2SC4875 Silicon NPN Bipolar Transistor Application TO-92 VHF & UHF wide band amplifire Features • High gain bandwidth product fT = 8.5 GHz typ • High gain, low noise figure PG = 11.5 dB typ, NF = 1.3 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 15 V ——————————————————————————————————————————— Collector to emitter voltage VCEO 9 V ——————————————————————————————————————————— Emitter to base voltage VEBO 1.5 V ——————————————————————————————————————————— Collector current IC 50 mA ——————————————————————————————————————————— Collector power dissipation PC 450 mW ——————————————————————————————————————————— Junction temperature Tj 150 °C ——————————————————————————————————————————— Storage temperature Tstg –55 to +150 °C ——————————————————————————————————————————— 2SC4875 Table 2 Electrical Characteristics (Ta = 25°C) Item Symbol Min Typ Max Unit Test conditions ——————————————————————————————————————————— Collector to base breakdown voltage V(BR)CBO 15 — — V IC = 10 µA, IE = 0 ——————————————————————————————————————————— Collector cutoff current ICBO — — 10 µA VCB = 12 V, IE = 0 ——————————————————————————————— ICEO — — 1 mA VCE = 9 V, RBE = ∞ ——————————————————————————————————————————— Emitter cutoff current IEBO — — 10 µA VEB = 1.5 V, IC = 0 ——————————————————————————————————————————— DC current transfer ratio hFE 50 120 250 VCE = 5 V, IC = 20 mA ——————————————————————————————————————————— Output capacitance Cob — 1.2 1.7 pF VCB = 5 V, IE = 0, f = 1 MHz ——————————————————————————————————————————— Gain bandwidth product fT 5.5 8.5 — GHz VCE = 5 V, IC = 20 mA ——————————————————————————————————————————— Power gain PG 8.5 11.5 — dB VCE = 5 V, IC = 20 mA, f = 900 MHz ——————————————————————————————————————————— Noise figure NF — 1.3 2.5 dB VCE = 5 V, IC = 5 mA, f = 900 MHz ——————————————————————————————————————————— 2SC4875 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 0 150 50 100 Ambient Temperature Ta (°C) 80 40 0 0.1 0.2 200 Collector Output Capacitance Cob (pF) Gain Bandwidth Product f T (GHz) VCE = 5 V 10 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 12 0.5 1 2 5 10 20 Collector Current I C (mA) 1.8 IE = 0 f = 1 MHz 1.6 1.4 1.2 1.0 0.8 0.5 1 2 5 10 20 Collector to Base Voltage V CB (V) 2SC4875 Noise figure vs. collector current Power gain vs. collector current 20 5 VCE = 5V f = 900MHz VCE = 5V f = 900 MHz NF (dB) Power Gain PG (dB) 16 Noise Figure 12 8 4 0 3 2 1 0 1 2 5 10 20 Collector Current I C (mA) 50 S21 parameter vs. collector current 20 |S21 | (dB) VCE = 5V f = 1 GHz 16 12 S 21 Parameter 4 8 4 0 1 2 5 10 20 Collector Current I C (mA) 50 1 5 10 20 2 Collector Current I C (mA) 50 2SC4875 S21 parameter vs. frequency S11 parameter vs. frequency .8 .6 1 Scale: 4 / div. 90° 1.5 120° 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 –60° –90° Condition: VCE = 5 V , Zo = 50 Ω 200 to 2000 MHz (200 MHz step) (I C = 5 mA) (I C = 20 mA) –1.5 –120° Condition: VCE = 5 V , Zo = 50 Ω 200 to 2000 MHz (200 MHz step) (I C = 5 mA) (I C = 20 mA) S22 parameter vs. frequency S12 parameter vs. frequency 90° 120° Scale: 0.1 / 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: V CE = 5 V , Zo = 50 Ω 200 to 2000 MHz (200 MHz step) (I C = 5 mA) (I C = 20 mA) –2 –.6 –.8 –1 –1.5 Condition: VCE = 5 V , Zo = 50 Ω 200 to 2000 MHz (200 MHz step) (I C = 5 mA) (I C = 10 mA) 2SC4875 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 ——————————————————————————————————————————— 200 0.594 –74.3 10.08 126.4 0.0692 57.8 0.697 –42.8 ——————————————————————————————————————————— 400 0.397 –120.6 6.39 101.7 0.0970 51.2 0.462 –58.2 ——————————————————————————————————————————— 600 0.347 –156.9 4.57 86.7 0.119 50.2 0.348 –69.9 ——————————————————————————————————————————— 800 0.351 179.2 3.56 75.5 0.141 50.3 0.310 –80.8 ——————————————————————————————————————————— 1000 0.358 159.6 2.92 66.0 0.165 50.1 0.291 –89.8 ——————————————————————————————————————————— 1200 0.400 146.2 2.47 57.7 0.188 48.8 0.289 –101.7 ——————————————————————————————————————————— 1400 0.405 139.4 2.15 49.1 0.211 46.9 0.323 –110.5 ——————————————————————————————————————————— 1600 0.377 129.4 1.92 41.7 0.236 45.1 0.342 –112.2 ——————————————————————————————————————————— 1800 0.380 115.1 1.75 35.5 0.262 43.5 0.326 –115.8 ——————————————————————————————————————————— 2000 0.380 104.6 1.58 29.0 0.285 40.9 0.324 –123.2 ——————————————————————————————————————————— 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 ——————————————————————————————————————————— 200 0.282 –121.9 14.86 106.5 0.0471 65.9 0.404 –59.9 ——————————————————————————————————————————— 400 0.239 –169.9 8.09 89.6 0.0793 67.5 0.238 –68.4 ——————————————————————————————————————————— 600 0.274 164.3 5.52 79.4 0.112 66.7 0.180 –82.8 ——————————————————————————————————————————— 800 0.302 150.3 4.21 71.0 0.145 64.1 0.178 –97.4 ——————————————————————————————————————————— 1000 0.317 138.5 3.42 63.6 0.178 60.9 0.179 –108.3 ——————————————————————————————————————————— 1200 0.362 129.9 2.88 56.7 0.208 57.3 0.198 –123.1 ——————————————————————————————————————————— 1400 0.367 127.2 2.49 49.6 0.234 53.2 0.245 –129.9 ——————————————————————————————————————————— 1600 0.331 118.9 2.21 43.1 0.265 49.4 0.261 –129.2 ——————————————————————————————————————————— 1800 0.336 106.6 2.00 37.5 0.294 45.9 0.245 –133.3 ——————————————————————————————————————————— 2000 0.340 97.0 1.82 31.7 0.320 41.9 0.244 –141.3 ———————————————————————————————————————————