SF21 thru SF28
Axial Lead Super Fast Rectifiers
P b
Lead(Pb)-Free
REVERSE VOLTAGE
50 TO 600 VOLTS
CURRENT
2.0 AMPERE
Features:
* Low forward voltage drop.
* High current capability.
* High reliability.
* High surge current capability.
Mechanical Data:
* Case: Molded plastic.
* Epoxy: UL 94V-0 rate ame retardant.
* Lead: Axial leads, solderable per MIL-STD-202,
method 208 guranteed.
* Polarity: Color band denotes cathode end.
* Mounting position: Any.
* Weight: 0.40 grams.
DO-15
DO-15 Outline Dimensions
Axial Device (Through-Hole)
A
B
C
Unit:mm
D
Dim
DO-15
Min
25.4
A
Max
-
Min
5.8
B
Max
7.6
Min
25.4
C
E
Max
-
Min
0.7
D
Max
0.9
Min
2.6
E
Max
3.6
WEITRON
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1/3
Rev.A 04-Aug-09
SF21 thru SF28
Maximum Ratings and Electrical Characteristics
Rating 25°C Ambient Temperature Unless Otherwise Speci ed. Single Phase Half Wave, 60Hz, Recti ed or Inductive
Load. For Capacitive Load, Derate Current By 20%.
Characteristics
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current
.375”(9.5mm) Lead Length @T
A
= 55°C
Peak Forward Surge Current, 8.3 ms Single Half
Sine-Wave Superimposed on Rated Load (JEDEC)
Symbol
SF21 SF22 SF23 SF24 SF25 SF26 SF27 SF28
Unit
V
RRM
V
RMS
V
DC
I
F(AV)
I
FSM
V
F
I
R
C
J
Trr
T
J
T
STG
50
35
50
100
70
100
150
105
150
200
140
200
300
210
300
2.0
50
400
280
400
500
350
500
600
420
600
V
V
V
A
A
Maximum Instantaneous Forward Voltage
At 2.0A
Maximum DC Reverse Current @T
A
= 25°C
At Rated DC BlockingVoltage @T
A
= 100°C
Typical Junction Capacitance (Note 1)
Maximum Reverse Recovery Time (Note 2)
Operating Temperature Range
Storage Temperature Range
0.97
1.25
5.0
50
60
35
+150
-65 to +150
1.50
V
A
pF
nS
°C
°C
NOTES: 1. Measured At 1MHz and Applied Reverse Voltage of 4.0 V.D.C
2. Reverse Recovery Time Test Condition: I
F
=0.5A, I
R
= 1.0A, I
RR
= 0.25A
WEITRON
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2/3
Rev.A 04-Aug-09
SF21 thru SF28
RATINGAND CHARACTERISTIC CURVES
+0.5A
|
|
|
|
|
|
|
|
AVERAGE FORWARD CURRENT (A)
50
NONINDUCTIVE
10
NONINDUCTIVE
trr
2.4
2.0
1.6
1.2
0.8
0.4
0
0
25
50
75
100
125
150
175
Single Phase
Half Wave 60Hz
Resistive Or Inductive Load
0.375"(9.5mm) Lead Length
(+)
25Vdc
(approx.)
(
)
D.U.T.
1
NON-
INDUCTIVE
(
)
PULSE
GENERATOR
(NOTE 2)
0
-0.25A
OSCILLISCOPE
(NOTE 1)
(+)
NOTES: 1. Rise Time= 7ns max., Input Impedance= 1 megohm.22pF.
2. Rise Time= 10ns max., Source Impedance= 50 ohms.
-1.0A
1cm
FIG.1 TEST CIRCUIT DIAGRAM AND
REVERSE RECOVERY
SET TIME BASE FOR
50 / 10ns / cm
AMBIENT TEMPERATURE,( C)
TIME CHARACTERISTIC
FIG.2-TYPICAL FORWARD CURRENT
DERATING CURVE
INSTANTANEOUS FORWARD CURRENT (A)
50
50
10
3.0
SF
21~
SF
24
REVERSE LEAKAGE CURRENT (A)
10
3.0
1.0
SF
25
~S
F2
6
1.0
Tj=100°C
SF
27
~S
F2
8
0.1
Tj=25 C
Pulse Width 300us
1% Duty Cycle
Tj=25°C
0.1
0.01
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0.01
0
20
40
60
80
100
120
140
FORWARD VOLTAGE,(V)
PERCENT OF RATED PEAK REVERSE VOLTAGE (%)
FIG.3 TYPICAL FORWARD CHARACTERISTICS
PEAK FORWARD SURGECURRENT (A)
100
80
60
Tj=25°C
FIG.4 TYPICAL REVERSE CHARACTERISTICS
175
JUNCTION CAPACITANCE (pF)
150
125
100
75
50
25
0
0.01
0.05
0.1
0.5
1
5
10
50
100
8.3ms Single Half
Sine Wave
JEDEC method
40
20
0
1
5
10
50
100
NUMBER OF CYCLES AT 60Hz
REVERSE VOLTAGE,(V)
FIG.5 MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
FIG.6 TYPICAL JUNCTION CAPACITANCE
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WEITRON
3/3
Rev.A 04-Aug-09
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