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FAST RECOVER RECTIFIER
FR251 THRU FR257
FEATURES
* * * * *
VOLTAGE RANGE CURRENT
50 to 1000 Volts 2 .5Ampere
Low coat construction Fast switching for high efficency. Low reverse leakage High forward surge current capability High temperature soldering guaranteed: 260/10 secods/.375"(9.5mm)lead length at 5 lbs(2.3kg) tension
R-3
.042(1.1) DIA. .038(0.96) 1.0(25.4) MIN.
.160(4.1) .138(3.5) .160(4.1) .138(3.5) DIA.
MECHANICAL DATA
* * * * * *
Case: Transfer molded plastic Epoxy: UL94V-O rate flame retardant Polarity: Color band denotes cathode end Lead: Plated axial lead, solderable per MIL-STD-202E method 208C Mounting position: Any Weight: 0.042ounce, 1.19 grams
1.0(25.4) MIN.
Dimensions in inches and (millimeters)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
* * *
Ratings at 25OC ambient temperature unless otherwise specified Single Phase, half wave, 60Hz, resistive or inductive load For capacitive load derate current by 20%
SYMBOLS
Maximum Repetitive Peak Reverse Voltage Maximum RMS Voltage Maximum DC Blocking Voltage Maximum Average Forward Rectified Current 0.375"(9.5mm) lead length at T A= 75 Peak Forward Surge Current 8.3mS single half sine wave superimposed on rated load (JEDEC method) Maximum Instantaneous Forward Voltage @ 2.5A Maximum DC Reverse Current at Rated DC Blocking Voltage TA = 25 TA = 100
VRRM VRMS VDC I(AV) IFSM VF IR trr CJ RJA TJ TSTG
FR 251 50 35 50
FR 252 100 70 100
FR 253 200 140 200
FR 254 400 280 400 2.5 100 1.3 5.0 500
FR 255 600 420 600
FR 256 800 560 800
FR 257 1000 700 1000
UNITS
Volts Volts Volts Amp Amps Volts A
Maximum Reverse Recovery Time (Note 3) T J=25 Typical Junction Capacitance (Note 1) Typical Thermal Resistance (Note 2) Operating Junction Temperature Range Storage Temperature Range
150 60 30 (-55 to +150) (-55 to +150)
250
500
ns pF
/W
Notes: 1.Measured at 1.0MHz and Applied Reverse Voltage of 4.0Volits. 2 Thermal Resistance from junction to Ambient at .375"(9.5mm)lead length, P.C.board mounted. 3.Reverse Recovery Test Conditions:If=0.5mA,Ir=1.0mA,Irr=0.25A
Web Site: WWW.PS-PFS.COM
FAST RECOVER RECTIFIER
FR251 THRU FR257
VOLTAGE RANGE CURRENT
50 to 1000 Volts 2 .5Ampere
RATING AND CHRACTERISTIC CURVES FR251 THRU FR257
FIG.2-MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT
200 8.3ms Single Half Sine-Wave (JEDEC Method) Tj=Tjmax
FIG.1-TYPICAL FORWARD CURRENT DERATING CURVE
3.0
AVERAGE FORWARD CURRENT,
PEAK FORWARD SURGE
100 80
2.0
CURRENT, (A)
60
(A)
40
1.0
Single Phase Half Wave 60Hz Resistive or Inductive Load 0.375"(9.5mm)Lead Length
20
0 0 25 50 75 100 125 150 175
10 1
2
4
6
8
10
20
40
60 80 100
AMBIENT TEMPERATURE, ( C)
NUMBER OF CYCLES AT 60 Hz
FIG.3-TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS INSTANTANEOUS FORWARD CURRENT,
20
FIG.4-TYPICAL REVERSE CHARACTERISTICS
10
10
INSTANTANEOUS REVERSE CURRENT,
Tj =100 C 1.0
(A)
1.0
Tj =25 C Pulse Width=300us 1% Duty Cycle
0.1
(uA)
0.1
Tj =25 C 0.01 0 20 40 60 80 100 120 140
0.01 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
INSTANTANEOUS FORWARD VOLTAGE,(V)
PERCENT OF RATED PEAK REVERSE VOLTAGE,(%)
FIG.5-TYPICAL JUNCTION CAPACITANCE
FIG.6-TEST CIRCUIT DIAGRAM AND REVERSE REXOVERY TIME CHARACTERISTIC
100 80 60
+0.5A
JUNCTION CAPACITANCE,(pF)
40
50 NONINDUCTIVE
10 NONINDUCTIVE
20
(+) 25 Vdc approx (-)
(-)
0 0.25A
D.U.T
10 8 6 4 TJ=25 C F=1MHz 2
Vsig=50mVp-p
PULSE GENERATIOR (NOTE 2)
1 NON INDUCTIVE
OSCILLOSCOPE (NOTE 1) -1.0A
NOTE: 1.Rise Time =7ns max.Input Impedance=1megohm.22pF 2.Rise time=10ns max.Source Impedance=50 ohms
SET TIME BASE FOR 50 /100NS /cm
1 0.1 1.0 10 100
REVERSE VOLTAGE,(V)
Web Site: WWW.PS-PFS.COM

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