ISC 2SC4571

isc RF Product Specification
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
2SC4571
DESCRIPTION
·High Current-Gain—Bandwidth Product
fT= 5.0 GHz TYP. @VCE = 5 V, IC = 5 mA, f = 1.0 GHz
·Low COB
0.9pF TYP. @VCB = 5 V, IE = 0, f = 1.0 MHz
APPLICATIONS
·Designed for use in UHF oscillator and mixer.
ABSOLUTE MAXIMUM RATINGS(Ta=25℃)
SYMBOL
PARAMETER
VALUE
UNIT
VCBO
Collector-Base Voltage
20
V
VCEO
Collector-Emitter Voltage
12
V
VEBO
Emitter-Base Voltage
3.0
V
IC
Collector Current-Continuous
60
mA
PC
Collector Power Dissipation
@TC=25℃
0.12
W
TJ
Junction Temperature
125
℃
-55~125
℃
Tstg
Storage Temperature Range
isc Website：www.iscsemi.cn
isc RF Product Specification
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
2SC4571
ELECTRICAL CHARACTERISTICS
TC=25℃ unless otherwise specified
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP.
MAX
UNIT
ICBO
Collector Cutoff Current
VCB= 15V; IE= 0
0.1
μA
IEBO
Emitter Cutoff Current
VEB= 1V; IC= 0
0.1
μA
Collector-Emitter Saturation Voltage
IC= 5mA ; IB= 0.5mA
0.5
V
DC Current Gain
IC= 5mA ; VCE= 5V
Current-Gain—Bandwidth Product
IC= 5mA ; VCE= 5V
5.0
COB
Output Capacitance
IE= 0 ; VCB= 3V;f= 1.0MHz
0.9
︱S21e︱2
Insertion Power Gain
IC= 5mA ; VCE= 5V;f= 1.0GHz
VCE(sat)
hFE
fT
‹
hFE Classification
Rank
T75
T76
T77
Marking
T75
T76
T77
hFE
40-80
60-120
100-200
isc Website：www.iscsemi.cn
2
40
5.0
200
GHz
1.2
pF
dB
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
isc Website：www.iscsemi.cn
isc RF Product Specification
2SC4571
isc RF Product Specification
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
2SC4571
S-PARAMETER
VCE = 5 V, IC = 5 mA, ZO = 50Ω
S21
S11
Freque.
S12
S22
MHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
100
0.874
-24.2
8.628
152.9
0.032
71.8
0.910
-18.4
200
0.752
-49.1
8.089
135.3
0.054
61.2
0.763
-30.3
300
0.625
-70.9
7.278
121.4
0.068
55.5
0.643
-36.7
400
0.523
-89.3
6.406
110.0
0.079
52.9
0.560
-40.1
500
0.444
-105.3
5.617
101.1
0.088
52.1
0.502
-42.3
600
0.396
-117.4
4.890
94.1
0.097
51.8
0.462
-43.8
700
0.359
-129.0
4.345
88.0
0.105
51.9
0.434
-45.2
800
0.336
-138.5
3.893
82.9
0.114
52.0
0.414
-46.6
900
0.318
-147.3
3.529
78.3
0.122
52.4
0.398
-47.9
1000
0.307
-155.3
3.221
74.0
0.131
52.3
0.385
-49.5
1100
0.299
-162.8
2.959
70.1
0.140
52.2
0.376
-51.0
1200
0.294
-169.3
2.751
66.4
0.149
52.0
0.371
-52.7
1300
0.292
-175.3
2.565
62.9
0.158
52.4
0.364
-54.2
1400
0.292
179.1
2.407
59.5
0.167
51.9
0.359
-55.6
1500
0.293
173.6
2.269
56.4
0.177
51.3
0.356
-57.3
1600
0.296
168.8
2.155
53.3
0.186
51.2
0.350
-58.9
1700
0.298
164.4
2.045
50.2
0.195
50.6
0.346
-60.4
