2SC4874 Silicon NPN Bipolar Transistor Application TO-92 VHF & UHF wide band amplifire Features • High gain bandwidth product fT = 5.8 GHz typ • High gain, low noise figure PG = 10.0 dB typ, NF = 1.8 dB typ at f = 900 MHz 1. Base 2. Emitter 3. Collector 3 2 1 Table 1 Absolute Maximum Ratings (Ta = 25°C) Item Symbol Ratings Unit ——————————————————————————————————————————— Collector to base voltage VCBO 20 V ——————————————————————————————————————————— Collector to emitter voltage VCEO 12 V ——————————————————————————————————————————— Emitter to base voltage VEBO 2 V ——————————————————————————————————————————— Collector current IC 50 mA ——————————————————————————————————————————— Collector power dissipation PC 600 mW ——————————————————————————————————————————— Junction temperature Tj 150 °C ——————————————————————————————————————————— Storage temperature Tstg –55 to +150 °C ——————————————————————————————————————————— 2SC4874 Table 2 Electrical Characteristics (Ta = 25°C) Item Symbol Min Typ Max Unit Test condition ——————————————————————————————————————————— Collector to base breakdown voltage V(BR)CBO 20 — — V IC = 10 µA, IE = 0 ——————————————————————————————————————————— Collector cutoff current ICBO — — 1 µA VCB = 15 V, IE = 0 ——————————————————————————————— ICEO — — 1 mA VCE = 12 V, RBE = ∞ ——————————————————————————————————————————— Emitter cutoff current IEBO — — 10 µA VEB = 2 V, IC = 0 ——————————————————————————————————————————— DC current transfer ratio hFE 50 120 250 VCE = 5 V, IC = 20 mA ——————————————————————————————————————————— Output capacitance Cob — 1.3 1.8 pF VCB = 5 V, IE = 0, f = 1 MHz ——————————————————————————————————————————— Gain bandwidth product fT 4.0 5.8 — GHz VCE = 5 V, IC = 20 mA ——————————————————————————————————————————— Power gain PG 7.5 10.0 — dB VCE = 5 V, IC = 20 mA, f = 900 MHz ——————————————————————————————————————————— Noise figure NF — 1.8 3.0 dB VCE = 5 V, IC = 5 mA, f = 900 MHz ——————————————————————————————————————————— 2SC4874 DC current transfer ratio vs. collector current Maximum collector power dissipation curve 200 DC Current Transfer Ratio h FE Collector Power Dissipation Pc (mW) 800 VCE = 5V 160 600 120 400 200 0 80 40 0 0.1 0.2 50 100 150 200 Ambient Temperature Ta (°C) Collector Output Capacitance Cob (pF) Gain Bandwidth Product f T (GHz) VCE = 5 V 8 6 4 2 0 1 2 5 10 20 Collector Current I C (mA) 50 50 Collector output capacitance vs. collector to base voltage Gain bandwidth product vs. collector current 10 0.5 1 2 5 10 20 Collector Current I C (mA) 2.0 IE = 0 f = 1 MHz 1.8 1.6 1.4 1.2 1.0 0.5 1 2 5 10 20 Collector to Base Voltage V CB (V) 2SC4874 Noise figure vs. collector current Power gain vs. collector curent 12 5 VCE = 5V f = 900MHz NF (dB) Power Gain PG (dB) 10 8 Noise Figure 6 4 2 VCE = 5V f = 900 MHz 0 20 2 5 10 Collector Current I C (mA) 50 S21 parameter vs. collector current 12 |S21 | (dB) 3 2 1 0 1 VCE = 5V f = 1 GHz 10 S 21 Parameter 4 8 6 4 2 0 1 2 5 10 20 Collector Current I C (mA) 50 1 20 5 10 2 Collector Current I C (mA) 50 2SC4874 S21 parameter vs. frequency S11 