FEATURES
Low c ost
Glass passivated junction
Low f orward voltage drop
High current c apabilit y
MECHANICA L DA TA
Case:JEDEC DO--15,molded plastic
T erminals: Axial lead , solderable per
MIL- STD-202,Method 208
P olar it y: C olor band denot es c athode
Weight: 0.014 ounces,0.39 grams
Mounting posit ion: Any
Ratings at 25 ambient temperature unless otherw ise specified.
Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate by 20%.
SF22
SF23 SF24
SF25
SF26 SF27 SF28
UNITS
Maximum recurrent peak reverse voltage VRRM
V
Maximum RMS voltage VRMS
V
Maximum DC blocking voltage VDC
V
Maximum averag e forward rectified current
9 .5mm l e ad le ng th, @TA=75
Peak forward su rg e current
8.3ms single half-sine-wave
superimposed on rated load @TJ=125
Maximum in stantaneous forward voltage
@ 2.0A VF V
Ma ximum reverse curre n t @TA=25
at rated DC blocking voltage @T A=125
Maximum reverse recovery time (Note1) trr
ns
Typica l j u n ction cap a cita n ce (No te 2 ) CJ pF
Typica l therma l resista n ce (No te 3) RθJA /W
Operating ju nction temperature range TJ
S torage temperature rang e TSTG
30
1.3 1.70.95
60
SF21G - - - SF28G
A
5.0
Easily cleaned with alcohol,Isopropanol
and similar solvents
IF(AV)
3. Therm al resist anc e from juncti on t o am bi ent.
A
50
IR
IFSM
N OTE: 1. Meas ured wi t h IF=0.5A, IR=1 A , Irr=0.25A.
2. Meas ur ed at 1.0MHZ and appl ied revers e vol t age of 4. 0V D C .
- 55 ----- + 175
- 55 ----- + 175
35
GLASS PASSIVATED RECTIFIERS
SF21
50 100 150 200 300 400 500 600
The plastic material carries U/L recognition 94V-0
VOLTAGE RANGE: 50 --- 600 V
CURRENT: 2.0 A
DO - 15
20
50.0
A
M AXIMUM RATIN G S AN D EL ECTRICAL CH ARAC T ERIST ICS
35 70 105 140 210 280 350 420
50 100 150 200 300 400 500 600
2.0
BL
Document Number 0269033 1.
GALAXY ELECTRICAL
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BLGALAXY ELECTRICAL
G G G G G G G G
Document Number 0269033 2.
AMPERES
AMPERES
AMPERES
FIG.2 -- TYPICAL FORWARD CHARACTERISTIC FIG.3 -- FORWARD DERATING CURVE z
FIG.4 -- TYPICAL JUNCTION CAPACITANCE FIG.5 -- PEAK FORWARD SURGE CURRENT
AMBIENT TEMPERATURE,
PEAK FORWARD SURGE CURREN
T
NUMBER OF CYCLES AT 60Hz REVERSE VOLTAGE,VOLTS
SF21G - - - SF28G
FIG. 1 -- TES T CI RCUIT DIAG RAM AND REV ERS E R ECO V ERY TI M E CHARACT ERIS TI C
AVERAGE FORWARD CURRENT
SET TIME BA SE FOR 10 ns/cm
JUNCTION CAPACITANCE,pF
NOTES:1.RISE TIM E = 7ns MAX.INPUT IMPEDANCE = 1M .22pF.
JJJJJ2.RISE TIME =10ns MAX.SOURCE IMPEDANCE=50 .
RATINGS AND CHARACTERISTIC CURVES
INSTANTANEOUS FORWARD VOLTAGE, VOLTS
INSTANTANEOUS FORWARD CURRENT
trr
-1 .0 A
-0 .2 5 A
0
+0.5A
1cm
TJ=25
1
2
4
6
10
20
40
60
100
200
0.10.2 0.4 1 2 4 10 40 10020
SF25G - SF28G
SF21G - SF24G
PULSE
GENERATOR
(NOTE2)
D.U.T.
1
NONIN-
DUCTIVE
50
N1. 10
N1.
OSCILLOSCOPE
(NOTE 1)
(+)
25VDC
(approx)
(-)
0.5
1.0
0 25 50 75 100 125 150
Single Phase
Half Wave 60HZ
Resistive or
Inductive Load
0.375"(9.5mm )Lead Length
0 175
1.5
2.0
2.5
3.0
0
20
60
110100
30
5
8.3ms Single Half
Sine-Wave
50
50
40
10
70
.6.4 .8 1.0 1.2 1.4 1.6 1.8
0.01
0.1
1
10
100
Tj=25 C
Pulse Width=300 s
1% Duty Cycle
o
SF21G~SF24G
SF25G~SF26G
SF27G~SF28G
BLGALAXY ELECTRICAL
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