2SC4906 Silicon NPN Bipolar Transistor Application CMPAK VHF & UHF wide band amplifire Features 3 1 • High gain bandwidth product fT = 5.8 GHz typ • High gain, low noise figure PG = 12.0 dB typ, NF = 1.6 dB typ at f = 900 MHz 2 1. Emitter 2. Base 3. Collector 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 100 mW ——————————————————————————————————————————— Junction temperature Tj 150 °C ——————————————————————————————————————————— Storage temperature Tstg –55 to +150 °C ——————————————————————————————————————————— 2SC4906 Table 2 Electrical Characteristics (Ta = 25°C) Item Symbol Min Typ Max Unit Test conditions ——————————————————————————————————————————— 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 — 0.9 1.4 pF VCB = 5 V, IE = 0, f = 1 MHz ——————————————————————————————————————————— Gain bandwidth product fT 4 5.8 — GHz VCE = 5 V, IC = 20 mA ——————————————————————————————————————————— Power gain PG 9.5 12.0 — dB VCE = 5 V, IC = 20 mA, f = 900 MHz ——————————————————————————————————————————— Noise figure NF — 1.6 3.0 dB VCE = 5 V, IC = 5 mA, f = 900 MHz ——————————————————————————————————————————— Marking for 2SC4906 is “YN–”. 2SC4906 DC current transfer ratio vs. collector current Maximum collector power dissipation curve 200 DC Current Transfer Ratio h FE Collector Power Dissipation Pc (mW) 200 VCE = 5V 160 150 120 100 50 0 50 100 150 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 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) 1.6 IE = 0 f = 1 MHz 1.4 1.2 1.0 0.8 0.6 0.5 1 2 5 10 20 Collector to Base Voltage V CB (V) 2SC4906 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 3 2 1 0 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 20 5 10 2 Collector Current I C (mA) 50 2SC4906 S21 parameter vs. frequency Scale: 5 / div. 90° 120° 60° S11 parameter vs. frequency .8 .6 1 1.5 2 .4 3 150° 4 5 .2 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. .8 .6 60° 1 1.5 2 .4 150° 30° 3 4 5 .2 10 0° 180° .2 0 .4 .6 .8 1 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) 2SC4906 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 0.813 –37.6 12.67 153.5 0.0354 71.0 0.912 –19.4 ——————————————————————————————————————————— 200 0.693 –69.6 10.22 132.5 0.0587 57.7 0.756 –32.9 ——————————————————————————————————————————— 300 0.591 –93.5 8.04 118.3 0.0727 51.0 0.623 –39.9 ——————————————————————————————————————————— 400 0.534 –111.3 6.54 108.7 0.0812 48.7 0.536 –43.6 ——————————————————————————————————————————— 500 0.492 –124.9 5.44 101.4 0.0880 48.2 0.477 –45.6 ——————————————————————————————————————————— 600 0.471 –135.5 4.66 95.8 0.0943 48.8 0.437 –46.6 ——————————————————————————————————————————— 700 0.453 –144.9 4.07 91.0 0.100 49.9 0.408 –47.5 ——————————————————————————————————————————— 800 0.445 –153.1 3.61 86.5 0.107 51.2 0.388 –48.7 ——————————————————————————————————————————— 900 0.438 –160.1 3.25 82.6 0.114 52.9 0.373 –49.7 ——————————————————————————————————————————— 1000 0.429 –166.4 2.96 79.2 0.120 54.3 0.362 –50.9 ——————————————————————————————————————————— 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 0.583 –68.6 24.42 135.9 0.0274 63.1 0.741 –34.5 ——————————————————————————————————————————— 200 0.463 –108.7 15.65 114.4 0.0399 57.0 0.502 –46.7 ——————————————————————————————————————————— 300 0.416 –132.2 10.99 103.4 0.0500 59.1 0.382 –49.6 ——————————————————————————————————————————— 400 0.396 –147.6 8.46 96.8 0.0596 61.8 0.320 –49.8 ——————————————————————————————————————————— 500 0.388 –156.9 6.85 91.9 0.0699 63.3 0.285 –49.3 ——————————————————————————————————————————— 600 0.385 –163.6 5.77 87.9 0.0798 65.3 0.263 –48.9 ——————————————————————————————————————————— 700 0.379 –170.3 4.97 84.5 0.0908 66.6 0.249 –49.1 ——————————————————————————————————————————— 800 0.383 –175.8 4.37 81.2 0.102 67.4 0.238 –49.2 ——————————————————————————————————————————— 900 0.389 179.2 3.92 78.1 0.113 68.1 0.231 –49.8 ——————————————————————————————————————————— 1000 0.380 174.7 3.55 75.6 0.123 68.4 0.226 –51.2 ———————————————————————————————————————————