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HIGH EFFICIENCY RECTIFIER
HER251 THRU HER257
FEATURES
* * * * *
VOLTAGE RANGE CURRENT
50 to 1000 Volts 2.5Ampere
R-3
.042(1.1) DIA. .038(0.96) 1.0(25.4) MIN.
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
.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: 0.020ounce, 0.56 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= 50 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 = 125
VRRM VRMS VDC I(AV) IFSM VF IR IR(AV) trr CJ RJA TJ TSTG
HER 251 50 35 50
HER 252 100 70 100
HER 253 200 140 200
HER 254 300 210 300 2.5
HER 255 400 280 400
HER 256 600 420 600
HER 257 800 560 800
HER UNITS 258 1000 Volts 700 Volts 1000 Volts Amp Amps
100 1.0 1.3 5.0 250 100 50 30 35 (-55 to +150) (-55 to +150) 75 35 1.5 1.7
Volts A A ns
PF /W
Maximum Full Load Recovery Current,full cycle average 0.375"(9.5mm)lead length at TL=55 Maximum Reverse Recovery Time Test conditions IF=0.5A,IR=1.0A,IRR=0.25A Typical Thermal Resistance (NOTE 2) Typical Thermal Resistance(NOTE 1) Operating Junction Temperature Range Storage Temperature Range
Notes: 1 Thermal resistance from junction to ambient with .375"(9.5mm)lead length, PCB. mounted. . 2. Measured at 1.0 MHz and applied reverse of 4.0 V
Web Site: WWW.PS-PFS.COM
HIGH EFFICIENCY RECTIFIER
HER251 THRU HER257
VOLTAGE RANGE CURRENT
50 to 1000 Volts 2.5Ampere
RATING AND CHRACTERISTIC CURVES HER251 THRU HER258
FIG.2-MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT
FIG.1-TYPICAL FORWARD CURRENT DERATING CURVE
3.0
AVERAGE FORWARD CURRENT,
150
PEAK FORWARD SURGE
2.0
8.3ms Single Half Sine-Wave (JEDEC Method) Tj=Tjmax
CURRENT, (A)
100
(A)
1.0
Single Phase Half Wave 60Hz Resistive or Inductive Load 0.375"(9.5mm)Lead Length
50
1 Cycle
0 1 2
0 0 25 50 75 100 125 150 175
4
6
8
10
20
40
60
100
AMBIENT TEMPERATURE, ( C)
NUMBER OF CYCLES AT 60 Hz
FIG.3-TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS FIG.4-TYPICAL REVERSE
100
CHARACTERISTICS
100
INSTANTANEOUS FORWARD CURRENT,
10
INSTANTANEOUS REVERSE CURRENT,
50 /1 00 /2 00 V
0V
40
0/
60
0V
0V
10 00 V
10
30
80
1.0
(UA)
(A)
Tj =125 C
1.0
Tj =25 C
Tj =25 C Pulse Width=300us 1% Duty Cycle
0.01 0.4
0.1 0 20 40 60 80 100 120 140
0.6
0.8
1.0
1.2
1.4
1.6
1.8
PERCENT OF RATED PEAK REVERSE VOLTAGE,(%)
INSTANTANEOUS FORWARD VOLTAGE,(V)
FIG.5-TYPICAL JUNCTION CAPACITANCE
100
JUNCTION CAPACITANCE,(pF)
H ER
FIG.6-TEST CIRCUIT DIAGRAM AND REVERSE REXOVERY TIME CHARACTERISTIC
25 1H ER 25 5
+0.5A 50 NONINDUCTIVE 10 NONINDUCTIVE
Trr
HE R
10
256
-H E
R25
8
(+) 25 Vdc approx (-)
(-)
0 0.25A
D.U.T
PULSE GENERATIOR (NOTE 2)
1 NON INDUCTIVE
OSCILLOSCOPE (NOTE 1) -1.0A
1cm
TJ=25 C F=1MHz
Vsig=50mVp-p
1 0.1 1.0 10 100
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
REVERSE VOLTAGE,(V)
Web Site: WWW.PS-PFS.COM

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