1800
0.300
160.2
1.950
47.4
0.206
49.9
0.342
-62.3
1900
0.302
156.1
1.873
44.6
0.215
49.4
0.337
-64.5
2000
0.310
151.8
1.793
41.6
0.225
48.8
0.327
-67.1
2100
0.314
148.3
1.726
38.9
0.235
48.2
0.322
-69.4
2200
0.318
144.7
1.662
36.3
0.245
47.2
0.317
-72.4
2300
0.313
141.3
1.609
33.7
0.255
46.3
0.312
-75.3
2400
0.328
138.2
1.556
31.2
0.265
45.4
0.307
-78.9
2500
0.335
135.1
1.513
28.7
0.274
44.5
0.304
-82.9
2600
0.339
131.9
1.466
26.3
0.284
43.4
0.302
-87.1
2700
0.345
129.3
1.427
23.9
0.294
42.5
0.302
-91.0
2800
0.349
126.3
1.387
21.5
0.304
41.5
0.304
-94.8
2900
0.356
123.8
1.353
19.3
0.315
40.4
0.309
-98.9
3000
0.361
121.0
1.323
17.2
0.323
39.4
0.313
-102.4
isc Website：www.iscsemi.cn
4
isc RF Product Specification
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
2SC4571
VCE = 5 V, IC = 3 mA, ZO = 50Ω
S21
S11
Freque.
S12
S22
MHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
100
0.923
-19.2
5.456
157.3
0.034
75.1
0.951
-13.6
200
0.844
-39.4
5.317
142.0
0.060
63.0
0.852
-24.1
300
0.746
-57.9
5.047
128.9
0.078
55.7
0.752
-31.3
400
0.660
-74.5
4.667
118.1
0.091
51.5
0.674
-35.8
500
0.575
-90.3
4.321
108.3
0.101
48.3
0.612
-39.0
600
0.516
-102.7
3.860
100.4
0.108
46.4
0.567
-41.5
700
0.461
-114.8
3.546
93.2
0.115
45.7
0.532
-43.6
800
0.423
-125.2
3.237
87.1
0.122
45.3
0.507
-45.4
900
0.396
-134.9
2.979
81.6
0.128
44.8
0.486
-47.1
1000
0.375
-143.6
2.749
76.6
0.134
45.2
0.471
-48.8
1100
0.362
-151.4
2.547
72.4
0.142
45.3
0.461
-50.5
1200
0.349
-158.8
2.380
68.0
0.147
45.4
0.452
-52.3
1300
0.343
-165.2
2.222
64.2
0.154
45.9
0.445
-54.0
1400
0.339
-171.7
2.101
60.4
0.161
46.1
0.438
-55.6
1500
0.336
-177.6
1.984
57.0
0.169
46.4
0.433
-57.3
1600
0.337
177.0
1.887
53.5
0.177
46.5
0.428
-59.0
1700
0.338
172.0
1.798
50.3
0.184
46.6
0.423
-61.1
1800
0.337
167.1
1.719
47.2
0.193
46.7
0.419
-63.1
1900
0.339
162.7
1.648
44.0
0.201
46.5
0.411
-65.2
2000
0.345
158.0
1.579
41.2
0.211
46.3
0.405
-68.0
2100
0.348
153.8
1.524
38.4
0.219
46.0
0.399
-70.4
2200
0.351
150.0
1.470
35.4
0.229
45.6
0.394
-73.4
2300
0.357
146.1
1.424
32.8
0.238
45.3
0.389
-76.4
2400
0.361
142.5
1.376
30.1
0.247
44.6
0.386
-80.0
2500
0.367
139.2
1.338
27.5
0.257
44.0
0.383
-83.8
2600
0.371
135.8
1.296
25.0
0.266
43.5
0.381
-88.0
2700
0.376
132.6
1.263
22.5
0.275
42.9
0.380
-91.4
2800
0.381
129.3
1.231
20.1
0.287
42.1
0.385
-95.4
2900
0.387
126.4
1.199
17.9
0.297
41.4
0.389
-99.2
3000
0.392
123.4
1.169
15.7
0.306
40.4
0.391
-103.0
isc Website：www.iscsemi.cn
isc RF Product Specification
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
2SC4571
VCE = 5 V, IC = 1 mA, ZO = 50Ω
S21
S11
Freque.
