RECTRON
SEMICONDUCTOR
TECHNICAL SPECIFICATION
SR820
THRU
SR860
SCHOTTKY BARRIER RECTIFIER
VOLTAGE RANGE 20 to 60 Volts CURRENT 8.0 Amperes
FEATURES
*
*
*
*
*
*
Low switching noise
Low forward voltage drop
Low thermal resistance
High current capability
High surge capabitity
High reliability
TO-220A
.413 (10.5)
.374 (9.5)
.187 (4.7)
( )
(3.9) .148 3.8
.153
.146 (3.7)
.270 (6.9)
.230 (5.8)
.610 (15.5)
.583 (14.8)
.04MAX.
(1.0)
.157
(4.0)
.051
(1.3)
.043 (1.1)
.035 (0.9)
.102 (2.6)
.091 (2.3)
.583 (14.8)
.531 (13.5)
.053 (1.3)
.047 (1.2)
MECHANICAL DATA
*
*
*
*
*
Case: To-220A molded plastic
Epoxy: Device has UL flammability classification 94V-O
Lead: MIL-STD-202E method 208C guaranteed
Mounting position: Any
Weight: 2.24 grams
.108
(2.75)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 C ambient temperature unless otherwise specified.
Single phase, half wave, 60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
o
.022 (0.56)
.014 (0.36)
.126
(3.2)
Dimensions in inches and (millimeters)
MAXIMUM RATINGS
(At T
A
= 25
o
C unless otherwise noted)
RATINGS
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current
at Derating Case Temperature
Peak Forward Surge Current 8.3 ms single half sine-wave
superimposed on rated load (JEDEC method)
Typical Thermal Resistance (Note 1)
Typical Junction Capacitance (Note 3)
Operating Temperature Range
Storage Temperature Range
SYMBOL
V
RRM
V
RMS
V
DC
I
O
I
FSM
R
θ
JC
C
J
T
J
T
STG
700
-65 to + 125
-65 to + 150
SR820
20
14
20
SR830
30
21
30
SR835
35
25
35
SR840
40
28
40
8.0
150
2.5
450
-65 to + 150
SR845
45
32
45
SR850
50
35
50
SR860
60
42
60
UNITS
Volts
Volts
Volts
Amps
Amps
0
C/ W
pF
0
0
C
C
ELECTRICAL CHARACTERISTICS
(At T
A
= 25 C unless otherwise noted)
CHARACTERISTICS
Maximum Instantaneous Forward Voltage at 8.0A DC
Maximum Average Reverse Current
at Rated DC Blocking Voltage
@T
C
= 25 C
@T
C
= 100
o
C
o
o
SYMBOL
V
F
I
R
SR820
SR830
SR835
.65
SR840
5.0
50
SR845
SR850
.75
SR860
UNITS
Volts
mAmps
mAmps
2001-4
NOTES : 1. Thermal Resistance Junction to Case.
2. Suffix “R” for Reverse Polarity.
2. Measured at 1 MHz and applied reverse voltage of 4.0 volts.
RATING AND CHARACTERISTIC CURVES ( SR820 THRU SR860 )
AVERAGE FORWARD CURRENT, (A)
FIG. 1 - TYPICAL FORWARD CURRENT DERATING CURVE
10
8
SR
FIG. 2 - TYPICAL REVERSE CHARACTERISTICS
10
INSTANTANEOUS REVERSE CURRENT, (mA)
TC = 150
SR
850
6
4
2
0
0
Single Phase Half Wave
60Hz Inductive or
Resistive Load
~S
50
100
CASE TEMPERATURE, (
820
~S
45
R8
1.0
TC = 125
R8
60
TC = 75
.1
TC = 25
150
)
PEAK FORWARD SURGE CURRENT, (A)
FIG. 3 - MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT
.01
155
8.3ms Single Half Sine-Wave
(JEDED Method)
150
145
140
135
130
125
1
2
5
10
20
50
NUMBER OF CYCLES AT 60Hz
100
.001
0
20
40
60
80
SR820~SR845
SR850~SR860
100
120
140
PERCENT OF RATED PEAK
REVERSE VOLTAGE, (%)
FIG. 4 - TYPICAL JUNCTION CAPACITANCE
4000
JUNCTION CAPACITANCE, (pF)
INSTANTANEOUS FORWARD CURRENT, (A)
FIG. 5 - TYPICAL INSTANTANEOUS
FORWARD CHARACTERISTICS
50
2000
SR820~SR845
SR820~SR845
10
1000
800
600
400
SR850~SR860
SR850~SR860
1.0
200
100
.1
0.1
.1
TJ = 25
Pulse Width=300uS
1% Duty Cycle
.4
1.0
4
10
REVERSE VOLTAGE, ( V )
40
80 100
.2
.3
.4
.5
.6
.7
.8
.9 1.0
INSTANTANEOUS FORWARD VOLTAGE, (V)
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