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QST4 Datasheet, PDF (1/3 Pages) Rohm – Low frequency amplifier | |||
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Transistors
QST4
Low frequency amplifier
QST4
zApplication
Low frequency amplifier
Driver
zFeatures
1) A collector current is large.
2) VCE(sat) : max. â250mV
At IC=â1.5A / IB=â30mA
zExternal dimensions (Unit : mm)
2.8
1.6
Each lead has same dimensions
ROHM : TSMT6
QST4
Abbreviated symbol : T04
zAbsolute maximum ratings (Ta=25°C)
Parameter
Symbol Limits
Collector-base voltage
VCBO
â15
Collector-emitter voltage
Emitter-base voltage
VCEO
VEBO
â12
â6
Collector current
IC
â3
ICP
â6
Power dissipation
Junction temperature
PC
500
1.25
Tj
150
Range of storage temperature Tstg â55 to +150
â1Single pulse, PW=1ms
â2Each Termminal Mounted on a Recommended
â3 Mounted on a 25mmÃ25mmà t 0.8mm Ceramic substrate
Unit
V
V
V
A
Aâ1
mWâ2
W â3
°C
°C
zEquivalent circuit
(6) (5)
(4)
(1) (2)
(3)
zElectrical characteristics (Ta=25°C)
Parameter
Collector-base breakdown voltage
Collector-emitter breakdown voltage
Emitter-base breakdown voltage
Collector cutoff current
Emitter cutoff current
Collector-emitter saturation voltage
DC current gain
Transition frequency
Collector output capacitance
â Pulsed
Symbol
BVCBO
BVCEO
BVEBO
ICBO
IEBO
VCE(sat)
hFE
fT
Cob
Min. Typ. Max. Unit
Conditions
â15
â
â
V IC=â10µA
â12
â
â
V IC=â1mA
â6
â
â
V IE=â10µA
â
â
â100 nA VCB=â15V
â
â
â100 nA VEB=â6V
â
â120 â250 mV IC=â1.5A, IB=â30mA
270
â
680
â VCE=â2V, IC=â500mA â
â
280
â
MHz VCE=â2V, IE=500mA, f=100MHz â
â
30
â
pF VCB=â10V, IE=0A, f=1MHz
Rev.C
1/2
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