VISHAY BYG21 User Manual
Fast Silicon Mesa SMD Rectifier
g
Features
D
Glass passivated junction
D
Low reverse current
D
Soft recovery characteristics
D
Fast reverse recovery time
D
Good switching characteristics
D
Wave and reflow solderable
Applications
Surface mounting
Fast rectifier
Freewheeling diodes in SMPS and converters
Snubber diodes
BYG21
Vishay Telefunken
15 811
Absolute Maximum Ratings
Tj = 25_C
Parameter Test Conditions Type Symbol Value Unit
Reverse voltage BYG21K VR=V
=Repetitive peak reverse voltage
Peak forward surge current tp=10ms,
half sinewave
Average forward current I
Junction and storage
temperature range
Pulse energy in avalanche mode,
non repetitive
(inductive load switch off)
I
=1A, Tj=25°C E
(BR)R
BYG21M VR=V
I
FSM
FAV
Tj=T
RRM
RRM
stg
R
800 V
1000 V
30 A
1.5 A
–55...+150
20 mJ
Maximum Thermal Resistance
Tj = 25_C
Parameter Test Conditions Symbol Value Unit
Junction lead TL=const. R
Junction ambient mounted on epoxy–glass hard tissue R
mounted on epoxy–glass hard tissue, 50mm2 35mm Cu R
mounted on Al–oxid–ceramic (Al2O3), 50mm2 35mm Cu R
thJL
thJA
thJA
thJA
25 K/W
150 K/W
125 K/W
100 K/W
°
C
Document Number 86010
Rev. 3, 24-Jun-98
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1 (5)
BYG21
g
Vishay Telefunken
Electrical Characteristics
Tj = 25_C
Parameter Test Conditions Type Symbol Min Typ Max Unit
Forward voltage IF=1A V
IF=1.5A V
Reverse current VR=V
VR=V
RRM
, Tj=100°C I
RRM
Reverse recovery time IF=0.5A, IR=1A, iR=0.25A t
Characteristics (Tj = 25_C unless otherwise specified)
F
F
I
R
R
rr
1.5 V
1.6 V
1
m
10
m
120 ns
A
A
100
10
m
1
VR=V
R
I – Reverse Current ( A )
94 9347
0.1
0.01
0 40 80 120 160
Tj – Junction Temperature ( °C )
RRM
200
Figure 1. Typ. Reverse Current vs. Junction Temperature
2.0
1.6
R
=25K/W
thJA
1.2
0.8
100K/W
125K/W
0.4
FAV
I – Average Forward Current ( A )
0
150K/W
0
40 80 120 160
T
– Ambient Temperature ( °C )94 9345
amb
200
100
10
1
25°C
F
0.1
I – Forward Current ( A )
0.01
01 2 3
VF – Forward Voltage ( V )94 9348
75°C
Tj=125°C
4
Figure 3. Typ. Forward Current vs. Forward Voltage
600
T
=125°C
amb
100°C
75°C
50°C
25°C
1.0
rr
t – Reverse Recovery Time ( ns )
94 9349
500
400
300
200
100
IR=0.5A, iR=0.125A
0
0 0.2 0.4 0.6 0.8
IF – Forward Current ( A )
Figure 2. Max. Average Forward Current vs.
Ambient Temperature
www.vishay.de • FaxBack +1-408-970-5600
2 (5)
Figure 4. Max. Reverse Recovery Time vs.
Forward Current
Document Number 86010
Rev. 3, 24-Jun-98
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