DATA SHEET PRELIMINARY DATA SHEET
Silicon Transistor
2SA1978
PNP EPITAXIAL SILICON TRANSISTOR MICROWAVE AMPLIFIER
FEAT...
DATA SHEET PRELIMINARY DATA SHEET
Silicon
Transistor
2SA1978
PNP EPITAXIAL SILICON
TRANSISTOR MICROWAVE AMPLIFIER
FEATURES
High fT fT = 5.5 GHz TYP. | S21e | = 10.0 dB TYP. @f = 1.0 GHz, VCE = −10 V, IC = −15 mA
2
PACKAGE DIMENSIONS (in milimeters)
_0.2 2.8+
0.4 +0.1 –0.05
1.5
0.65 +0.1 –0.15
High speed switching characteristics Equivalent
NPN transistor is the 2SC2351.
0.95 _0.2 2.9+
Alternative of the 2SA1424.
2
0.95
Parameter Collector to Base Voltage Collector to Emitter Voltage Emitter to Base Voltage Collector Current Total Power Dissipation Junction Temperature Storage Temperature
Symbol VCB0 VCE0 VEB0 IC PT Ti Tstg
Rating −20 −12 −3.0 −50 200 150 −65 to +150
Unit V V
1.1 to 1.4 0.3
Marking
0.16 +0.1 –0.06
V mA mW °C °C
ELECTRICAL CHARACTERISTICS (TA = 25 °C)
Parameter Collector Cutoff Current Emitter Cutoff Current DC Current Gain Gain Bandwidth Product Collector Capacitance Insertion Power Gain Noise Figure Symbol ICB0 IEB0 hFE fT Cre* | S21e | NF
2
PIN CONNECTIONS 1: Emitter 2: Base 3: Collector Marking: T93
Test Conditions VCB = −10 V VEB = −2 V VCE = −10 V, IC = −15 mA VCE = −10 V, IC = −15 mA VCB = −10 V, IE = 0, f = 1 MHz VCE = −10 V, IC = −15 mA, f = 1.0 GHz VCE = −10 V, IC = −3.0 mA, f = 1 GHz
MIN.
TYP.
0 to 0.1
MAX. −0.1 −0.1
0.4 +0.1 –0.05
ABSOLUTE MAXIMUM RATINGS (TA = 25 °C)
1
3
Unit µA µA
20 4.0
40 5.5 0.5
100 GHz 1 pF dB 3 dB
8.0
10.0 2.0
* Mesured by a 3-terminal bridge. Emitter and Case should be connected t...