Document
Ordering number:EN2971
NPN Epitaxial Planar Silicon Transistor
2SC4270
UHF Converter, Local Oscillator Applications
Features
· Small noise figure : NF=3.0dB typ (f=0.9GHz)
· High power gain
: PG=12dB typ (f=0.9GHz)
· High cutoff frequency : fT=3.0GHz typ
Package Dimensions
unit:mm 2018B
[2SC4270]
0.4 3
0.16
0~0.1
0.5 1.5 0.5 2.5
1 0.95 0.95 2 1.9 2.9
Specifications
Absolute Maximum Ratings at Ta = 25˚C
Parameter Collector-to-Base Voltage Collector-to-Emitter Voltage Emitter-to-Base Voltage Collector Current Base Current Collector Dissipation Junction Temperature Storage Temperature
Symbol
VCBO VCEO VEBO
IC IB PC Tj
Tstg
Electrical Characteristics at Ta = 25˚C
Conditions
Parameter
Symbol
Conditions
Collector Cutoff Current Emitter Cutoff Current DC Current Gain Gain-Bandwidth Product Output Capacitance Reverse Transfer Capacitance Power Gain Noise Figure
ICBO IEBO hFE
fT Cob Cre PG
NF
VCB=20V, IE=0 VEB=2V, IC=0 VCE=10V, IC=5mA VCE=10V, IC=10mA VCB=10V, f=1MHz VCB=10V, f=1MHz VCE=10V, IC=10mA, f=0.9GHz VCE=10V, IC=3mA, f=0.9GHz
* : The 2SC4270 is classified by 5mA hFE as follows : 40 2 80 60 3 120 100 4 200
0.8 1.1
1 : Base 2 : Emitter 3 : Collector SANYO : CP
Ratings 25 15 3 50 20
250 150 –55 to +150
Unit V V V mA mA
mW ˚C ˚C
Ratings min typ
40* 1.5 3.0
0.7 0.45
12 3.0
max 0.1 10
200*
1.0
(Note) Marking : KT hFE rank : 2, 3, 4
Unit
µA µA
GHz pF pF dB dB
Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other parameters) listed in products specifications of any and all SANYO products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquaters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
D1598HA (KT)/6069MO, TS No.2971–1/4
PG, NF Test Circuit
2SC4270
900MHz C1 ~5pF C2 ~10pF C3 ~10pF C4 ~10pF C5 ~10pF L1 W ≈ 1.5mm, l ≈ 25mm Strip line L2 W ≈ 4mm, l ≈ 25mm Strip line L3 0.5φ, l ≈ 40mm CH 2t+bead core
No.2971–2/4
2SC4270
S parameter
No.2971–3/4
S parameter (Common emitter)
VCE=10V, IC=5mA, ZO=50Ω
Freq (MHz) 100
| S11 | 0.771
∠ S11 –35.1
200
0.613
–64.7
400
0.429
–110.7
600
0.361
–133.5
800
0.355
–148.4
900
0.331
–153.7
1000
0.328
–158.9
1200
0.326
–167.9
2SC4270
| S21 | 8.763 7.004 4.882 3.471 2.693 2.450 2.236 1.932
∠ S21 147.2 127.6 103.1 90.5 81.6 78.9 75.5 69.9
| S12 | 0.027 0.043 0.061 0.075 0.091 0.100 0..