Vishay Telefunken BYT78, BYT77 Datasheet
Fast Silicon Mesa Rectifiers
g
Features
D
Glass passivated junction
D
Hermetically sealed package
D
Low reverse current
D
Soft recovery characteristics
D
Controlled avalanche characteristics
BYT77.BYT78
Vishay Telefunken
Applications
Fast ”soft recovery” rectifier
Absolute Maximum Ratings
Tj = 25_C
Parameter Test Conditions Type Symbol Value Unit
Reverse voltage BYT77 V
BYT78 V
Peak forward surge current tp=10ms, half sinewave I
Average forward current
Junction and storage
T
amb
x45°
C
Tj=T
temperature range
Non repetitive reverse
avalanche energy
I
=400mA,
(BR)R
inductive load L=120mH
Maximum Thermal Resistance
Tj = 25_C
Parameter Test Conditions Symbol Value Unit
Junction ambient l=10mm, TL=constant R
on PC board with spacing 37.5mm R
thJA
thJA
FSM
I
FAV
E
R
R
stg
R
94 9588
800 V
1000 V
100 A
3 A
–65...+175
15 mJ
25 K/W
70 K/W
°
C
Electrical Characteristics
Tj = 25_C
Parameter Test Conditions Type Symbol Min Typ Max Unit
Forward voltage IF=3A V
Reverse current V
Reverse recovery time IF=0.5A, IR=1A, iR=0.25A t
Document Number 86034
Rev. 3, 07-Dec-99
R
VR, Tj=150°C I
F
I
R
R
rr
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1.0 1.1 V
1 5
60 150
m
m
300 ns
A
A
1 (4)
BYT77.BYT78
Vishay Telefunken
Characteristics (Tj = 25_C unless otherwise specified)
40
30
20
ll
10
TL=constant
20
30
thJA
R – Therm. Resist. Junction / Ambient ( K/W )
94 9466
0
0 5 10 15 25
l – Lead Length ( mm )
Figure 1. Max. Thermal Resistance vs. Lead Length
2.0
1.6
1.2
240
200
°
160
120
80
R
j
40
T – Junction Temperature ( C )
thJA
0
0 200 400 600 800
94 9467
Reverse / Repetitive Peak Reverse Voltage ( V )
Figure 4. Junction Temperature vs.
Reverse/Repetitive Peak Reverse Voltage
1000
Scattering Limit
100
m
10
=70K/W
V
RRM
V
R
1000
0.8
fv20kHz
0.4
FAV
I – Average Forward Current ( A )
R
=70K/W
thJA
0
0
PCB
40 80 120 160
T
– Ambient Temperature ( °C )94 9468
amb
Figure 2. Max. Average Forward Current vs.
Ambient Temperature
4
3
2
1
fv20kHz
R
FAV
I – Average Forward Current ( A )
=25K/W
thJA
L=10mm
0
0
40 80 120 160
T
– Ambient Temperature ( °C )94 9471
amb
Figure 3. Max. Average Forward Current vs.
Ambient Temperature
200
200
1
R
I – Reverse Current ( A )
VR=V
RRM
200
94 9469
0.1
0 40 80 120 160
Tj – Junction Temperature ( °C )
Figure 5. Reverse Current vs. Junction Temperature
100
Tj=175°C
10
1
F
0.1
I – Forward Current ( A )
Tj=25°C
0.01
3.0
94 9472
0 0.6 1.2 1.8 2.4
VF – Forward Voltage ( V )
Figure 6. Max. Forward Current vs. Forward Voltage
www.vishay.de • FaxBack +1-408-970-5600
2 (4)
Document Number 86034
Rev. 3, 07-Dec-99
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