CHENG-YI SR850

SR820 thru SR860
SK820 thru SK860
MINIATURE SCHOTTKY BARRIER
RECTIFIER
CHENG- YI
ELECTRONIC
VOLTAGE RANGE
20 TO 80 Volts
CURRENT
8.0 Amperes
TO-220AC
FEATURES
Low switching noise
Low forward voltage drop
Low thermal resistance
High current capability
High surge capability
High reliability
MECHANICAL DATA
Case: TO-220A molded plastic
Epoxy: UL 94V-0 rate flame retardant
Lead: MIL-STD-202 method 208 guaranteed
Mounting position: Any
MAXIMUM RATINGS ( At TA=25 C unless otherwise noted)
0
Ratings
Symbol
SR820
SR830
SR835
SR840
SR845
SR850
SR860
UNITS
Symbol
SK820
SK830
SK835
SK840
SK845
SK850
SK860
UNITS
50
Maximum Recurrent Peak Reverse Voltage
VRRM
20
30
35
40
45
60
Volts
Maximum RMS Voltage
VRMS
14
21
25
28
32
35
42
Volts
Maximum DC Blocking Voltage
VDC
20
30
35
40
45
50
60
Volts
Maximum Average Forward Rectified Current
.375" (9.5mm) lead length
Peak Forward Surge Current, 8.3 ms single half
sine-wave superimposed on rated load (JEDEC method)
Typical Thermal Resistance (Note 1)
IO
8.0
Amps
IFSM
150
Amps
R
0
2.5
JC
C/W
Typical Junction Capacitance (Note 3)
CJ
700
450
Operating Temperature Range
TJ
-65 to +125
-65 to +150
Storage and Operating Temperature Range
TSTG
pF
0
C
0
-65 to +150
C
ELECTRICAL CHARACTERISTICS ( At TA=25 C unless otherwise noted)
0
Characteristics
Symbol
Maximum Instantaneous Forward Voltage at 8.0A DC
VF
0
Maximum Average Reverse Cruuent @TA=25 C
at Rated DC Blocking Voltage
@TA=1000C
SK820
IR
Notes : 1. Thermal Resistance Junction to Case.
2. Suffix "R" for Reverse Polarity
3. Measured at 1MHz and applied reserse voltage of 4.0 Volts.
SK830
Sk835
SK840
.65
SK845
SK850
.75
SK860
UNITS
Volts
1.0
mAmps
30
mAmps
SR820 thru SR860
SK820 thru SK860
MINIATURE SCHOTTKY BARRIER
RECTIFIER
CHENG- YI
ELECTRONIC
RATING AND CHARACTERISTICS CURVES
SR820 THRU SR860
SK820 THRU SK860
AVERAGE FORWARD CURRENT AMPERES
Fig.1 - TYPICAL FORWARD CURRENT DERATING CURVE
Fig.2 - TYPICAL REVERSE CHARACTERISTICS
10
10
0
TC=150C
50~
880
SK
K8
~S
4
8
SK
820
SK
6
INSTANTANEOUS REVERSE CURRENT, (mA)
8
40
2
0
0
50
100
150
LEAD TEMPERATURE, 0C
PEAK FORWARD SURGE CURRENT, (A)
Fig.3 - MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
2 5C
0
=
TC
75
0
=
TC
25
C
.01
SK820~SK840
SK850~SK880
8.3ms Single Half Sine Wave
JEDEC Method
150
C
.1
175
.001
20
40
60
80
100
120
125
PERCENT OF RATED PEAK
REVERSE VOLTAGE, (%)
100
75
50
Fig.4 - TYPICAL INSTANTANEOUS
FORWARD CHARACTERISTICS
25
1
10
100
INSTANTANEOUS FORWARD CURRENT, (A)
NUMBER OF CYCLES AT 60 Hz
Fig.5 - TYPICAL JUNCTION CAPACITANCE
JUNCTION CAPACITANCE, (pF)
0
=1
TC
1.0
4000
SK820~SK840
2000
1000
800
600
400
200
SK850~SK880
50
SK820~SK840
10
SK850~SK880
1.0
TJ=250C
Pulse Width-300 s
1% DUTY CYCLE
.1
.1
.2
.3
.4
.5
.6
.7
.8
.9
100
.1
1.0
10
REVERSE VOLTAGE(V)
100
INSTANTANEOUS FORWARD VOLTAGE, (V)
1.0