2SC1344, 2SC1345 Silicon NPN Epitaxial Application Low frequency low noise amplifier Outline TO-92 (1) 1. Emitter 2. Collector 3. Base 3 2 1 2SC1344, 2SC1345 Absolute Maximum Ratings (Ta = 25°C) Item Symbol 2SC1344 2SC1345 Unit Collector to base voltage VCBO 30 55 V Collector to emitter voltage VCEO 30 50 V Emitter to base voltage VEBO 5 5 V Collector current IC 100 100 mA Collector power dissipation PC 200 200 mW Junction temperature Tj 150 150 °C Storage temperature Tstg –55 to +150 –55 to +150 °C Electrical Characteristics (Ta = 25°C) 2SC1344 2SC1345 Item Symbol Min Typ Max Min Typ Max Unit Test conditions Collector to base breakdown voltage V(BR)CBO 30 — — 55 — — V I C = –10 µA, IE = 0 Collector to emitter breakdown voltage V(BR)CEO 30 — — 50 — — V I C = 1 mA, RBE = ∞ Emitter to base breakdown voltage V(BR)EBO 5 — — 5 — — V I E = 10 µA, IC = 0 Collector cutoff current I CBO — — 0.5 — — 0.5 µA VCB =18 V, IE = 0 Emitter cutoff current I EBO — — 0.5 — — 0.5 µA VCB = 2 V, IC = 0 250 — 1200 250 — 1200 Base to emitter voltage VBE — — 0.75 — — 0.75 V VCE = 12 V, IC = 2 mA Collector to emitter saturation voltage — — 0.5 — — 0.5 V I C = 10 mA, IB = 1 mA Gain bandwidth product f T — 230 — — 230 — MHz VCE = 12 V, IC = 2 mA Collector output capacitance Cob — — 3.5 — — 3.5 pF VCB = 10 V, IE = 0, f = 1 MHz Noise figure NF — — 8 — — 8 dB VCE = 6 V, IC = 0.1 mA, f = 10 Hz, Rg = 10 kΩ — — 1 — — 1 dB VCE = 6 V, IC = 0.1 mA, f = 1 kHz, Rg = 10 kΩ DC current transfer ratio hFE* Note: 1 VCE(sat) 1. The 2SC1344 and 2SC1345 are grouped by h FE as follows. D E F 250 to 500 400 to 800 600 to 1200 2 VCE = 12 V, IC = 2 mA 2SC1344, 2SC1345 Small Signal h Parameters (VCE = 5V, IC = 0.1 mA, f = 270 Hz, Ta = 25°C, Emitter common) Item Symbol D E F Unit Input impedance hie 110 170 240 kΩ Voltage feedback ratio hre 9.5 14.5 16 × 10 –4 Current transfer ratio hfe 340 540 825 Output admittance hoe 12.0 12.5 13.5 Typical Output Characteristics P C = 26 20 0m 24 W 22 20 18 16 14 12 10 8 6 4 2 µA IB = 0 Collector Current IC (mA) 10 200 150 100 50 0 8 6 4 2 0 100 150 50 Ambient Temperature Ta (°C) 4 8 12 16 20 Collector to Emitter Voltage VCE (V) DC Current Transfer Ratio vs. Collector Current 5 Collector Current IC (mA) VCE = 12 V 600 500 5°C 7 a= T 400 24 Typical Transfer Characteristics 700 DC Current Transfer Ratio hFE Collector Power Dissipation PC (mW) Maximum Collector Dissipation Curve 250 µS 25 300 200 0.01 0.02 0.05 0.1 0.2 0.5 1.0 2 5 10 20 Collector Current IC (mA) 50 4 VCE = 12 V 3 2 1 0 0.6 0.8 1.0 0.2 0.4 Base to Emitter Voltage VBE (V) 3 2SC1344, 2SC1345 Collector Output Capacitance vs. Collector to Base Voltage Base to Emitter Voltage vs. Ambient Temperature 0.8 Collector Output Capacitance Cob (pF) Base to Emitter Voltage VBE (V) 0.9 VCE = 12 V IC = 2 mA 0.7 0.6 0.5 0.4 –20 0 20 40 60 Ambient Temperature Ta (°C) 10 IE = 0 f= 1 MHz 5 2 1 1 80 Emitter Input Capacitance vs. Emitter to Base Voltage Contours of Constant Noise Figure 100 Signal Source Resistance Rg (kΩ) IC = 0 f= 1 MHz 5 2 1 4 5 2 Emitter to Base Voltage VEB (V) 10 1 dB 10 B d 8 dB 6 dB 4 dB 2 dB 1 Emitter Input Capacitance Cie (pF) 10 1 5 10 2 Collector to Base Voltage VCB (V) dB 30 2 dB 4d 10 B 6d B 3 8 dB 10 dB 1.0 VCE = 6 V f = 10 Hz 0.3 0.1 0.001 0.003 0.01 0.03 0.1 0.3 Collector Current IC (mA) 1.0 3.0 2SC1344, 2SC1345 Contours of Constant Noise Figure Contours of Constant Noise Figure d 6 B 8 dB dB dB 0.3 0.1 0.001 0.003 0.01 0.03 0.1 0.3 1.0 3.0 100 Signal Source Resistance Rg (kΩ) 1.0 dB 3 dB 2 4 VCE = 6 V f = 120 Hz dB 1 10 dB 8 dB 6 dB 4 2 30 1 VCE = 6 V f = 1 kHz 30 4 2 10 1 2 3 4 1 dB dB 10 8 dB 6 dB dB dB dB dB d 6 B d 8 B 10 dB dB 1.0 0.3 0.1 0.001 0.003 0.01 0.03 0.1 0.3 Collector Current IC (mA) Collector Current IC (mA) Noise Figure vs. Frequency Noise Figure vs. Collector to Emitter Voltage 12 1.0 3.0 10 10 VCE = 6 V IC = 0.1 mA Rg = 10 kΩ 8 Noise Figure NF (dB) Noise Figure NF (dB) Signal Source Resistance Rg (kΩ) 100 6 4 2 IC = 0.1 mA f = 10 Hz Rg = 10 kΩ 8 6 4 2 0 0 10 20 50 100 200 Frequency f (Hz) 500 1k 1 2 5 10 20 50 Collector to Emitter Voltage VCE (V) 5 2SC1344, 2SC1345 Noise Figure vs. Collector to Emitter Voltage Noise Figure vs. Collector to Emitter Voltage 10 IC = 0.1 mA f = 120 Hz Rg = 10 kΩ 8 Noise Figure NF (dB) Noise Figure NF (dB) 10 6 4 2 6 4 2 0 0 1 2 5 10 20 Collector to Emitter Voltage VCE (V) 6 IC = 0.1 mA f = 1 kHz Rg = 10 kΩ 8 50 1 2 5 10 20 Collector to Emitter Voltage VCE (V) 50 Unit: mm 4.8 ± 0.3 0.7 0.60 Max 0.5 ± 0.1 12.7 Min 2.3 Max 5.0 ± 0.2 3.8 ± 0.3 0.5 1.27 2.54 Hitachi Code JEDEC EIAJ Weight (reference value) TO-92 (1) Conforms Conforms 0.25 g Cautions 1. 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