- 186 -
SRAS2035 THRU SRAS2045
20.0 AMPS. Schottky Barrier Rectifiers
Voltage Range
35 to 45 Volts
Current
20.0 Amperes
Features
For surface mounted application
Low forward voltage drop
High current capability
High
reliability
High surge current capabilit
y
Mechanical Data
Cases:
D
2
PAK molded plastic
Epoxy: UL 94V-0 rate flame retardant
Terminals: Lead solderable per
MIL-STD-202, Method 208 guaranteed
Polarity:
As
marked
High temperature soldering guaranteed:
260
O
C/10 seconds at terminals
Weight: 1.70 grams
D
2
PAK
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 SRAS2035 SRAS2040 SRAS2045
Units
Maximum Recurrent Peak Reverse Voltage
V
RRM
35 40 45
V
Maximum RMS Voltage
V
RMS
25 28 32
V
Maximum DC Blocking Voltage
V
DC
35 40 45
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
350
A
Maximum Instantaneous Forward Voltage
@ 20.0A
@ 40.0A
V
F
0.57
0.73
V
Maximum D.C. Reverse Current @ Tj=25
at Rated DC Blocking Voltage @ Tj=125
I
R
2.7
105
mA
mA
Typical Thermal Resistance (Note 1)
R
JC
1.5
/W
Typical Junction Capacitance (Note 2)
pF 900
pF
Operating Junction Temperature Range
T
J
-65
to
+150
Storage Temperature Range
T
STG
-65
to
+150
Notes: 1. Thermal Resistance from Junction to Case Per Leg,
2. Measured at 1MHz and Applied Reverse Voltage of 5.0V D.C.
"
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RATINGS AND CHARACTERISTIC CURVES (SRAS2035 THRU SRAS2045)
FIG.3- TYPICAL REVERSE CHARACTERISTICS
PER LEG
INST
ANT
ANEOUS
REVERSE
CURRENT
.
(mA)
0
20
40
60
80
100
120
140
.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- FORWARD CURRENT DERATING CURVE
A
VERAGE
FOR
W
ARD
CURRENT
.
(A)
0
50
100
150
0
4.0
8.0
12.0
16.0
20.0
CASE TEMPERATURE. ( C)
o
FIG.4- TYPICAL FORWARD CHARACTERISTICS
PER LEG
INST
ANT
ANEOUS
FOR
W
ARD
CURRENT
.
(A)
.2
.3
.4
.5
.6
.7
.8
.9
0.1
1.0
10
100
INSTANTANEOUS FORWARD VOLTAGE. (V)
Tj=25 C
PULSE WIDTH-300 S
1% DUTY CYCLE
0
FIG.5- TYPICAL JUNCTION CAPACITANCE PER LEG
JUNCTION
CAP
ACIT
ANCE.(pF)
0.1
1
10
100
100
1,000
5,000
REVERSE VOLTAGE. (V)
Tj=25 C
f=1.0MHz
Vsig=50mVp-p
0
FIG.2- MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT PER BRIDGE ELEMENT
PEAK
FOR
W
ARD
SURGE
CURRENT
.
(A)
1
2
3
4
1.5
5 6
9
8
7
10
25
20
15
30
100
60
40
80
20
100
300
400
200
NUMBER OF CYCLES AT 60Hz
60
80
40
2.5
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