BY251 Datasheet, PDF (1/2 Pages) Pan Jit International Inc. – MEDIUM CURRENT PLASTIC RECTIFIER(VOLTAGE - 200 to 1300 Volts CURRENT - 3.0 Amperes)

VOLTAGE RANGE: 200 - 1300V
CURRENT: 3.0 A
Features
! ^{The plastic package carries Underwriters}
Laboratory
! ^{Flammability Classification 94V-0}
! ^{Construction utilizes void-free}
molded plastic technique
! ^{Low reverse leakage}
! ^{High forward surge current capability}
! High temperature soldering guaranteed:
250 C/10 seconds,0.375”(9.5mm) lead length,
5 lbs. (2.3kg) tension
Mechanical Data
! Case: DO-201AD, Molded Plastic
! Terminals: Axial Leads, Solderable per
MIL-STD-202 Method 208
! _{Polarity: Color Band Denotes Cathode}
! Approx. Weight: 1.1 grams
! Mounting Position: Any
BY251- BY255
AXIAL LEADED SILICON RECTIFIER DIODES
A
B
A
C
D
DO-201AD
Dim
Min
Max
A
25.40
¾
B
7.20
9.50
C
1.20
1.30
D
4.80
5.30
All Dimensions in mm
Maximum Ratings and Electrical Characteristics T_A = 25°C unless otherwise specified
Single phase, half wave, 60Hz, resistive or inductive load. For capacitive load, derate current by 20%.
Characteristic
Symbol BY251 BY252 BY253 BY254
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forward rectified current
0.375”(9.5mm) lead length at TA=75 C
Peak forward surge current
8.3ms single half sine-wave superimposed on
rated load (JEDEC Method)
Maximum instantaneous forward voltage at 3.0A
Maximum DC reverse current TA=25 C
at rated DC blocking voltage TA=100 C
Typical junction capacitance (NOTE 1)
Typical thermal resistance (NOTE 2)
Operating junction and storage temperature range
VRRM
200
400
600
800
VRMS
140
280
420
560
VDC
200
400
600
800
I(AV)
3.0
IFSM
VF
IR
CJ
RθJA
TJ,TSTG
150
1.1
10.0
500
30.0
20.0
-65 to +175
Note:1.Measured at 1MHz and applied reverse voltage of 4.0V D.C.
2.Thermal resistance from junction to ambient at 0.375”(9.5mm)lead length,P.C.B. mounted
BY255
1300
910
1300
Unit
VOLTS
VOLTS
VOLTS
Amps
Amps
Volts
uA
pF
°_C/W
°_C
1 of 2
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