EIC BY253, BY255, BY251, BY254, BY252 Datasheet
BY251 - BY255
Rating at 25
°
C ambient temperature unless otherwise specified.
Single phase, half wave, 60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
DO - 201AD
Dimensions in inches and ( millimeters )
PRV : 200 - 1300 Volts
Io : 3.0 Amperes
SILICON RECTIFIER DIODES
1.00 (25.4)
MIN.
FEATURES :
0.21 (5.33)
0.19 (4.83)
* High current capability
* High surge current capability
* High reliability
0.375 (9.53)
0.285 (7.24)
* Low reverse current
* Low forward voltage drop
1.00 (25.4)
MIN.
MECHANICAL DATA :
0.052 (1.32)
0.048 (1.22)
* Case : DO-201AD Molded plastic
* Epoxy : UL94V-O rate flame retardant
* Lead : Axial lead solderable per MIL-STD-202,
Method 208 guaranteed
* Polarity : Color band denotes cathode end
* Mounting position : Any
* Weight : 0.929 grams
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
RATING
Maximum Repetitive Peak Reverse Voltage VRRM 200 400 600 800 1300 V
Maximum RMS Voltage VRMS 140 280 420 560 910 V
Maximum DC Blocking Voltage VDC 200 400 600 800 1300 V
Maximum Average Forward Current
0.375"(9.5mm) Lead Length Ta = 50 °C
Peak Forward Surge Current
8.3ms Single half sine wave Superimposed
on rated load (JEDEC Method)
Maximum Forward Voltage at IF = 3.0 Amps. VF 1.1 V
Maximum DC Reverse Current Ta = 25 °C
at rated DC Blocking Voltage Ta = 100 °C
Typical Junction Capacitance (Note1) CJ 50 pF
Typical Thermal Resistance (Note2)
Junction Temperature Range TJ - 65 to + 175
Storage Temperature Range TSTG - 65 to + 175
SYMBOL BY251 BY252 BY253 BY254 BY255 UNIT
IF 3.0 A
IFSM 100 A
IR 20
IR(H) 50
RθJA
18
µA
µA
°C/W
°C
°C
Notes :
(1) Measured at 1.0 MHz and applied reverse voltage of 4.0V
(2) Thermal resistance from Junction to Ambient at 0.375" (9.5mm) Lead Lengths, P.C. Board Mounted.
Page 1 of 2 Rev. 01 : Mar 23, 2002
DC
RATING AND CHARACTERISTIC CURVES ( BY251 - BY255 )
FIG. 5 - TYPICAL REVERSE CHARACTERISTICS
TJ = 25 °C
JUNCTION CAPACITANCE,
FIG.1 - DERATING CURVE FOR OUTPUT FIG.2 - MAXIMUM NON-REPETITIVE PEAK
RECTIFIED CURRENT FORWARD SURGE CURRENT
3.0
2.4
100
80
Ta = 25 °C
1.8
1.2
0.6
CURRENT, AMPERES
AVERAGE FORWARD OUTPUT
0
0 25 50 75 100 125 150 175 1 2 4 6 10 20 40 60 100
AMBIENT TEMPERATURE, ( °C)
60
40
20
CURRENT, AMPERES
PEAK FORWARD SURGE
NON-REPETITIVE
0
NUMBER OF CYCLES AT 60Hz
FIG.3 - TYPICAL FORWARD CHARACTERISTICS FIG 4 . - TYPICAL JUNCTION CAPACITANCE
100
1.0
10
Pulse Width = 300 µs
2% Duty Cycle
TJ = 25 °C
(pF)
100
50
10
5
1
2 4
1
10 20 40
REVERSE VOLTAGE, VOLTS
0.1
100
FORWARD CURRENT, AMPERES
0.01
0.4 0.6
0 0.2
0.8 1.0 1.2 1.4 1.6 1.8 2.0
FORWARD VOLTAGE, VOLTS
10
Ta = 100 °C
1.0
0.1
Ta = 25 °C
0.01
REVERSE CURRENT, MICROAMPERES
20 40 60
80
100
120
140
PERCENT OF RATED REVERSE
VOLTAGE, (%)
Page 2 of 2 Rev. 01 : Mar 23, 2003
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