S12
S22
MHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
100
0.977
-14.2
1.896
165.0
0.036
79.9
0.988
-7.4
200
0.944
-28.0
1.948
150.9
0.069
69.5
0.954
-14.2
300
0.897
-41.9
1.954
139.2
0.095
61.1
0.911
-20.1
400
0.848
-54.9
1.907
128.9
0.116
53.7
0.867
-25.2
500
0.793
-68.0
1.878
119.8
0.131
47.9
0.820
-29.5
600
0.744
-79.1
1.745
110.9
0.143
42.2
0.786
-33.4
700
0.689
-90.6
1.697
102.7
0.151
38.6
0.752
-36.6
800
0.646
-101.4
1.630
95.2
0.155
35.1
0.726
-39.6
900
0.605
-111.3
1.579
88.5
0.157
32.9
0.702
-42.3
1000
0.570
-121.0
1.519
82.1
0.161
31.1
0.684
-44.8
1100
0.542
-130.0
1.455
76.5
0.162
30.0
0.669
-47.4
1200
0.516
-138.2
1.393
71.2
0.162
29.1
0.661
-49.9
1300
0.500
-145.7
1.325
66.3
0.161
29.0
0.650
-52.2
1400
0.489
-153.1
1.270
61.8
0.163
29.4
0.643
-54.3
1500
0.478
-160.1
1.213
57.5
0.163
29.3
0.637
-56.7
1600
0.470
-166.6
1.168
53.5
0.163
30.5
0.631
-59.0
1700
0.465
-172.8
1.128
49.5
0.164
31.6
0.624
-61.6
1800
0.461
-178.5
1.086
45.9
0.166
33.5
0.621
-64.0
1900
0.458
175.7
1.047
42.5
0.169
34.4
0.614
-66.7
2000
0.458
170.1
1.012
39.2
0.173
36.3
0.608
-69.6
2100
0.460
165.0
0.980
36.1
0.178
38.0
0.603
-72.6
2200
0.460
160.3
0.946
33.1
0.183
39.5
0.599
-76.0
2300
0.462
155.6
0.922
30.4
0.191
40.9
0.593
-79.3
2400
0.465
151.1
0.889
27.7
0.198
42.3
0.591
-83.1
2500
0.469
146.7
0.867
25.3
0.206
43.0
0.588
-87.2
2600
0.472
142.5
0.843
22.8
0.216
44.2
0.588
-91.3
2700
0.476
138.7
0.820
20.5
0.227
44.8
0.586
-95.3
2800
0.479
134.7
0.799
18.5
0.239
45.2
0.589
-99.4
2900
0.482
130.9
0.779
16.5
0.251
45.2
0.591
-103.3
3000
0.487
127.2
0.761
14.8
0.263
45.4
0.593
-107.1
isc Website：www.iscsemi.cn
6
isc RF Product Specification
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
2SC4571
VCE = 3 V, IC = 5 mA, ZO = 50Ω
S21
S11
Freque.
