KST-9075-000 1
STC945
NPN Silicon Transistor
Description
• Gener al small signal amplifier
Features
• Low collector saturation v oltage : VCE(sat)=0.25V(Max.)
• Low output capacitance : Cob=2pF(Typ.)
• Complementary pair with STA733
Ordering Information
Type NO. Marking Package Code
STC945 STC945 TO-92
Outline Dimensions unit :
mm
S
Se
em
mi
ic
co
on
nd
du
uc
ct
to
or
r
4.5±0.1
4.5±0.1
0.4±0.02
1.27 Typ.
2.54 Typ.
1 2 3
3.45±0.1
2.25±0.1
2.06±0.1
1.20±0.1
0.38
PIN Conne cti ons
1. Emitter
2. Collector
3. Bas e
14.0±0.40
KST-9075-000 2
STC945
Absolute maximum ratings (Ta=25°
°°
°C)
Characteristic Symbol Ratings Unit
Collector-Base voltage VCBO 50 V
Collector-Emitter voltage VCEO 40 V
Emitter-Base voltage VEBO 5V
Collector current IC150 mA
Collector dissipation PC625 mW
Junction temperature Tj150 °C
Storage temperature Tstg -55~150 °C
Electrical Characteristics (Ta=25°
°°
°C)
Characteristic Symbol Test Condition Min. Typ. Max. Unit
Collec tor-Base breakdown voltage BVCBO IC=50µA, IE=0 50 - - V
Collector - Emitter breakdown voltage BVCEO IC=1mA, IB=0 40 - - V
Emitter-Base break d own v olta ge BVEBO IE=50µA, IC=0 5 - - V
Collector cut-off current ICBO VCB=50V, IE=0 - - 0.1 µA
Emitter c ut-off c urrent IEBO VEB=5V, IC=0 - - 0.1 µA
DC current gain hFE*VCE=6V, IC=2mA 70 - 700 -
Collec tor -Emitter s a turation voltage VCE(sat) IC=100mA, IB=10mA - - 0.25 V
Transistion frequency fTVCE=10V, IC=1mA 80 - - MHz
Collec tor output capac itance Cob VCB=10V, IE=0, f=1MHz - 2 3.5 pF
Noise figure NF VCE=6V, IC=0.1mA,
f=1KHz, Rg=10KΩ--10dB
* : hFE rank / O : 70 ~ 140, Y : 120 ~ 240, G : 200 ~ 400, L : 300 ~ 700
KST-9075-000 3
STC945
Electrical Characteristic Curves
Fig. 4 hFE -IC
Fig. 1 PC –Ta Fig. 2 IC -VBE
Fig. 3 IC -VCE
Fig. 5 VCE(sat) -IC
