Document
BCY78, VII, VIII, IX, X BCY79, VII, VIII, IX, X
SILICON PNP TRANSISTORS
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DESCRIPTION: The CENTRAL SEMICONDUCTOR BCY78 and BCY79 series types are silicon PNP epitaxial planar transistors, mounted in a hermetically sealed metal case, designed for low noise amplifier and switching applications.
MARKING: FULL PART NUMBER
TO-18 CASE
MAXIMUM RATINGS: (TA=25°C unless otherwise noted) Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Continuous Collector Current Peak Collector Current Peak Base Current Power Dissipation Power Dissipation (TC=25°C) Operating and Storage Junction Temperature Thermal Resistance Thermal Resistance
SYMBOL
VCBO VCEO VEBO
IC ICM IBM PD PD TJ, Tstg JA JC
BCY78 32
BCY79 45
32 45
5.0
100
200
200
340
1.0
-65 to +200
450
150
UNITS V V V mA mA mA
mW W °C °C/W °C/W
ELECTRICAL CHARACTERISTICS: (TA=25°C unless otherwise noted)
SYMBOL TEST CONDITIONS
MIN
ICBO
VCB=Rated VCBO
ICBO
VCB=Rated VCBO, TA=150°C
IEBO
VEB=5.0V
BVCBO
IC=10μA (BCY78)
32
BVCBO
IC=10μA (BCY79)
45
BVCEO
IC=2.0mA (BCY78)
32
BVCEO
IC=2.0mA (BCY79)
45
BVEBO
IE=1.0μA
5.0
VCE(SAT) IC=10mA, IB=250μA
VCE(SAT) IC=100mA, IB=2.5mA
VBE(SAT) IC=10mA, IB=250μA
0.60
VBE(SAT) IC=100mA, IB=2.5mA
0.70
VBE(ON)
VCE=5.0V, IC=2.0mA
0.60
MAX 15 10 20
0.25 0.80 0.85 1.20 0.75
BCY78-VII BCY78-VIII BCY78-IX
BCY79-VII BCY79-VIII BCY79-IX
MIN TYP MAX MIN MAX MIN MAX
hFE VCE=5.0V, IC=10μA
- 140 -
30 -
40 -
hFE VCE=5.0V, IC=2.0mA 120 - 220 180 310 250 460
hFE VCE=1.0V, IC=10mA
80 - -
120 400 160 630
hFE
VCE=1.0V, IC=100mA
40 - -
45 -
60 -
UNITS nA μA nA V V V V V V V V V V
BCY78-X BCY79-X MIN MAX 100 380 630 240 1000 60 -
R4 (4-June 2013)
BCY78, VII, VIII, IX, X BCY79, VII, VIII, IX, X
SILICON PNP TRANSISTORS
ELECTRICAL CHARACTERISTICS - Continued: (TA=25°C unless otherwise noted)
SYMBOL TEST CONDITIONS
MIN
fT VCE=5.0V, IC=10mA, f=100MHz
100
Cob VCB=10V, IE=0, f=1.0MHz
Cib VEB=0.5V, IC=0, f=1.0MHz
NF VCE=5.0V, IC=0.2mA, Rs=2.0kΩ, f=1.0kHz, B=200Hz
ton VCC=3.0V, IC=10mA, IB1=IB2=1.0mA
td VCC=3.0V, IC=10mA, IB1=IB2=1.0mA
tr VCC=3.0V, IC=10mA, IB1=IB2=1.0mA
toff VCC=3.0V, IC=10mA, IB1=IB2=1.0mA
ts VCC=3.0V, IC=10mA, IB1=IB2=1.0mA
tf VCC=3.0V, IC=10mA, IB1=IB2=1.0mA
ton VCC=10V, IC=100mA, IB1=IB2=10mA
td VCC=10V, IC=100mA, IB1=IB2=10mA
tr VCC=10V, IC=100mA, IB1=IB2=10mA
toff VCC=10V, IC=100mA, IB1=IB2=10mA
ts VCC=10V, IC=100mA, IB1=IB2=10mA
tf VCC=10V, IC=100mA, IB1=IB2=10mA
MAX
7.0 15 10 100 50 50 700 600 100 100 35 65 400 300 100
TO-18 CASE - MECHANICAL OUTLINE
UNITS MHz pF pF dB ns ns ns ns
ns ns ns ns ns ns ns ns
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LEAD CODE: 1) Emitter 2) Base 3) Collector
MARKING: FULL PART NUMBER
R4 (4-June 2013)
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