BY251 thru BY255
MMEEDDIIUUMM CCUURRRREENNTT PPLLAASSTTIICC RREECCTTIIFFIIEERR
CCHHEENNGG--YYII
ELECTRONIC
RATING AND CHARACTERISTICS CURVES
BY251 THRU BY255
Fig.2 - MAXIMUM PEAK FORWARD
SURGE CURRENT
200
8.3ms Single Half Sine Wave
JEDEC Method
Fig.1 - FORWARD CURRENT DERATING CURVE
100
8
NON-REPETIVE
1=.301"(.79min)
1=.25"(6.3mm)
0
T =150C
J
50
7
TJ=Both Leads to
Heat Sink with
6
Lengths (f) AS shown
1=.50"(12.7mm)
5
REPETIVE
4
3
2
10
1
5
10
50
100
T
A
=Ambient Temperature
NUMBER OF CYCLES AT 60 Hz
0.275(9.5mm) Lead
1
0
Lengths P.C. Board mounting
Resistive or inductive Load
40
60
80
100
120
140
160
180
0
TEMPERATURE,
C
Fig.4 - TYPICAL JUNCTION CAPACITANCE
100
50
0
T =25C
J
Fig.3 - TYPICAL INSTANTANEOUS
f=1MHz
10
FORWARD CHARACTERISTICS
Visg=50m Vp-p
100
5
1
5
10
50
100
30
REVERSE VOLTAGE(V)
10
Fig.5 - TYPICAL REVERSE CHARACTERISTICS
3.0
10
0
T =25C
J
1.0
Pulse Width-300
2% DUTY CYCLE
s
0
=100C
T
A
0.3
1.0
0.1
0.1
.03
0
=25C
T
A
.01
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
.01
INSTANTANEOUS FORWARD VOLTAGE, (V)
0
20
40
60
80
100 120
140
PERCENT OF RATED PEAK
REVERSE VOLTAGE, (%)
CHENG-YI [ CHENG-YI ELECTRONIC CO., LTD. ]