parameter vs. frequency .8 .6 1 90° 1.5 Scale: 5 / div. 120° 2 .4 60° 3 4 5 .2 150° 30° 10 .2 0 .4 .6 1 1.5 2 10 3 45 0° 180° –10 –5 –4 –3 –.2 –.4 –30° –150° –2 –.6 –.8 –1 –90° Condition: VCE = 5 V , Zo = 50 Ω 100 to 1000 MHz (100 MHz step) (I C = 5 mA) (I C = 20 mA) Condition: VCE = 5 V , Zo = 50 Ω 100 to 1000 MHz (100 MHz step) (I C = 5 mA) (I C = 20 mA) S22 parameter vs. frequency S12 parameter vs. frequency 90° 120° –60° –120° –1.5 Scale: 0.04 / div. .6 60° .8 1 1.5 2 .4 150° 30° 3 4 5 .2 10 0° 180° .4 .6 .8 1 .2 0 1.5 2 3 45 10 –10 –5 –4 –3 –.2 –30° –150° –.4 –120° –60° –90° Condition: VCE = 5 V , Zo = 50 Ω 100 to 1000 MHz (100 MHz step) (I C = 5 mA) (I C = 20 mA) –2 –.6 –.8 –1 –1.5 Condition: VCE = 5 V , Zo = 50 Ω 100 to 1000 MHz (100 MHz step) (I C = 5 mA) (I C = 20 mA) 2SC4874 Table 3 S Parameter (VCE = 5 V, IC = 5 mA, ZO = 50 Ω, Emitter common) f (MHz) S11 S21 S12 S22 ——————— ——————— ——————— ——————— MAG MAG MAG MAG ANG ANG ANG ANG ——————————————————————————————————————————— 100 0.784 –39.6 12.03 149.8 0.0396 71.3 0.890 –21.4 ——————————————————————————————————————————— 200 0.614 –69.7 9.23 127.0 0.0651 59.5 0.718 –35.3 ——————————————————————————————————————————— 300 0.474 –94.3 7.06 111.6 0.0810 55.0 0.587 –42.3 ——————————————————————————————————————————— 400 0.378 –116.3 5.66 100.6 0.0926 53.3 0.499 –45.3 ——————————————————————————————————————————— 500 0.330 –138.0 4.68 91.9 0.104 53.5 0.435 –48.1 ——————————————————————————————————————————— 600 0.322 –155.5 4.03 85.2 0.116 53.5 0.387 –52.5 ——————————————————————————————————————————— 700 0.320 –169.9 3.52 78.9 0.127 53.8 0.360 –58.2 ——————————————————————————————————————————— 800 0.325 –179.7 3.13 73.8 0.140 54.1 0.353 –63.5 ——————————————————————————————————————————— 900 0.321 168.8 2.81 68.5 0.152 54.4 0.353 –67.3 ——————————————————————————————————————————— 1000 0.326 161.1 2.58 63.8 0.165 54.6 0.348 –69.9 ——————————————————————————————————————————— Table 4 S Parameter (VCE = 5 V, IC = 20 mA, ZO = 50 Ω, Emitter common) f (MHz) S11 S21 S12 S22 ——————— ——————— ——————— ——————— MAG MAG MAG MAG ANG ANG ANG ANG ——————————————————————————————————————————— 100 0.477 –68.2 21.97 130.0 0.0297 66.5 0.686 –35.2 ——————————————————————————————————————————— 200 0.318 –105.4 13.32 108.8 0.0469 65.3 0.468 –44.2 ——————————————————————————————————————————— 300 0.240 –133.3 9.19 97.1 0.0633 66.9 0.372 –44.8 ——————————————————————————————————————————— 400 0.215 –157.6 7.05 89.5 0.0797 67.6 0.318 –44.4 ——————————————————————————————————————————— 500 0.224 –177.3 5.68 83.8 0.0968 67.5 0.276 –45.4 ——————————————————————————————————————————— 600 0.242 170.0 4.81 78.6 0.113 67.2 0.246 –49.5 ——————————————————————————————————————————— 700 0.263 161.0 4.15 74.0 0.130 66.2 0.230 –56.8 ——————————————————————————————————————————— 800 0.270 154.9 3.66 69.7 0.146 65.1 0.231 –63.8 ——————————————————————————————————————————— 900 0.273 147.6 3.27 65.5 0.163 64.1 0.238 –68.4 ——————————————————————————————————————————— 1000 0.291 141.7 2.99 61.8 0.180 62.8 0.237 –71.5 ———————————————————————————————————————————