Formosa MS
Axial Leaded Super Fast Rectifiers
SF21 THRU SF28
2.0A Axial Leaded Super
Fast Rectifiers-50-600V
Package outline
DO-15
Features
• Axial lead type devices for through hole design
• High current capability.
• Superfast recovery time for switching mode application.
• High surge current capability.
• Silicon rubber coating chip junction.
• Lead-free parts meet RoHS requirments.
• Suffix "-H" indicates Halogen free parts, ex. SF21-H.
1.0(25.4)
MIN.
.140(3.6)
.104(2.6)
DIA.
.300(7.6)
.230(5.8)
Mechanical data
• Epoxy : UL94-V0 rated flame retardant
• Case : Molded plastic, DO-15
• Lead : Axial leads, solderable per MIL-STD-202,
.023(.6)
DIA.
Method 208 guranteed
• Polarity: Color band denotes cathode end
• Mounting Position : Any
• Weight : Approximated 0.40 gram
Dimensions in inches and (millimeters)
Maximum ratings and Electrical Characteristics (AT
PARAMETER
T A=25 oC unless otherwise noted)
CONDITIONS
O
Forward rectified current
Ambient temperature = 55 C
Forward surge current
8.3ms single half sine-wave (JEDEC methode)
V R = V RRM T J = 25 OC
Reverse current
f=1MHz and applied 4V DC reverse voltage
Storage temperature
UNIT
IO
2.0
A
I FSM
60
A
V RMS*2
(V)
*3
VR
(V)
SF21
50
35
50
SF22
100
70
100
SF23
150
105
150
SF24
200
140
200
SF25
300
210
300
SF26
400
280
400
SF27
500
350
500
SF28
600
420
600
*4
VF
(V)
MIN.
TYP.
5.0
Operating
temperature
T J, ( OC)
*5
t rr
(ns)
µA
150
CJ
T STG
*1
V RRM
(V)
SYMBOLS
MAX.
Symbol
IR
V R = V RRM T J = 100 OC
Diode junction capacitance
1.0(25.4)
MIN.
.034(.9)
pF
60
+175
-65
O
C
*1 Repetitive peak reverse voltage
*2 RMS voltage
0.95
*3 Continuous reverse voltage
35
-55 to +125
1.25
*4 Maximum forward voltage@I F=2.0A
*5 Maximum Reverse recovery time, note 1
1.70
Note 1. Reverse recovery time test condition, I F =0.5A, I R =1.0A, I RR =0.25A
http://www.formosams.com/
TEL:886-2-22696661
FAX:886-2-22696141
Page 1
Document ID
Issued Date
Revised Date
DS-222407
2008/02/10
2010/05/10
Revision
C
Page.
3
Rating and characteristic curves (SF21 THRU SF28)
FIG.2-TYPICAL FORWARD CURRENT
DERATING CURVE
FIG.1- TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC
trr
10W
NONINDUCTIVE
( )
25Vdc
(approx.)
D.U.T.
PULSE
GENERATOR
(NOTE 2)
( )
1W
NONINDUCTIVE
|
|
|
|
|
|
|
|
+0.5A
(+)
AVERAGE FORWARD CURRENT,(A)
50W
NONINDUCTIVE
0
-0.25A
(+)
OSCILLISCOPE
(NOTE 1)
NOTES: 1. Rise Time= 7ns max., Input Impedance= 1 megohm.22pF.
-1.0A
2. Rise Time= 10ns max., Source Impedance= 50 ohms.
1cm
2.4
2.0
1.6
Single Phase
1.2
Half Wave 60Hz
Resistive Or Inductive Load
0.8
0.375"(9.5mm) Lead Length
0.4
0
SET TIME BASE FOR
0
25
50
75
100
125
150
175
AMBIENT TEMPERATURE,(°C)
50 / 10ns / cm
FIG.4-TYPICAL REVERSE
CHARACTERISTICS
CHARACTERISTICS
REVERSE LEAKAGE CURRENT, (uA)
INSTANTANEOUS FORWARD CURRENT,(A)
FIG.3-TYPICAL FORWARD
FORWARD VOLTAGE,(V)
PERCENT OF RATED PEAK REVERSE VOLTAGE,(%)
FIG.6-TYPICAL JUNCTION CAPACITANCE
175
JUNCTION CAPACITANCE,(pF)
PEAK FORWARD SURGE CURRENT,(A)
FIG.5-MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
150
125
100
75
50
25
0
.01
.1
.5
1
5
10
50
100
REVERSE VOLTAGE,(V)
NUMBER OF CYCLES AT 60Hz
http://www.formosams.com/
TEL:886-2-22696661
FAX:886-2-22696141
.05
Page 2
Document ID
Issued Date
Revised Date
DS-222407
2008/02/10
2010/05/10
Revision
C
Page.
3
Formosa MS
Axial Leaded Super Fast Rectifiers
SF21 THRU SF28
Pinning information
Pin
Pin1
Pin2
cathode
anode
Simplified outline
1
Symbol
2
1
2
Marking
Type number
SF21
SF22
SF23
SF24
SF25
SF26
SF27
SF28
http://www.formosams.com/
TEL:886-2-22696661
FAX:886-2-22696141
Marking code
SF21
SF22
SF23
SF24
SF25
SF26
SF27
SF28
Page 3
Document ID
Issued Date
Revised Date
DS-222407
2008/02/10
2010/05/10
Revision
C
Page.
3
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