BU941ZT/BU941ZTFP
BUB941ZT
HIGH VOLTAGE IGNITION COIL DRIVER
NPN POWER DARLINGTON
■VERYRUGGED BIPOLARTECHNOLOGY
■BUILTIN CLAMPINGZENER
■HIGH OPERATINGJUNCTION
TEMPERATURE
■WIDE RANGE OF PACKAGES
■SURFACE-MOUNTING D2PAK (TO-263)
POWERPACKAGE IN TUBE (NO SUFFIX)
OR IN TAPE & REEL (SUFFIX ”T4”)
APPLICATIONS
■HIGH RUGGEDNESS ELECTRONIC
IGNITIONS
INTERNAL SCHEMATIC DIAGRAM
January 1999
13
D2PAK
TO-263
123
TO-220 123
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VCEO Collector-Emitter Voltage (IB= 0) 350 V
VEBO Emitter-Base Voltage (IC=0) 5 V
I
CCollector Current 15 A
ICM Collector Peak Current 30 A
IBBase Current 1 A
IBM Base Peak Current 5 A
BU941ZT BU941ZTFP BUB941ZT
Ptot Total Dissipation at Tc=25o
C 150 55 150 W
Tstg Storage Temperature -65 to 175 -65 to 175 -65 to 175 oC
TjMax. Operating Junction Temperature 175 175 175 oC
TO-220FP
1/8
THERMAL DATA
TO-220
D2PAK TO-220FP
Rthj-case Thermal Resistance Junction-case Max 1 2.7 oC/W
ELECTRICAL CHARACTERISTICS (Tcase =25oC unlessotherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
ICEO Collector Cut-off
Current (IB=0) V
CE =300V
V
CE =300V T
j=125o
C100
0.5 µA
mA
IEBO Emitter Cut-off Current
(IC=0) V
EB =5V 20 mA
V
CL∗Clamping Voltage IC= 100 mA 350 500 V
VCE(sat)∗Collector-Emitter
Saturation Voltage IC=8A I
B=100mA
I
C=10A I
B=250mA 1.8
1.8 V
V
VBE(sat)∗Base-Emitter
Saturation Voltage IC=8A I
B=100mA
I
C=10A I
B=250mA 2.2
2.5 V
V
hFE∗DC Current Gain IC=5A V
CE = 10 V 300
VFDiode Forward Voltage IF=10A 2.5 V
Functional Test
(see fig. 1) VCC =24V L=7mH 10 A
t
s
t
f
INDUCTIVE LOAD
Storage Time
Fall Time
(see fig. 3)
VCC =12V L=7mH V
clamp =300V
I
C=7A I
B=70mA
V
BE =0 R
BE =47Ω15
0.5 µs
µs
∗
Pulsed: Pulse duration = 300 µs, duty cycle 1.5 %
Safe Operating Area DC Current Gain
BU941ZT / BU941ZTFP / BUB941ZT
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DCCurrent Gain
Collector-emitterSaturation Voltage
Base-emitterSaturationVoltage
Collector-emitter SaturationVoltage
Base-emitterSaturation Voltage
Collector-emitter SaturationVoltage
BU941ZT / BU941ZTFP / BUB941ZT
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FIGURE 1: FunctionalTest Circuit FIGURE 2: FunctionalTest Waveforms
FIGURE 3: SwitchingTime Test Circuit
BU941ZT / BU941ZTFP / BUB941ZT
4/8
DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 4.40 4.60 0.173 0.181
C 1.23 1.32 0.048 0.051
D 2.40 2.72 0.094 0.107
D1 1.27 0.050
E 0.49 0.70 0.019 0.027
F 0.61 0.88 0.024 0.034
F1 1.14 1.70 0.044 0.067
F2 1.14 1.70 0.044 0.067
G 4.95 5.15 0.194 0.203
G1 2.4 2.7 0.094 0.106
H2 10.0 10.40 0.393 0.409
L2 16.4 0.645
L4 13.0 14.0 0.511 0.551
L5 2.65 2.95 0.104 0.116
L6 15.25 15.75 0.600 0.620
L7 6.2 6.6 0.244 0.260
L9 3.5 3.93 0.137 0.154
DIA. 3.75 3.85 0.147 0.151
P011C
TO-220 MECHANICAL DATA
BU941ZT / BU941ZTFP / BUB941ZT
5/8
DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 4.4 4.6 0.173 0.181
B 2.5 2.7 0.098 0.106
D 2.5 2.75 0.098 0.108
E 0.45 0.7 0.017 0.027
F 0.75 1 0.030 0.039
F1 1.15 1.7 0.045 0.067
F2 1.15 1.7 0.045 0.067
G 4.95 5.2 0.195 0.204
G1 2.4 2.7 0.094 0.106
H 10 10.4 0.393 0.409
L2 16 0.630
L3 28.6 30.6 1.126 1.204
L4 9.8 10.6 0.385 0.417
L6 15.9 16.4 0.626 0.645
L7 9 9.3 0.354 0.366
Ø 3 3.2 0.118 0.126
L2
A
B
D
E
H
G
L6
¯
F
L3
G1
123
F2
F1
L7
L4
TO-220FP MECHANICAL DATA
BU941ZT / BU941ZTFP / BUB941ZT
6/8
DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 4.4 4.6 0.173 0.181
A1 2.49 2.69 0.098 0.106
B 0.7 0.93 0.027 0.036
B2 1.14 1.7 0.044 0.067
C 0.45 0.6 0.017 0.023
C2 1.21 1.36 0.047 0.053
D 8.95 9.35 0.352 0.368
E 10 10.4 0.393 0.409
G 4.88 5.28 0.192 0.208
L 15 15.85 0.590 0.624
L2 1.27 1.4 0.050 0.055
L3 1.4 1.75 0.055 0.068
L2 L3
L
B2 B
G
E
A
C2
D
C
A1
DETAIL”A” DETAIL”A”
A2
P011P6/E
TO-263 (D2PAK) MECHANICAL DATA
BU941ZT / BU941ZTFP / BUB941ZT
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BU941ZT / BU941ZTFP / BUB941ZT
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