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

AXIAL SILASTIC GUARD JUNCTION STANDARD RECTIFIER
BY251 THRU BY255
VOLTAGE RANGE
CURRENT
200 to 1300 Volts
3.0 Ampere
FEATURES
• Low coat construction
• Low forward voltage drop
• Low reverse leakage
• High forward surge current capability
• High temperature soldering guaranteed:
260℃/10 secods/.375”(9.5mm)lead length at 5 lbs(2.3kg) tension
MECHANICAL DATA
• Case: Transfer molded plastic
• Epoxy: UL94V-O rate flame retardant
• Polarity: Color band denotes cathode end
• Lead: Plated axial lead, solderable per MIL-STD-202E method 208C
• Mounting position: Any
• Weight: 0.042 ounce, 1.19 grams
1.0(25.4)
MIN.
DO-27
.375(9.5)
.335(8.5)
1.0(25.4)
MIN.
.220(5.6)
.197(5.0)
DIA.
.052(1.3)
.048(1.2)
DIA.
Dimensions in inches and (millimeters)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
• Ratings at 25^OC ambient temperature unless otherwise specified
• Single Phase, half wave, 60Hz, resistive or inductive load
• For capacitive load derate current by 20%
SYMBOLS BY251
BY252
BY253
BY254
Maximum Repetitive Peak Reverse Voltage
V_RRM
200
400
600
800
Maximum RMS Voltage
V_RMS
140
280
420
560
Maximum DC Blocking Voltage
V_DC
200
400
600
800
Maximum Average Forward Rectified Current
0.375”(9.5mm) lead length at TA= 75℃
I_(AV)
3.0
Peak Forward Surge Current
8.3mS single half sine wave superimposed on
I_FSM
125
rated load (JEDEC method)
Maximum Instantaneous Forward Voltage @ 3.0A
V_F
1.1
Maximum DC Reverse Current at Rated
DC Blocking Voltage per element
TA = 25℃
TA = 100℃
I_R
5.0
50
Maximum Full Load Reverse Current, full cycle average
0.375”(9.5mm)lead length at TL=75℃
I_R(AV)
500
Typical Junction Capacitance (Note 1)
C_J
40
Typical Thermal Resistance (Note 2)
R_θJA
30
Operating Junction Temperature Range
T_J
-55 to +150
Storage Temperature Range
T_STG
-55 to +150
Notes:
1. Measured at 1.0MHz and Applied Reverse Voltage of 4.0V DC.
2. Thermal Resistance from junction to ambient at .375”(9.5mm) lead length, P.C.board mounted.
BY255
1300
910
1300
UNIT
Volts
Volts
Volts
Amps
Amps
Volts
µA
µA
pF
℃/W
℃
℃
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