S12
S22
MHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
100
0.871
-26.4
8.583
152.2
0.037
69.9
0.894
-21.2
200
0.735
-53.1
7.998
133.6
0.061
59.2
0.730
-35.0
300
0.608
-76.6
7.129
119.2
0.076
53.4
0.601
-42.3
400
0.512
-96.0
6.208
107.9
0.087
51.2
0.515
-46.6
500
0.441
-112.5
5.402
99.1
0.096
49.9
0.452
-49.3
600
0.400
-125.0
4.681
92.2
0.105
49.8
0.410
-51.2
700
0.367
-136.5
4.139
86.3
0.116
50.1
0.379
-52.9
800
0.349
-146.0
3.707
81.3
0.124
50.1
0.358
-54.5
900
0.338
-154.7
3.362
76.6
0.133
50.5
0.341
-55.7
1000
0.328
-162.1
3.061
72.4
0.142
50.5
0.327
-57.7
1100
0.324
-168.9
2.817
68.5
0.153
50.5
0.317
-59.3
1200
0.319
-175.4
2.611
64.8
0.162
50.1
0.311
-61.0
1300
0.319
179.0
2.436
61.4
0.172
49.9
0.305
-62.6
1400
0.321
173.8
2.296
57.9
0.181
49.7
0.300
-64.3
1500
0.322
168.7
2.159
54.7
0.192
49.5
0.294
-65.8
1600
0.324
164.3
2.048
51.6
0.201
48.8
0.289
-67.7
1700
0.328
160.2
1.950
48.5
0.212
48.2
0.284
-69.3
1800
0.329
155.9
1.858
45.8
0.221
47.6
0.280
-71.4
1900
0.333
152.0
1.777
42.7
0.234
46.9
0.272
-73.9
2000
0.339
148.2
1.716
40.0
0.242
46.1
0.265
-77.0
2100
0.343
144.7
1.647
37.4
0.253
45.2
0.258
-79.9
2200
0.348
141.6
1.587
34.7
0.264
44.1
0.254
-83.4
2300
0.353
138.2
1.537
32.2
0.274
43.3
0.249
-86.6
2400
0.357
135.1
1.487
29.6
0.284
42.3
0.246
-90.8
2500
0.364
132.3
1.446
27.1
0.293
41.0
0.243
-95.6
2600
0.368
129.3
1.403
24.8
0.305
40.4
0.244
-100.0
2700
0.373
126.5
1.366
22.4
0.313
39.2
0.245
-104.3
2800
.377
123.8
1.330
19.9
0.324
38.1
0.250
-109.0
2900
0.383
121.1
1.298
17.9
0.334
36.9
0.255
-112.8
3000
0.388
118.3
1.268
15.7
0.344
35.8
0.260
-116.4
isc Website：www.iscsemi.cn
isc RF Product Specification
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
2SC4571
VCE = 3 V, IC = 3 mA, ZO = 50Ω
S21
S11
Freque.
S12
S22
MHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
100
0.912
-21.6
5.515
157.0
0.039
74.4
0.941
-15.6
200
0.834
-42.0
5.289
140.5
0.068
61.3
0.829
-27.6
300
0.733
-61.8
4.989
127.0
0.088
54.0
0.720
-35.4
400
0.645
-79.5
4.582
115.9
0.102
48.7
0.634
-40.9
500
0.563
-95.8
4.216
106.2
0.111
46.0
0.567
-44.5
600
0.508
-108.6
3.750
98.3
0.119
44.2
0.520
-47.3
700
0.459
-121.1
3.422
91.1
0.126
43.4
0.483
-49.6
800
0.426
-131.5
3.114
85.1
0.134
43.0
0.457
-51.6
900
0.403
-140.9
2.860
79.8
0.140
42.7
0.435
-53.4
1000
0.387
-149.5
2.628
74.7
0.147
43.0
0.418
-55.3
1100
0.374
-157.2
2.441
70.4
0.155
43.2
0.408
-57.2
1200
0.365
-164.3
2.273
66.1
0.161
43.0
0.399
-59.1
1300
0.360
-170.7
2.132
62.3
0.169
43.3
0.390
-60.8
1400
0.359
-176.5
2.007
58.7
0.176
43.6
0.383
-62.6
1500
0.358
177.6
1.899
55.2
0.184
43.7
0.378
