2SC4904 Silicon NPN Bipolar Transistor Application MPAK VHF & UHF wide band amplifire 3 Features 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 150 mW ——————————————————————————————————————————— Junction temperature Tj 150 °C ——————————————————————————————————————————— Storage temperature Tstg –55 to +150 °C ——————————————————————————————————————————— 2SC4904 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 — — 10 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 — 0.8 1.2 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 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 2SC4904 is “YM–”. 2SC4904 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 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) 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) 2SC4904 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 2SC4904 S21 parameter vs. frequency S11 parameter vs. frequency .8 .6 1 90° 1.5 Scale: 6 / div. 120° 2 .4 60° 3 4 5 .2 150° 30° 10 .2 0 .4 .6 1 1.5 2 3 45 10 0° 180° –10 –5 –4 –3 –.2 –.4 –30° –150° –2 –.6 –.8 –1 –90° Condition: VCE = 5 V , Zo = 50 Ω 100 MHz to 1000 MHz (100 MHz step) (I C = 5 mA) (I C = 20 mA) Condition: VCE = 5 V , Zo = 50 Ω 100 MHz 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 MHz 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 MHz to 1000 MHz (100 MHz step) (I C = 5 mA) (I C = 20 mA) 2SC4904 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 0.797 –36.3 12.71 152.4 0.0337 71.8 0.909 –18.8 ——————————————————————————————————————————— 200 0.664 –66.5 10.16 132.3 0.0565 59.7 0.755 –31.0 ——————————————————————————————————————————— 300 0.545 –90.0 8.01 118.2 0.0708 53.9 0.630 –37.3 ——————————————————————————————————————————— 400 0.483 –107.1 6.49 108.7 0.0801 51.3 0.545 –40.3 ——————————————————————————————————————————— 500 0.438 –121.7 5.43 101.5 0.0883 50.7 0.488 –41.5 ——————————————————————————————————————————— 600 0.407 –133.6 4.67 95.6 0.0953 51.3 0.449 –42.1 ——————————————————————————————————————————— 700 0.395 –143.5 4.09 90.8 0.102 52.9 0.420 –42.1 ——————————————————————————————————————————— 800 0.386 –152.3 3.63 86.4 0.110 53.7 0.401 –42.2 ——————————————————————————————————————————— 900 0.378 –161.2 3.26 82.6 0.117 55.2 0.383 –41.6 ——————————————————————————————————————————— 1000 0.374 –168.2 2.97 78.9 0.124 56.1 0.370 –41.4 ——————————————————————————————————————————— 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 0.541 –64.4 24.01 134.3 0.0257 65.7 0.732 –32.1 ——————————————————————————————————————————— 200 0.414 –102.6 15.27 114.2 0.0402 60.6 0.510 –42.0 ——————————————————————————————————————————— 300 0.358 –127.4 10.78 103.5 0.0513 61.9 0.400 –43.6 ——————————————————————————————————————————— 400 0.335 –142.7 8.31 96.9 0.0621 63.2 0.343 –43.3 ——————————————————————————————————————————— 500 0.326 –154.1 6.73 92.0 0.0727 64.9 0.309 –42.0 ——————————————————————————————————————————— 600 0.325 –163.4 5.69 87.9 0.0840 66.0 0.288 –40.9 ——————————————————————————————————————————— 700 0.321 –170.7 4.93 84.3 0.0948 67.0 0.274 –39.7 ——————————————————————————————————————————— 800 0.328 –176.7 4.35 80.9 0.106 67.4 0.264 –38.3 ——————————————————————————————————————————— 900 0.332 176.7 3.88 77.8 0.118 68.0 0.257 –36.8 ——————————————————————————————————————————— 1000 0.332 172.1 3.53 75.2 0.129 67.8 0.252 –35.0 ———————————————————————————————————————————