Document
BL GALAXY ELECTRICAL
FAST RECOVERY RECTIFIER
FR251---FR257
VOLTAGE RANGE: 50 --- 1000 V CURRENT: 2.5 A
FEATURES Low cost Diffused junction Low leakage Low forward voltage drop High current capability Easily cleaned with Freon,Alcohol,Isopropanol and similar solvents The plastic material carries U/L recognition 94V-0
MECHANICAL DATA Case:JEDEC R--3,molded plastic Terminals: Axial lead ,solderable per MIL- STD-202,Method 208 Polarity: Color band denotes cathode Weight:0.021 unces,0.58 grams Mounting position: Any
R-3
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 ambient temperature unless otherwise specified.
Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate by 20%.
FR 251
Maximum recurrent peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forw ard rectified current
9.5mm lead length,
@TA=75
Peak forw ard surge current
VRRM VRMS VDC
IF(AV)
50 35 50
8.3ms single half-sine-w ave
superimposed on rated load @TJ=125 Maximum instantaneous forw ard voltage
@ 2.5 A
IFSM VF
Maximum reverse current
@TA=25
at rated DC blocking voltage @TA=100
IR
Maximum reverse recovery time (Note1)
trr
Typical junction capacitance (Note2)
CJ
Typical thermal resistance
(Note3)
RθJA
Operating junction temperature range
TJ
Storage temperature range
TSTG
NOTE:1. Measured with IF=0.5A, IR=1A, Irr=0.25A.
2. Measured at 1.0MHz and applied rev erse v oltage of 4.0V DC.
3. Thermal resistance f rom junction to ambient.
FR 252
FR 253
FR 254
FR 255
FR 256
FR 257
UNITS
100 200 400 600 800 1000 V 70 140 280 420 560 700 V 100 200 400 600 800 1000 V
2.5 A
150.0
1.3 5.0 100.0 150 250 22 35 - 55---- +150 - 55---- + 150
A V
A 500 ns
pF
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Document Number 0261005
BLGALAXY ELECTRICAL
1.
RATINGSANDCHARACTERISTICCURVES
FIG.1 -- TYPICAL FORWARD DERATINGCURVE
FR251---FR257
FIG.2-- FORWARDSURGECURRENT
PEAK FORWARD SURGE CURRENT AMPERES
AVERAGE FORWARD CURRENT AMPERES
2.5
2.0
1.5
1.0
Single Phase
0.5
Half Wave 60HZ Resistive or
Inductive Load
0
0 2 5 50
75 100 125 150 175
150 125 100
75 50 25
0 12
TJ=125 8.3ms Single Half Sine-Wave
4 6 8 10 20
40 60 1 0 0
AMBIENTTEMPERATURE, FIG.3--TYPICAL JUNCTIONCAPACITANCE
NUMBEROF CYCLES AT60 Hz FIG.4 --TYPICAL FORWARDCHARACTERISTIC
INSTANTANEOUS FORWARD CURRENT AMPERES
JUNCTION CAPACITANCE,pF
100 60 40
20 10
4 TJ=25 f=1MHz
2
1 .1 .2
.4
1.0 2 4
10 20 40
100
100
10 TJ=25
Pulse Width=300µS 4
2
1.0
0.4
0.2
0.1 0.06 0.04
0.02 0.01
0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
REVERSE VOLTAGE,VOLTS
INSTANTANEOUS FORWARDVOLTAGE,VOLTS
FIG.5 -- REVERSERECOVERYTIME CHARACTERISTICANDTEST CIRCUIT DIAGRAM
50 10 N.1. N.1.
+0.5A
trr
(+) 50VDC (APPROX) (-)
D.U.T.
1 N.1.
OSCILLOSCOPE (NOTE 1)
(-)
PULSE GENERATOR
(NOTE2)
(+)
0 -0.25A
-1.0A
NOTES:1.RISETIME=7ns MAX. INPUTIMPEDANCE=1M .22pF 2.RISETIME=10ns MAX. SOURCEIMPEDANCE=5O
SETTIMEBASEFOR50/100 ns /cm
Document Number 0261005
BLGALAXY ELECTRICAL
1cm
www.galaxycn.com 2.
.