Pure tin plated, lead free, solderable per MIL-STD-202, Method 208 guaranteed.
Colour band denotes cathode end.
260°C/10 seconds/0.375 inch, (9.5mm) lead lengths at 5lbs., (2.3kg) tension.
1.2 grams.
Page <1>
12/07/08 V1.1
BY25x Series
Maximum Ratings and Electrical Characteristics
Rating at 25°C ambient temperature unless otherwise specified.
Single phase, half wave, 60Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
Type Number
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified
Current 0.375 (9.5mm) Lead Length
at T
A
= 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 at T
A
= 25°C
at Rated DC Blocking Voltage at T
A
= 125°C
Maximum Full Load Reverse Current, Full
Cycle Average 0.375 inch (9.5mm) Lead
Length at T
L
= 75°C
Typical Junction Capacitance (Note 1)
Typical Thermal Resistance (Note 2)
Operating Temperature Range
Storage Temperature Range
Symbol
V
RRM
V
RMS
V
DC
I
BY251
200
140
200
BY252
400
280
400
BY253
600
420
600
BY254
800
560
800
BY255
1300
910
1300
V
Units
(AV)
3.0
A
I
FSM
V
F
I
R
150
1.0
5.0
100
30
V
µA
µA
µΑ
pF
40
°C/W
HT
IR
C
j
R
θJA
T
J
-65 to +150
T
STG
°C
Note: 1. Measured at 1MHz and Applied Reverse Voltage of 4.0V dc.
2. Mount on Cu-Pad Size 16mm x 16mm on PCB.
Page <2>
12/07/08 V1.1
BY25x Series
Ratings and Characteristic Curves (BY251 thru BY255)
Maximum Forward Current Derating Curve
Instantaneous Reverse Current (µA)
Average Forward Current Amperes
Typical Reverse Characteristics
Ambient Temperature (°C)
Maximum Non-Repetitive Forward Surge Current
Per Leg
Peak Forward Surge Current (A)
Junction Capacitance (pF)
Percent of Rated Peak Reverse Voltage (%)
Typical Junction Capacitance
Number of Cycles at 60Hz
Typical Forward Characteristics
Reverse Voltage (V)
Instantaneous Forward Current (A)
Forward Voltage (V)
Page <3>
12/07/08 V1.1
BY25x Series
Part Number Table
Description
Diode, Standard, 3A, 200V
Diode, Standard, 3A, 400V
Diode, Standard, 3A, 600V
Diode, Standard, 3A, 800V
Diode, Standard, 3A, 1300V
Part Number
BY251
BY252
BY253
BY254
BY255
Page <4>
14/7/08 V1.1
BY25x Series
Notes:
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