DATA SHEET
SILICON TRANSISTOR
MICROWAVE LOW NOISE AMPLIFIER
NPN SILICON EPITAXIAL TRANSISTOR
SUPER MINI MOLD
2SC4225
DESCRIPTION
The 2SC4225 is an NPN silicon epitaxial transistor designed for low
noise amplifier at VHF through UHF band.
It has large dynamic range and good current characteristics.
FEATURES
• Low Noise and High Gain
NF = 1.5 dB TYP. at VCE = 10 V, IC = 5 mA, f = 1 GHz
S21e 2 = 10 dB TYP. at VCE = 10 V, IC = 20 mA, f = 1 GHz
(reference value)
ABSOLUTE MAXIMUM RATINGS (TA = 25 ˚C)
Collector to Base Voltage VCB0 25 V
Collector to Emitter Voltage V
Emitter to Base Voltage V
Collector Current I
Total Power Dissipation P
Junction Temperature T
Storage Temperature T
CE0 12 V
EB0 3.0 V
C 70 mA
T 160 mW
j 150 ˚C
stg –65 to +150 ˚C
ELECTRICAL CHARACTERISTICS (TA = 25 ˚C)
PACKAGE DIMENSIONS
in millimeters
2.1 ± 0.1
1.25 ± 0.1
2
0.65
+0.1
–0
0.3
0.3
0.65
1
2.0 ± 0.2
0.9 ± 0.1
PIN CONNECTIONS
1. Emitter
2. Base
3. Collector
3
Marking
0 to 0.1
+0.1
+0.1
–0
0.3
–0.05
0.15
Characteristics Symbol MIN. TYP. MAX. Unit Test Conditions
Collector Cutoff Current ICB0 1.0
Emitter Cutoff Current IEB0 1.0
DC Current Gain hFE 40 80 200
Gain Bandwidth Product fT 4 GHz
Output Capacitance Cob 1.2 1.8 pF VCB = 3 V, IE = 0, f = 1 MHz
Insertion Power Gain S21e
Noise Figure
hFE Classifications
Rank R2 R3
Marking R2 R3
hFE 40 to 120 100 to 200
Document No. P11192EJ2V0DS00 (2nd edition)
Date Published February 1996 P
Printed in Japan
µ
AVCB = 10 V, IE = 0
µ
AVEB = 2 V, IC = 0
VCE = 3 V, IC = 20 mA, pulsed
VCE = 3 V, IC = 20 mA, f = 1 GHz
2
7.5 9.0 dB
NF 1.5 3.0 dB VCE = 3 V, IC = 5 mA, f = 1GHz
VCE = 3 V, IC = 20 mA, f = 1 GHz
©
1996
TYPICAL CHARACTERISTICS (TA = 25 ˚C)
2SC4225
DC CURRENT GAIN vs.
COLLECTOR CURRENT
200
VCE = 10 V
100
50
30
- DC Current Gain
FE
h
20
10
0.5 1 2 5 10 20 50 70
IC - Collector Current - mA
GAIN BANDWIDTH PRODUCT vs.
COLLECTOR CURRENT
7
VCE = 10 V
5
2
COLLECTOR CURRENT vs.
BASE TO EMITTER VOLTAGE
70
V
CE
50
= 10 V
20
10
5
2
- Collector Current - mA
C
I
1
0.5
0.5 0.6 0.7 0.8 0.9
VBE - Base to Emitter Voltage - V
INSERTION GAIN vs.
COLLECTOR CURRENT
15
VCE = 10 V
f = 1.0 GHz
10
1
0.5
0.2
- Gain Bandwidth Product - GHz
T
f
0.1
0.5 1 2 5 10 20 50 70
IC - Collector Current - mA
OUTPUT CAPACITANCE vs.
COLLECTOR TO BASE VOLTAGE
2
f = 1.0 GHz
1
0.5
- Output Capacitance - pF
ob
C
0.3
0 0.5 1 2 5 10 20 30
VCB - Collector to Base Voltage - V
5
- Insertion Gain - dB
2
21e
S
0
0.5 1 2 5 10 20 50 70
IC - Collector Current - mA
NOISE FIGURE vs.
