BU941ZT/BU941ZTFP
BUB941ZT
HIGH VOL TAGE IGNITION COIL DR IVER
NPN POWER DARLINGTON
■VERY RUGGED BIPOLAR TECHNOLOGY
■BUILT IN CLAMPING ZENER
■HIGH OPE RA TING JUNCTIO N
TEMPERATURE
■WIDE RANGE OF PACKAGES
■SURFACE -M O UNT ING D2PA K (TO-263)
POWER PACKAGE IN TUBE (NO SUFFIX)
OR IN TAPE & REEL (SUFFIX "T4")
APPLICATIONS
■HIGH RUG GE DNES S ELECT RO NI C
IGNITIONS
®
INT E R NAL SCH E M ATI C DIAG RA M
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
ICCollector 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 = 25 oC 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
ELE CT RICAL CHAR ACT ERIST ICS (Tcase = 25 oC unless otherwise specif ied)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
ICEO Collector Cut-off
Current (IB = 0) VCE = 300 V
VCE = 300 V Tj = 125 oC100
0.5 µA
mA
IEBO Emitter Cut-off Current
(IC = 0) VEB = 5 V 20 mA
VCL∗Clamping Voltage IC = 100 mA 350 500 V
VCE(sat)∗Collector-Emitter
Saturation Voltage IC = 8 A IB = 100 mA
IC = 10 A IB = 250 mA 1.8
1.8 V
V
VBE(sat)∗Base-Emitter
Saturation Voltage IC = 8 A IB = 100 mA
IC = 10 A IB = 250 mA 2.2
2.5 V
V
hFE∗DC Current Gain IC = 5 A VCE = 10 V 300
VFDiode Forward Voltage IF = 10 A 2.5 V
Functional Test
(see fig. 1) VCC = 24 V L= 7 mH 10 A
ts
tf
INDUCTIVE LOAD
Storage Time
Fall Time
(see fig. 3)
VCC = 12 V L= 7 mH Vcla mp = 300V
IC = 7 A IB = 70 mA
VBE = 0 RBE = 47 Ω15
0.5 µs
µs
∗ P ulsed: P ulse duratio n = 300 µs, duty cycle 1.5 %
Safe O perat ing Are a DC Current Ga in
BU941Z T / BU941Z T FP / BUB941Z T
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DC Cur rent Gai n
Collector-emitter Saturation Voltage
Base-emitter Saturation Voltage
Collector-emitter Saturation Voltage
Ba se-em itter Sat urat i on Voltage
Collector-emitter Saturation Voltage
BU941ZT / BU941ZTFP / BUB941ZT
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FIG URE 1: Functional Tes t Circuit FIGURE 2: Functional Test Waveforms
FIG URE 3: Switching Tim e Tes t Circuit
BU941Z T / BU941Z T FP / BUB941Z T
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 MECHA NICAL 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-2 20FP ME CH ANI CAL DAT A
BU941Z T / BU941Z T FP / BUB941Z T
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 (D
2
PAK) MECHANICAL DATA
BU941ZT / BU941ZTFP / BUB941ZT
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BU941Z T / BU941Z T FP / BUB941Z T
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