English
Language : 

BY251 Datasheet, PDF (1/2 Pages) Pan Jit International Inc. – MEDIUM CURRENT PLASTIC RECTIFIER(VOLTAGE - 200 to 1300 Volts CURRENT - 3.0 Amperes)
BY251 thru BY255
General Purpose Plastic Rectifiers
Reverse Voltage 200 to 1300 Volts Forward Current 3.0 Amperes
Features
‹ Low forward voltage drop
‹ High current capability
‹ High reliability
‹ High surge current capability
‹ TJ is 150oC (Max.) and TSTG is 175oC (Max.) with PI glue
Mechanical Data
‹ Cases: Molded plastic
‹ Epoxy: UL 94V-O rate flame retardant
‹ Lead: Axial leads, solderable per MIL-STD-202, Method 208
guaranteed
‹ Polarity: Color band denotes cathode end
‹ High temperature soldering guaranteed:
250oC/10 seconds .375" (9.5mm) lead
lengths at 5 lbs., (2.3kg) tension
‹ Weight: 0.042 ounce, 1.2 grams
Maximum Ratings and Electrical Characteristics
Ratings at 25oC ambient temperature unless otherwise specified.
Single phase, half wave, 60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%
Parameter
Symbols BY251 BY252 BY253 BY254 BY255 Units
Maximum repetitive peak reverse voltage
VRRM
200
400
600
800
Maximum RMS voltage
VRMS
140
280
420
560
Maximum DC blocking voltage
Maximum average forward rectified current
0.375" (9.5mm) lead length @TA=50oC
Peak forward surge current, 8.3 ms single
half sine-wave superimposed on rated load
(JEDEC Method)
VDC
200
400
600
800
I(AV)
3.0
IFSM
100.0
Maximum instantaneous forward voltage @ 3.0A
VF
1.1
Maximum DC reverse current
at rated DC blocking voltage
@TA=25oC
@TA=100oC
IR
5.0
100
Maximum full load reverse current full cycle average,
.375" (9.5mm) lead length @TL=75oC
IR(AV)
30
Typical junction capacitance (Note 1)
CJ
60
Typical thermal resistance (Note 2)
RθJA
18
Operating junction temperature range
TJ
-55 to +125
Storage temperature range
TSTG
Notes: 1. Measured at 1 MHz and Applied Reverse Voltage of 4.0 V D.C.
2. Thermal Resistance from Junction to Ambient .375” (9.5mm) Lead Length
-55 to +150
1300
910
1000
Volts
Volts
Volts
Amp
Amps
Volts
uA
uA
pF
oC/W
oC
oC
67
 ▷