DS24002 Rev. D-3
1 of 2
SF21-SF24
Features
Low Leakage Current
Low Forward Voltage Drop
High Current Capability
Super-fast Switching Speed < 35ns
Plastic Material - UL Flammability Rating 94V-0
Mechanical Data
Case: DO-15, Molded Plastic
Terminals: Plated Axial Leads, Solderable per
MIL-STD-202, Method 208
Polarity: Cathode Band
Approx. Weight: 0.4 grams
Single phase, halfwave, 60Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
Characteristic
Symbol
SF21
SF22
SF23
SF24
Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
V
RRM
V
RWM
V
R
50
100
150
200
V
Maximum RMS Voltage
V
R(RMS)
35
70
105
140
V
Average Rectified Output Current
@ T
L
=55C
I
O
2.0
A
Non-Repetitive Peak Forward Surge Current 8.3 ms single half
sine-wave superimposed on rated load (JEDEC method)
I
FSM
50
A
Forward Voltage
@ I
F
=2.0
V
F
0.975
V
Reverse Current at Rated DC Blocking Voltage @ T
A
= 25C
@ T
A
=150C
I
R
5
50
A
Maximum Reverse Recovery Time (Note 2)
t
RR
35
ns
Typical Junction Capacitance (Note 3)
C
j
70
pF
Operating and Storage Temperature Range
T
j
, T
STG
-65 to + 175
C
Notes: 1. Valid provided that leads are kept at ambient temperature at a distance of 9.5mm from the case.
2. Reverse Recovery Test Conditions: I
F
=0.5 A, I
R
=1.0 A, I
RR
=0.25A
3. Measured at 1.0MHz and applied reverse voltage of 4.0V.
A
A
B
C
D
SF21 - SF24
2.0A SUPER-FAST RECOVERY RECTIFIER
DO-15
Dim
Min
Max
A
25.40
--
B
5.50
7.62
C
0.686
0.889
D
2.60
3.60
All Dimensions in mm
Maximum Ratings and Electrical Characteristics
@ T
A
= 25C unless otherwise specified
INACTIVE, NOT
FOR NEW DESIGN,
USE SF20AG - SG20JG
DS24002 Rev. D-3
2 of 2
SF21-SF24
0.01
0.1
1.0
10
100
0
20
40
60
80
100
120 140
I
,
INST
ANT
ANEOUS
REVERSE
CURRENT
(A)
R
PERCENT OF RATED PEAK REVERSE VOLTAGE (%)
Fig. 2, Typical Reverse Characteristics
T = 150C
J
T = 100C
J
T = 25C
J
0.001
0.01
0.1
10
1.0
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
I
,
INST
ANT
ANEOUS
FOR
W
A
RD
CURRENT
(AMPERES)
F
V , INSTANTANEOUS FORWARD VOLTAGE (VOLTS)
Fig. 3, Typical Instantaneous Fwd Characteristics
F
T = 25C
J
Pulse Width
= 300s
1% Duty Cycle
20
25
30
35
40
45
50
55
1
10
100
I
,
PEAK
FOR
W
A
RD
SURGE
C
URRENT
(
AMPERES)
FSM
NUMBER OF CYCLES AT 60 Hz
Fig. 4, Max Non-Repetitive Peak Fwd Surge Current
0
20
40
60
80
100
120
140
0.1
1
10
100
1000
C
,
JUNCTION
CAP
ACIT
ANCE
(pF)
J
V , REVERSE VOLTAGE (VOLTS)
Fig. 5, Typical Junction Capacitance
R
T = 25C
J
0
1.0
2.0
0
25
50
75
100
125
150 175
I
,
A
VERAGE
RECTIFIED
CURRENT
(AMPERES
)
O
T , AMBIENT TEMPERATURE (C)
Fig. 1, Typical Fwd Current Derating Curve
A
Single Phase
Half Wave 60 Hz
Resistive or
Inductive Load
INACTIVE, NOT
FOR NEW DESIGN,
USE SF20AG - SG20JG
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