BUF420A ST Microelectronics, BUF420A Datasheet - Page 3

• Manufacturer Part Number: BUF420A
• Description: HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTOR
• Manufacturer: ST Microelectronics

ELECTRICAL CHARACTERISTICS (continued)
Turn-on Switching Test Circuit.
Turn-off Switching Test Circuit.
1) F ast electronic switch
2) Non-inductive Resistor
1) F ast electronic switch
2) Non-inductive Resistor
3) F ast recovery rectifier
Symb ol
V
V
CEW
CEW
t
t
t
t
t
t
t
t
t
s
f
c
s
f
c
s
f
c
INDUCTIVE LOAD
Storage Time
Fall T ime
Cross Over T ime
Maximum Collector
Emitter Voltage
without Snubber
INDUCTIVE LOAD
Storage Time
Fall T ime
Cross Over T ime
INDUCTIVE LOAD
Storage Time
Fall T ime
Cross Over T ime
Maximum Collector
Emitter Voltage
without Snubber
Parameter
I
V
V
L = 0.25 mH
I
V
V
L = 0.25 mH
I
V
V
L = 0.12 mH
I
V
V
L = 0.12 mH
I
V
L = 0.08 mH
T
C
C
C
C
CW off
BB
c la mp
BB
c la mp
BB
c la mp
BB
c la mp
BB
j
=125
= 10 A
= 10 A
= 20 A
= 20 A
= 0
= 0
= -5 V
= - 5 V
= - 5 V
= 30 A
= 400 V
= 400 V
= 400 V
= 400 V
o
C
Test Cond ition s
R
R
V
I
T
V
I
T
B1
B1
I
I
T
I
V
R
V
R
V
R
j
j
B1
B1
B1
BB
BB
CC
CC
j
=100
=125
CC
BB
CC
BB
CC
BB
=125
= 1 A
= 1 A
= 4 A
= 4 A
= 6 A
= 0.15
= 0.15
= 50 V
= 50 V
=0.6
= 0.6
= 0.6
= 50 V
= 50 V
= 50 V
o
o
o
C
C
C
Min.
500
400
Typ .
0.06
0.12
2.2
Max.
0.15
0.25
0.12
3.5
0.3
3
BUF420A
Un it
V
V
s
s
s
s
s
s
s
s
s
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