reverse Current @ Tc=25
at Rated DC Blocking Voltage @ Tc=100
I
R
1.0
50
mA
mA
Typical Thermal Resistance (Note)
R
JC
1.5
/W
Operating Junction Temperature Range
T
J
-65 to +125
-65 to +150
Storage Temperature Range
T
STG
-65
to
+150
Notes:
Mounted on Heatsink Size of 2 in x 3 in x 0.25 in Al-Plate.
.412(10.5)
MAX
.185(4.70)
.175(4.44)
.055(1.40)
.045(1.14)
.27(6.86)
.23(5.84)
.11(2.79)
.10(2.54)
.025(0.64)
.014(0.35)
.154(3.91)
.148(3.74)
DIA
PIN1
2
.113(2.87)
.103(2.62)
.16(4.06)
.14(3.56)
.037(0.94)
.027(0.68)
.205(5.20)
.195(4.95)
.594(15.1)
.587(14.9)
.56(14.22)
.53(13.46)
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RATINGS AND CHARACTERISTIC CURVES (SRA2020 THRU SRA2060)
FIG.3- MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
PEAK
FOR
W
ARD
SURGE
CURRENT
.
(A)
1
2
5
10
20
100
50
50
100
150
250
200
300
350
NUMBER OF CYCLES AT 60Hz
8.3ms Single Half Sine Wave
JEDEC Method
FIG.4- TYPICAL FORWARD CHARACTERISTICS
INST
ANT
ANEOUS
FOR
W
ARD
CURRENT
.
(A)
.1
.2
.3
.4
.5
.6
.7
.8
.9
1.0
0.1
1.0
10
50
FORWARD VOLTAGE. (V)
Tj=25 C
Pulse Width=300 s
1% Duty Cycle
o
FIG.2- TYPICAL REVERSE CHARACTERISTICS
INST
ANT
ANEOUS
REVERSE
CURRENT
.
(mA)
20
40
60
80
100
120
.001
.01
.10
1.0
10
PERCENT OF RATED PEAK REVERSE VOLTAGE. (%)
Tj=100 C
0
Tj=25 C
0
Tj=75 C
0
FIG.1- MAXIMUM FORWARD CURRENT DERATING
CURVE
A
VERAGE
FOR
W
ARD
CURRENT
.
(A)
0
50
100
150
0
4
8
12
16
20
CASE TEMPERATURE. ( C)
o
SRA2020-40
SRA2050-60
SRA2020-40
SRA2050-60
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