COLLECTOR CURRENT
7
6
VCE = 10 V
f = 1.2 GHz
5
4
3
2
NF - Noise Figure - dB
1
0
0.5 1 2 5 10 20 50 70
IC - Collector Current - mA
2
NF, Ga vs. COLLECTOR CURRENT
6
5
4
3
2
NF - Noise Figure - dB
1
0
1 3 5 7 10 30
I
C
- Collector Current - mA
G
NF
V
CE
= 10 V
f = 1 GHz
a
10
5
- Associated Gain - dB
a
G
0
2SC4225
3
S-PARAMETER
VCE = 3 V, IC = 3 mA
Frequency S11 S21 S12 S22
MHz MAG ANG MAG ANG MAG ANG MAG ANG
100.00 0.843 –40.1 8.958 150.1 0.058 71.5 0.917 –22.9
200.00 0.718 –70.6 7.260 129.1 0.091 56.8 0.752 –37.6
300.00 0.594 –94.7 5.738 113.1 0.113 47.2 0.600 –48.3
400.00 0.525 –112.6 4.674 103.7 0.124 45.2 0.495 –52.9
500.00 0.484 –127.3 3.900 95.2 0.131 42.4 0.413 –55.8
600.00 0.462 –140.8 3.448 90.4 0.142 43.3 0.365 –57.6
700.00 0.442 –152.7 3.124 82.8 0.149 42.6 0.325 –58.8
800.00 0.432 –161.9 2.834 78.4 0.160 42.9 0.301 –61.0
900.00 0.427 –169.2 2.501 72.7 0.165 45.0 0.278 –63.3
1000.00 0.440 –176.6 2.307 68.2 0.174 44.8 0.257 –66.7
1100.00 0.452 175.9 2.115 64.9 0.184 47.4 0.239 –70.2
1200.00 0.453 167.6 1.987 60.0 0.198 46.8 0.220 –73.4
1300.00 0.449 162.2 1.895 56.1 0.213 46.9 0.207 –77.4
1400.00 0.446 158.3 1.726 52.3 0.216 46.2 0.192 –81.7
1500.00 0.465 154.7 1.627 47.4 0.226 45.3 0.185 –86.6
1600.00 0.483 151.1 1.527 46.8 0.234 47.9 0.179 –92.9
1700.00 0.498 145.6 1.437 44.1 0.244 47.4 0.173 –99.7
1800.00 0.512 141.5 1.431 41.9 0.262 49.2 0.167 –109.1
1900.00 0.516 138.1 1.381 38.8 0.279 47.9 0.163 –116.6
2000.00 0.528 135.1 1.363 33.5 0.296 46.2 0.162 –123.7
2SC4225
V
CE = 3 V, IC = 10 mA
Frequency S11 S21 S12 S22
MHz MAG ANG MAG ANG MAG ANG MAG ANG
100.00 0.583 –73.8 18.505 129.9 0.042 64.4 0.710 –44.7
200.00 0.453 –112.7 11.723 108.7 0.059 57.2 0.451 –61.0
300.00 0.388 –136.1 8.269 96.9 0.077 56.3 0.315 –69.6
400.00 0.367 –151.2 6.297 90.6 0.090 59.0 0.240 –73.6
500.00 0.363 –162.6 5.086 85.0 0.103 59.3 0.191 –76.3
600.00 0.363 –172.6 4.407 82.2 0.120 61.9 0.161 –78.8
700.00 0.360 178.7 3.802 76.4 0.136 61.0 0.138 –82.2
800.00 0.360 173.2 3.468 73.4 0.155 60.6 0.121 –87.2
900.00 0.364 168.8 3.104 69.3 0.167 61.2 0.107 –93.1
1000.00 0.384 164.4 2.846 65.9 0.184 59.4 0.095 –101.3
1100.00 0.401 159.4 2.595 63.5 0.199 60.3 0.085 –109.7
1200.00 0.407 152.9 2.426 59.5 0.217 58.1 0.080 –120.3
1300.00 0.408 148.8 2.311 56.0 0.237 56.9 0.078 –130.6
1400.00 0.408 146.0 2.093 52.9 0.244 55.1 0.089 –142.6
1500.00 0.426 143.6 1.962 48.5 0.259 52.8 0.084 –151.9
1600.00 0.442 141.2 1.840 48.4 0.268 54.0 0.091 –160.6
1700.00 0.458 137.3 1.732 46.3 0.282 52.3 0.103 –169.0
1800.00 0.473 134.2 1.714 44.3 0.301 52.9 0.117 –177.8
1900.00 0.480 131.5 1.651 41.5 0.320 50.5 0.128 176.1
2000.00 0.493 129.0 1.626 36.4 0.338 47.9 0.139 172.1
4
VCE = 5 V, IC = 3 mA
Frequency S11 S21 S12 S22
MHz MAG ANG MAG ANG MAG ANG MAG ANG
100.00 0.852 –36.9 9.015 151.8 0.051 73.0 0.928 –19.9
200.00 0.730 –65.3 7.451 131.5 0.081 58.9 0.781 –32.7
300.00 0.601 –88.5 5.983 115.8 0.103 49.3 0.638 –42.4
400.00 0.526 –105.8 4.912 106.4 0.113 47.5 0.539 –45.9
500.00 0.479 –120.3 4.118 97.6 0.120 44.9 0.456 –47.9
600.00 0.452 –134.2 3.658 93.0 0.131 45.6 0.413 –48.9
700.00 0.427 –146.5 3.204 84.8 0.138 44.8 0.374 –49.4
800.00 0.414 –156.2 3.018 80.8 0.149 45.0 0.352 –50.9
