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BY251 ~ BY255
MEDIUM CURRENT PLASTIC RECTIFIER VOLTAGE
FEATURES
* Plastic package has Underwriters Laboratories Flammability Classification 94V-O * Void-free Plastic in DO-201AD package. * Exceeds environmental standards of MIL-S-19500/228 * Low leakage .
.375(9.5) .285(7.2) 1.0(25.4)MIN.
200 to 1300 Volts
CURRENT
3.0 Amperes
DO-201AD
Unit: inch(mm)
* High current capability.
.052(1.3) .048(1.2)
* In compliance with EU RoHS 2002/95/EC directives
MECHANICALDATA
* Case: Molded plastic, DO-201AD * Polarity: Color Band denotes cathode end * Mounting Position: Any * Weight: 0.0395 ounce, 1.122 grams * Terminals: Axial leads, solderable to MIL-STD-750,Method 2026
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25C ambient temperature unless otherwise specified. Resistive or inductive load, 60Hz.
PARAMETER Maximum Recurrent Peak Reverse Voltage Maximum RMS Voltage Maximum DC Blocking Voltage Maximum Average Forward Current .375"(9.5mm) lead length Peak Forward Surge Current : 8.3ms single half sine-wave superimposed on rated load(JEDEC method) Maximum Forward Voltage at 3.0A Maximum DC Reverse Current at TJ =25O C Rated DC Blocking Voltage TJ =100O C Typical Junction capacitance (Note 1) Typical Thermal Resistance(Note 2) Operating Junction and Storage Temperature Range
SYMBOL VR R M VR M S VD C IF (A V ) IF S M VF IR CJ RJ A TJ ,TS T G
BY251 200 140 200
BY252 400 280 400
1.0(25.4)MIN.
.210(5.3) .188(4.8)
BY253 600 420 600 3.0 100 1.1 5.0 1000 40 15 -55 to +150
BY254 800 560 800
BY255 1300 910 1300
UNITS V V V A A V A
pF
O
C/W
O
C
NOTES: 1. Measured at 1 MHz and applied reverse voltage of 4.0 volts. 2.Thermal resistance from junction to ambient. 3.Reverse Recovery Test Conditions:I F=0.5A , IR=1.0A ,Irr=0.25A
STAD-FEB.27.2009 1
PAGE . 1
BY251 ~ BY255
RATING AND CHARACTERISTIC CURVES
100
AVERAGE FORWARD RECTIFIED CURRENT AMPERES
3.0 2.5 2.0 1.5 1.0 0.5 0 0 50 100
O
INSTANTANEOUS FORWARD CURRENT, AMPERES
10
1.0
SINGLE PHASE HALF WAVE 60Hz RESISTIVE OR INDUCTIVE LOAD .375" (9.5mm) LEAD LENGTH
0.1
150
0 .01 0.5
0.7
0.9
1.1
1.3
1.5
1.7
AMBIENT TEMPERATURE, C
INSTANTANEOUS FORWARD VOLTAGE, VOLTS
FIG.1 FORWARD CURRENT DERATING CURVE
100
FIG.2 TYPICAL FORWARD CHARACTERISTICS
JUNCTION CAPACITANCE, pF
120
PEAK FORWARD SURGE CURRENT, AMPERES
100
80
10
60
40
20 0
1
2
6
10
20
40
60
100
?.1
1
10
100
NO. OF CYCLES AT 60Hz
REVERSE VOLTAGE, VOLTS
FIG.3 TYPICAL JUNCTION CAPACITANCE
INSTANTANEOUS REVERSE CURRENT , m A
Fig.4 MAXIMUM NON REPETITIVE PEAK SURGE CURRENT
1000
100
TJ = 125 C
o
10
TJ = 100 OC
1.0
TJ = 2 C 5
O
0.1
20
40
60
80
100
120
140
PERCENTAGE OF PEAK REVERSE VOLTAGE,%
Fig.5-TYPICAL REVERSE CHARACTERISTIC
STAD-FEB.27.2009 1
PAGE . 2

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