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BU941 Datasheet(PDF) 2 Page - Unisonic Technologies

Part No. BU941
Description  NPN POWER DARLINGTON HIGH VOLTAGE IGNITION COIL DRIVER
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Maker  UTC [Unisonic Technologies]
Homepage  http://www.utc-ic.com
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UTCBU941
NPN EPITAXIAL SILICON TRANSISTOR
UTC UNISONIC TECHNOLOGIES CO. LTD
2
QW-R203-025,A
ELECTRICAL CHARACTERISTICS (Tc=25°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
Collector-Emitter Sustaining Voltage
VCEO(sus)*
Ic=100mA, Vclamp=400V, L=10mH
(see fig. 1)
400
V
Collector Cut-off Current
ICES
VCE=500V, VBE=0
VCE=500V, VBE=0, Tj=125
°C
100
0.5
μ
A
mA
Collector Cut-off Current
ICEO
VCE=450V, IB=0
VCE=450V, IB=0, Tj=125
°C
100
0.5
μ
A
mA
Emitter Cut-off Current
IEBO
VEB=5V, Ic=0
20
mA
Collector-Emitter Saturation Voltage
VCE(sat)*
IC=8A, IB=100mA
IC=10A, IB=250mA
IC=12A, IB=300mA
1.6
1.8
2
V
Base-Emitter Saturation Voltage
VBE(sat)*
IC=8A, IB=100mA
IC=10A, IB=250mA
IC=12A, IB=300mA
2.2
2.5
2.7
V
DC Current Gain
HFE*
VCE=10V, Ic=5A,
300
Diode Forward Voltage
VF
IF=10A
2.5
V
Functional Test
Vcc=24V, Vclamp=400V, L=7mH
(see Functional Test Circuit)
10
A
Fall Time
tf
15
Storage Time
ts
Vcc=12V, Vclamp=300V, VBE=0,
RBE=47Ω, L=7mH, Ic=7A, IB=70mA
(see fig.2)
0.5
μ
s
*Pulsed: Pulse duration=300μs, duty cycle 1.5%
Vcc=16V
0V
20ms
t1
B
R1
R2
Vclamp
T.U.T.
C
E
Fig. 1 Sustaining Voltage Test Circuit
12V
VD
Vin
47Ω
T.U.T.
Vclamp
7mH
Fig. 2 Switching Time Test Circuit




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