900.00 0.408 –164.2 2.666 75.0 0.153 47.5 0.330 –52.6
1000.00 0.417 –172.1 2.456 70.5 0.162 47.4 0.309 –55.4
1100.00 0.426 180.0 2.252 67.1 0.172 49.7 0.292 –57.9
1200.00 0.426 171.3 2.115 62.4 0.184 49.4 0.270 –60.5
1300.00 0.422 165.7 2.018 58.4 0.198 49.6 0.254 –63.1
1400.00 0.420 161.6 1.834 54.7 0.202 49.4 0.239 –66.0
1500.00 0.439 157.6 1.730 49.9 0.213 48.6 0.230 –69.3
1600.00 0.455 153.8 1.625 49.2 0.220 51.3 0.222 –73.7
1700.00 0.471 148.2 1.532 46.4 0.231 51.0 0.211 –78.8
1800.00 0.485 143.8 1.523 44.2 0.249 52.8 0.199 –85.9
1900.00 0.490 140.4 1.471 41.1 0.265 51.6 0.191 –91.7
2000.00 0.501 137.2 1.450 35.8 0.283 50.0 0.184 –97.9
2SC4225
V
CE = 5 V, IC = 10 mA
Frequency S11 S21 S12 S22
MHz MAG ANG MAG ANG MAG ANG MAG ANG
100.00 0.596 –66.5 19.076 132.3 0.039 66.0 0.741 –38.6
200.00 0.446 –103.7 12.382 110.9 0.056 58.8 0.493 –52.0
300.00 0.370 –127.5 8.801 98.8 0.070 57.5 0.355 –57.7
400.00 0.337 –143.6 6.728 92.4 0.083 60.3 0.280 –58.6
500.00 0.327 –155.8 5.466 86.7 0.096 60.7 0.229 –58.4
600.00 0.323 –166.6 4.732 84.0 0.112 63.3 0.202 –58.1
700.00 0.320 –176.1 4.073 78.2 0.126 62.3 0.178 –58.2
800.00 0.321 177.6 3.720 75.0 0.145 62.3 0.161 –59.6
900.00 0.323 172.7 3.202 70.8 0.157 63.1 0.147 –61.9
1000.00 0.342 167.9 3.057 67.7 0.172 61.5 0.133 –65.2
1100.00 0.358 162.4 2.792 65.2 0.187 62.1 0.118 –68.9
1200.00 0.364 155.7 2.607 61.4 0.204 60.1 0.105 –73.6
1300.00 0.366 151.4 2.479 57.8 0.222 59.2 0.095 –79.7
1400.00 0.367 148.6 2.247 55.0 0.230 57.5 0.082 –87.2
1500.00 0.385 145.9 2.110 50.7 0.244 55.3 0.077 –95.8
1600.00 0.401 143.5 1.978 50.5 0.254 56.7 0.074 –107.1
1700.00 0.417 139.5 1.862 48.3 0.267 55.1 0.072 –120.6
1800.00 0.433 136.3 1.841 46.3 0.287 55.7 0.074 –137.5
1900.00 0.441 133.6 1.779 43.5 0.305 53.3 0.079 –149.6
2000.00 0.454 131.0 1.748 38.5 0.324 50.7 0.084 –158.3
5
VCE = 10 V, IC = 3 mA
Frequency S11 S21 S12 S22
MHz MAG ANG MAG ANG MAG ANG MAG ANG
100.00 0.875 –33.4 9.048 153.5 0.043 73.6 0.939 –16.6
200.00 0.754 –59.7 7.600 134.2 0.070 60.9 0.812 –27.2
300.00 0.618 –81.5 6.193 118.5 0.090 51.8 0.683 –35.4
400.00 0.537 –97.9 5.145 109.1 0.100 49.8 0.592 –37.9
500.00 0.480 –112.0 4.332 100.3 0.107 47.1 0.513 –39.2
600.00 0.446 –126.0 3.866 95.6 0.117 47.9 0.475 –39.6
700.00 0.415 –138.4 3.396 87.4 0.123 47.4 0.440 –39.5
800.00 0.395 –148.8 3.208 83.4 0.133 47.8 0.422 –40.8
900.00 0.386 –157.5 2.834 77.4 0.138 50.4 0.404 –41.7
1000.00 0.389 –165.9 2.612 73.0 0.146 50.2 0.383 –44.2
1100.00 0.395 –174.5 2.395 69.7 0.155 53.0 0.367 –46.3
1200.00 0.393 176.5 2.247 64.9 0.166 52.9 0.345 –48.3
1300.00 0.390 170.4 2.141 61.1 0.179 53.3 0.328 –49.9
1400.00 0.387 165.9 1.953 57.4 0.183 53.2 0.312 –51.6
1500.00 0.405 161.7 1.837 52.7 0.194 52.7 0.302 –53.7
1600.00 0.422 157.4 1.731 51.9 0.201 55.9 0.294 –56.6
1700.00 0.436 151.6 1.633 49.2 0.212 55.4 0.283 –60.1
1800.00 0.449 146.9 1.622 47.0 0.230 57.3 0.269 –64.8
1900.00 0.455 143.2 1.567 43.7 0.246 56.4 0.258 –68.7
2000.00 0.466 140.0 1.547 38.4 0.262 54.4 0.247 –73.2
2SC4225
V
CE = 10 V, IC = 10 mA
Frequency S11 S21 S12 S22
MHz MAG ANG MAG ANG MAG ANG MAG ANG
100.00 0.636 –58.6 19.263 135.2 0.034 68.1 0.778 –31.8
200.00 0.461 –92.8 12.924 113.7 0.050 61.0 0.547 –41.7