-64.5
1600
0.359
172.6
1.801
51.8
0.192
43.8
0.371
-66.4
1700
0.360
167.7
1.720
48.3
0.200
43.6
0.366
-68.5
1800
0.361
163.3
1.648
45.3
0.209
43.6
0.361
-70.6
1900
0.363
158.7
1.582
42.3
0.218
43.4
0.355
-72.9
2000
0.369
154.5
1.513
39.2
0.227
43.1
0.347
-76.1
2100
0.372
150.4
1.462
36.5
0.236
42.9
0.340
-78.8
2200
0.375
146.9
1.409
33.7
0.246
42.4
0.336
-82.3
2300
0.380
143.2
1.366
31.0
0.256
41.8
0.331
-85.3
2400
0.385
139.8
1.323
28.4
0.265
41.4
0.328
-89.4
2500
0.391
136.5
1.287
25.8
0.275
40.3
0.326
-93.8
2600
0.394
133.3
1.250
23.4
0.284
39.8
0.326
-98.0
2700
0.401
130.2
1.215
20.9
0.295
39.0
0.327
-102.2
2800
0.405
127.0
1.183
18.5
0.305
38.2
0.332
-106.2
2900
0.410
124.2
1.156
16.3
0.314
37.4
0.337
-110.2
3000
0.415
121.3
1.130
14.2
0.324
36.5
0.342
-113.8
isc Website：www.iscsemi.cn
8
isc RF Product Specification
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
2SC4571
VCE = 3 V, IC = 1 mA, ZO = 50Ω
S21
S11
Freque.
S12
S22
MHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
100
0.970
_14.8
1.932
163.6
0.042
78.2
0.984
-8.3
200
0.940
_29.4
1.944
149.6
0.079
68.4
0.945
-16.0
300
0.890
_43.9
1.949
137.4
0.109
59.0
0.895
-22.6
400
0.839
_57.5
1.894
127.0
0.132
51.8
0.846
-28.2
500
0.782
_71.0
1.854
117.6
0.149
45.3
0.795
-32.8
600
0.734
_82.5
1.723
108.5
0.161
40.1
0.757
-36.9
700
0.680
_94.1
1.674
100.1
0.168
36.1
0.720
-40.5
800
0.638
_105.2
1.606
92.6
0.174
32.7
0.691
-43.7
900
0.598
_115.4
1.548
85.8
0.177
30.0
0.666
-46.5
1000
0.565
_125.0
1.486
79.4
0.179
28.5
0.646
-49.3
1100
0.541
_133.7
1.422
73.9
0.180
27.2
0.633
-51.8
1200
0.518
_142.1
1.354
68.5
0.179
26.0
0.621
-54.5
1300
0.504
_149.6
1.287
63.6
0.180
25.9
0.610
-56.9
1400
0.494
_156.8
1.235
59.0
0.180
26.0
0.603
-59.3
1500
0.485
_163.5
1.183
54.8
0.179
26.2
0.596
-61.8
1600
0.478
_169.9
1.136
50.8
0.180
27.0
0.590
-64.3
1700
0.476
_175.8
1.098
46.9
0.181
27.5
0.584
-66.9
1800
0.472
178.5
1.054
43.4
0.182
29.1
0.578
-69.6
1900
0.470
173.0
1.019
39.9
0.184
30.4
0.573
-72.3
2000
0.472
167.6
0.987
36.6
0.189
31.9
0.566
-75.6
2100
0.473
162.6
0.952
33.8
0.193
33.5
0.560
-78.9
2200
0.474
158.0
0.922
30.8
0.198
34.5
0.556
-82.5
2300
0.476
153.5
0.897
28.0
0.205
36.1
0.551
-86.1
2400
0.480
149.2
0.866
25.4
0.212
37.3
0.548
-90.2
2500
0.484
144.9
0.846
23.0
0.220
38.3
0.546
-94.5
2600
0.488
141.0
0.823
20.7
0.230
39.3
0.547
-98.9
2700
0.491
137.0
0.801
18.5
0.240
39.9
0.546
-103.1
2800
0.495
133.2
0.781
16.4
0.252
4.02
0.550
-107.3
2900
0.498
129.7
0.763
14.6
0.263
4.04
0.553
-111.3
3000
0.501
125.9
0.745
12.9
0.275
4.05
0.555
-115.2
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