Vishay Telefunken BY458, BY448 Datasheet
Silicon Mesa Rectifiers
g
Features
D
Glass passivated junction
D
Hermetically sealed package
Applications
BY448.BY458
Vishay Telefunken
High voltage rectifier
Efficiency diode in horizontal deflection circuits
Absolute Maximum Ratings
Tj = 25_C
Parameters Test Conditions Type Symbol Value Unit
Reverse voltage BY448 V
BY458 V
Peak forward surge current tp=10ms,
half sinewave
Average forward current I
Junction temperature T
Storage temperature range T
Maximum Thermal Resistance
Tj = 25_C
Parameter Test Conditions Symbol Value Unit
Junction ambient on PC board with spacing 25mm R
I
FSM
FAV
thJA
stg
94 9539
R
R
j
1500 V
1200 V
30 A
2 A
140
–55...+150
100 K/W
°
C
°
C
Electrical Characteristics
Tj = 25_C
Parameter Test Conditions Type Symbol Min Typ Max Unit
Forward voltage IF=3A V
Reverse current VR=V
Total reverse recovery time IF=1A, diF/dt=0.05A/ms t
Document Number 86006
Rev. 2, 24-Jun-98
VR=V
RSM
, Tj=140°C I
RSM
F
I
R
R
rr
www.vishay.de • FaxBack +1-408-970-5600
1.6 V
3
140
20
m
A
m
A
m
s
1 (3)
BY448.BY458
Vishay Telefunken
Characteristics (Tj = 25_C unless otherwise specified)
120
100
80
60
40
20
0
thJA
R – Therm. Resist. Junction / Ambient ( K/W )
ll
TL=constant
0
51015 25
l – Lead Length ( mm )94 9101
20
30
Figure 1. Typ. Thermal Resistance vs. Lead Length
1000
100
m
10
Scattering Limit
100
Tj=25°C
10
Scattering Limit
F
I – Forward Current ( A )
94 9157
1
0.1
0.01
0 0.6 1.2 1.8 2.4
VF – Forward Voltage ( V )
Figure 3. Forward Current vs. Forward Voltage
3.0
1
R
I – Reverse Current ( A )
VR=V
RRM
94 9082
0.1
0 40 80 120 160
T
– Junction Temperature ( °C )
j
Figure 2. Reverse Current vs. Junction Temperature
Dimensions in mm
Sintered Glass Case
SOD 57
Weight max. 0.5g
26 min. 26 min.
Cathode Identification
200
4.2 max.
∅ 3.6 max.
technical drawings
according to DIN
specifications
94 9538
∅ 0.82 max.
www.vishay.de • FaxBack +1-408-970-5600
2 (3)
Document Number 86006
Rev. 2, 24-Jun-98
Loading...