300.00 0.360 –115.8 9.312 101.0 0.064 58.7 0.416 –45.1
400.00 0.314 –132.4 7.156 94.5 0.076 61.3 0.346 –43.7
500.00 0.294 –145.2 5.814 88.7 0.087 62.1 0.299 –42.2
600.00 0.286 –157.4 5.056 86.1 0.101 64.8 0.275 –40.6
700.00 0.278 –167.8 4.365 80.1 0.114 64.1 0.256 –39.5
800.00 0.277 –175.4 3.962 77.0 0.130 64.0 0.243 –39.8
900.00 0.280 178.6 3.421 72.6 0.142 65.2 0.231 –40.8
1000.00 0.293 173.1 3.271 69.6 0.157 63.4 0.216 –42.5
1100.00 0.309 166.9 2.988 67.2 0.170 64.6 0.204 –44.5
1200.00 0.314 159.8 2.788 63.4 0.184 62.7 0.188 –46.7
1300.00 0.317 155.2 2.649 60.0 0.202 62.0 0.174 –48.4
1400.00 0.319 152.1 2.406 57.1 0.209 60.5 0.159 –50.4
1500.00 0.337 149.4 2.256 52.9 0.224 58.5 0.150 –52.9
1600.00 0.353 146.6 2.121 52.6 0.233 60.1 0.140 –56.5
1700.00 0.369 142.5 2.000 50.5 0.246 58.8 0.130 –61.1
1800.00 0385 139.2 1.978 48.6 0.265 59.3 0.115 –68.5
1900.00 0.394 136.3 1.912 45.6 0.283 57.1 0.104 –75.1
2000.00 0.408 133.8 1.880 40.6 0.300 54.5 0.096 –83.3
6
[MEMO]
2SC4225
7
2SC4225
No part of this document may be copied or reproduced in any form or by any means without the prior written
consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this
document.
NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual
property rights of third parties by or arising from use of a device described herein or any other liability arising
from use of such device. No license, either express, implied or otherwise, is granted under any patents,
copyrights or other intellectual property rights of NEC Corporation or others.
While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices,
the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or
property arising from a defect in an NEC semiconductor device, customer must incorporate sufficient safety
measures in its design, such as redundancy, fire-containment, and anti-failure features.
NEC devices are classified into the following three quality grades:
“Standard“, “Special“, and “Specific“. The Specific quality grade applies only to devices developed based on
a customer designated “quality assurance program“ for a specific application. The recommended applications
of a device depend on its quality grade, as indicated below. Customers must check the quality grade of each
device before using it in a particular application.
Standard: Computers, office equipment, communications equipment, test and measurement equipment,
audio and visual equipment, home electronic appliances, machine tools, personal electronic
equipment and industrial robots
Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster
systems, anti-crime systems, safety equipment and medical equipment (not specifically designed
for life support)
Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life
support systems or medical equipment for life support, etc.
The quality grade of NEC devices in “Standard“ unless otherwise specified in NEC's Data Sheets or Data Books.
If customers intend to use NEC devices for applications other than those specified for Standard quality grade,
they should contact NEC Sales Representative in advance.
Anti-radioactive design is not implemented in this product.
M4 94.11
8
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