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HIGH EFFICIENCY GLASS PASSIVATED RECTIFIER
HER251G THRU HER258G
FEATURES
* * * * * *
VOLTAGE RANGE CURRENT
50 to 1000 Volts 2.5 Ampere
R-3
Glass passivated chip junction Low power loss, high efficiency Low leakage High speed switching High surge capacity High temperature soldering guaranteed 260/10 seconds,0.375(9.5mm) lead length
MECHANICAL DATA
* * * * * *
Case: Transfer molded plastic Epoxy: UL94V-0 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 gram
Dimensions in inches and (millimeters)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 ambient temperature unless otherwise specified Single Phase, half wave, 60Hz, resistive or inductive load For capacitive load derate current by 20% HER HER SYMBOLS 251G 252G Maximum Repetitive Peak Reverse Voltage VRRM 50 100 Maximum RMS Voltage VRMS 35 70 Maximum DC Blocking Voltage VDC 50 100
Maximum Average Forward Rectified Current at TA =50 Peak Forward Surge Current 8.3ms single half sine-wave superimposed on rated load (JEDEC method) Maximum Instantaneous Forward Voltage at 2.5A Maximum DC Reverse Current at rated TA = 25 DC Blocking Voltage at TA = 125 Maximum Full Load Reverse 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 Junction Capacitance (NOTE 2) Typical Thermal Resistance (NOTE 1) Operating Junction Temperature Range Storage Temperature Range * * *
HER 253G 200 140 200
HER 254G 300 210 300
HER 255G 400 280 400
HER 256G 600 420 600
HER 257G 800 560 800
HER 258G 1000 700 1000
UNIT Volts Volts Volts Amps Amps
I(AV) IFSM VF IR IR(AV) trr CJ RJA TJ TSTG 50 30 1.0
2.5 100 1.3 5.0 250 100 75 35 35 (-55 to +150) (-55 to +150) 1.5 1.7
Volts A A nS pF
/W
Notes: 1. Thermal Resistance from Junction to ambient with 0.375(9.5mm) lead length, PCB mounted. 2. Measured at 1.0MHz and applied reverse voltage of 4.0V
E-mail: sales@cnmic.com
Web Site: www.cnmic.com
HIGH EFFICIENCY GLASS PASSIVATED RECTIFIER
HER251G THRU HER258G
VOLTAGE RANGE CURRENT
50 to 1000 Volts 2.5 Ampere
RATING AND CHRACTERISTIC CURVES HER251G THRU HER258G
FIG.1-TYPICAL FORWARD CURRENT DERATING CURVE AVERAGE FORWARD CURRENT,
3.0
FIG.2-MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT PEAK FORWARD SURGE
150
CURRENT, (A)
8.3ms Single Half Sine-Wave (JEDEC Method) T= T jmax 100
2.0
(A)
1.0
Single Phase Half Wave 60Hz Resistive or Inductive Load 0.375(9.5mm) Lead Length
50
1 Cycle 0 0 25 50 75 100 125 150 175 0 1 2 4 6 8 10 20 40 60 100
AMBIENT TEMPERATURE, ( C) FIG.3-TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS
10
NUMBER OF CYCLES AT 60 Hz
FIG.4-TYPICAL REVERSE CHARACTERISTICS INSTANTANEOUS REVERSE CURRENT,
100
INSTANTANEOUS FORWARD CURRENT,
1.0
0 0 /2 5 0 /1
00V
60 0V 80 0V -1 00 0V
30
0/4 0
0V
(A)
10
(A)
0.1
TJ =125 C
0.01
1.0 TJ=25 C
TJ =25 C Pulse Width=300us 1% Duty Cycle
0.001 0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0.1 0 20 40 60 80 100 120 140
INSTANTANEOUS FORWARD VOLTAGE,(V)
PERCENT OF RATED PEAK REVERSE VOLTAGE,(%)
FIG.5-TYPICAL JUNCTION CAPACITANCE
100
JUNCTION CAPACITANCE,(pF)
HE
R2
51
G-
HE
F1G.6-TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC
R2 5 5G
Trr
HE
R2
56
G-
50 10 NONINDUCTIVE NONINDUCTIVE (-) (+) 25 Vdc (approx.) (-) D.U.T. PULSE GENERATIOR (NOTE 2) (+) OSCILLOSCOPE (NOTE 1)
+0.5A
HE
R2
58G
10
0 -0.25A
T J =25 C f=1MHz Vsig=50mVp-p
1 NON INDUCTIVE
-1.0A
1cm
1 0.1 1.0 10 100
REVERSE VOLTAGE,(V)
NOTES : 1.Rise Time=7ns mas. Input Impedance= 1 magohm. 22pF 2.Rise time=10ns max. Source Impedance= 50 ohms
SET TIME BASE FOR 50/100ns/cm
E-mail: sales@cnmic.com
Web Site: www.cnmic.com

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