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BU941Z/BU941ZP
HIGH VOLTAGE IGNITION COIL DRIVER
■ VERYRUGGED BIPOLARTECHNOLOGY
■ BUILTIN CLAMPINGZENER
■ HIGH OPERATINGJUNCTION
TEMPERATURE
■ WIDERANGE OF PACKAGES
APPLICATIONS
■ HIGH RUGGEDNESSELECTRONIC
IGNITIONS
BU941ZPFI
NPN POWER DARLINGTON
TO-3
1
2
3
2
TO-218 ISOWATT218
1
3
2
1
INTERNAL SCHEMATIC DIAGRAM
for TO-3
Emitter: pin 2
Base: pin1
Collector: tab
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
BU941Z BU941ZP BUB9 41Z PFI
V
V
I
I
P
T
Collector-Emitter Voltage (IB= 0 ) 350 V
CEO
Emitter-Base Voltage (IC=0) 5 V
EBO
Collector Current 15 A
I
C
Collector Peak Curre nt 30 A
CM
Base Current 1 A
I
B
Base Peak Current 5 A
BM
Tot al Dissipat ion at Tc=25oC 180 155 65 W
tot
Storage Temperature -65 to 200 -65 to 175 -65 to 175
stg
Max. Operat ing Ju nc t io n T emperat ure 200 175 175
T
j
o
C
o
C
January 2000
1/8
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BU941Z/BU941ZP/BU941ZPFI
THERMAL DATA
R
thj-case
Thermal Resistance Junction-case Max 0.97 0.97 2.3
TO-3 TO-218 ISOWATT218
o
C/W
ELECTRICAL CHARACTERISTICS (T
=25oC unlessotherwise specified)
case
Symbol Parameter Test Cond ition s Min. Typ. Max. Unit
I
I
V
V
CE(sat)
CEO
EBO
CL
Collec t or Cut-of f
Current (I
B
=0)
Emitt er Cut-off Curren t
(I
=0)
C
∗ Cl am pi ng Voltag e IC= 10 0 mA 350 500 V
∗ Collec t or -Emit t er
Saturation Voltage
V
∗ Base-Emi tter
BE(sat)
Saturation Voltage
h
∗ DC C urrent Gain IC=5A VCE= 1 0 V 300
FE
V
Diode F orw a rd Voltag e IF=10A 2.5 V
F
Func tional Test
V
=300V
CE
=300V Tj=125oC
V
CE
=5V 20 mA
V
EB
IC=8A IB=100mA
=10A IB=250mA
I
C
=12A IB=300mA
I
C
IC=8A IB=100mA
=10A IB=250mA
I
C
=12A IB=300mA
I
C
V
=24V L=7mH 10 A
CC
100
0.5
1.8
1.8
2
2.2
2.5
2.7
(see fig. 1)
INDUCTIV E LOAD
t
s
t
f
Storage Time
Fall Time
(see fig. 3)
∗
Pulsed: Pulse duration = 300 µs, duty cycle 1.5 %
VCC=12V L=7mH
=0 RBE=47Ω
V
BE
=300V IC=7A
V
clamp
I
=70mA
B
15
0.5
µA
mA
V
V
V
V
V
V
µs
µs
Safe OperatingArea DC Current Gain
2/8
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BU941Z/BU941ZP/BU941ZPFI
DCCurrent Gain
Collector-emitterSaturation Voltage
Collector-emitterSaturationVoltage
Base-emitterSaturation Voltage
Base-emitterSaturation Voltage
Collector-emitterSaturationVoltage
3/8