BU941 pdf

UNISONIC TECHNOLOGIES CO., LTD
BU941
NPN SILICON TRANSISTOR
NPN POWER DARLINGTON
HIGH VOLTAGE IGNITION
COIL DRIVER

FEATURES
* NPN Darlington
* Integrated antiparallel collector-emitter diode

APPLICATIONS
* High ruggedness electric ignitions

INTERNAL SCHEMATIC DIAGRAM
C
(2)
B (1)
(3)
E

ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
BU941L-T3P-T
BU941G-T3P-T
BU941L-TA3-T
BU941G-TA3-T
BU941L-TQ2-T
BU941G-TQ2-T
BU941L-TQ2-R
BU941G-TQ2-R
Note: Pin assignment: E: Emitter
B: Base

Package
TO-3P
TO-220
TO-263
TO-263
C: Collector
Pin Assignment
1
2
3
B
C
E
B
C
E
B
C
E
B
C
E
Packing
Tube
Tube
Tube
Tape Reel
MARKING
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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
NPN SILICON TRANSISTOR
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Collector-Emitter Voltage
Collector-Emitter Voltage
Emitter-Base Voltage
Collector Current
Collector Peak Current
Base Current
Base Peak Current
RATINGS
UNIT
500
V
400
V
5
V
15
A
30
A
1
A
5
W
TO-3P
155
W
Total Power Dissipation (Tc=25C) TO-220
PD
150
W
TO-263
65
W
Junction Temperature
TJ
+175
C
Storage Temperature
TSTG
-65 ~ +175
C
Note Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.

SYMBOL
VCES
VCEO
VEBO
IC
ICM
IB
IBM
ELECTRICAL CHARACTERISTICS (Tc=25C, unless otherwise specified)
PARAMETER
Collector-Emitter Sustaining
Voltage
SYMBOL
TEST CONDITIONS
IC=1mA, VCLAMP=400V, L=10mH
VCEO(SUS)*
(see Fig. 1)
VCE=500V, VBE=0
Collector Cut-Off Current
ICES
VCE=500V, VBE=0, TJ=125C
VCE=450V, IB=0
Collector Cut-Off Current
ICEO
VCE=450V, IB=0, TJ=125C
Emitter Cut-off Current
IEBO
VEB=5V, IC=0
IC=8A, IB=100mA
Collector-Emitter Saturation
VCE(SAT)* IC=10A, IB=250mA
Voltage
IC=12A, IB=300mA
IC=8A, IB=100mA
Base-Emitter Saturation Voltage
VBE(SAT)* IC=10A, IB=250mA
IC=12A, IB=300mA
DC Current Gain
hFE*
VCE=10V, IC=5A
Diode Forward Voltage
VF
IF=10A
VCC=24V, VCLAMP=400V, L=7mH
Functional Test
(see Functional Test Circuit)
VCC=12V, VCLAMP=300V, VBE=0,
Fall Time
tF
RBE=47Ω, L=7mH, IC=7A, IB=70mA
Storage Time
tS
(see Fig.2)
* Pulsed: Pulse duration=300μs, duty cycle 1.5%
UNISONIC TECHNOLOGIES CO., LTD
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MIN
TYP
MAX
400
UNIT
V
100
0.5
100
0.5
20
1.6
1.8
2
2.2
2.5
2.7
μA
mA
μA
mA
mA
2.5
V
V
V
300
10
A
0.5
15
μs
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
NPN SILICON TRANSISTOR
FUNCTION TEST CIRCUIT
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TYPICAL CHARACTERISTICS
DC Current Gain
DC Current Gain
8
6
VCE=2V
8
6
DC Current Gain, hFE
DC Current Gain, hFE
2
2
103
8
6
125℃
4
2
-40℃
2
10
VCE=10V
4
4
8
6
103
8
6
2
2
2
6
8
2
1
Collector Current, IC(A)
4
6
Tc=25℃
8
6
4
4
-40℃
102
4
2
125℃
4
Tc=25℃
101
10-1
101
10-1
8
2
Collector-emitter Saturation Voltage, VCE(SAT) (V)
4.0
3.5
2.5
10A
8
1.5
0.5
6
4
2
1
0
50
4
2
4
1
Collector Current, IC (A)
100
150
Base Current, IB (mA)
1.4
8
6
hFE=100
1.2
1
-40℃
0.8
0.6
125℃
Tc=25℃
0.4
0.2
0
200
2
1
4
6
12
8 10
Collector Current, Ic (mA)
Switching Time
Base-Emitter Saturation Voltage
2.4
8
6
Collctor-Emitter Saturation Voltage
Collector-Emitter Saturation Voltage
Collector-emitter Saturation Voltage, VCE(SAT) (V)

NPN SILICON TRANSISTOR
hFE=100
Vclamp=300V, VCC=12V,
hFE=100, RBE=47Ω,
L=7mH, Tc=25℃
2.2
10
2
ts
1.8
-40℃
1.6
Tc=25℃
1
1.4
tf
125℃
1.2
0
1
2
4
6 8 10
Collector Current, IC(A)
12
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10-1
1
2
4
6 8 10
Collector Current, IC(A)
12
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TYPICAL CHARACTERISTICS(Cont.)
Safe Operating Area
4
PULSE OPERATION *
Ic MAX PULSED
10μs
2
Collector Current, Ic (A)

NPN SILICON TRANSISTOR
1018
6
4
Ic MAX
CONT
100
μs
2
1008
1ms
6
4
10ms
2
10-1
8
6
4
2
10-2
100
* For single non
repelitive pulse
2
4
6 8
2
D.C.
4
6 8
2
101
102
Collector-Emitter Voltage, VCE (V)
4
6 8
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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