2SC458, 2SC2308 Silicon NPN Epitaxial Application • Low frequency amplifier • Complementary pair with 2SA1029 and 2SA1030 Outline TO-92 (1) 1. Emitter 2. Collector 3. Base 3 2 1 2SC458, 2SC2308 Absolute Maximum Ratings (Ta = 25°C) Item Symbol 2SC458 2SC2308 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 Emitter current IE –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 2 2SC458, 2SC2308 Electrical Characteristics (Ta = 25°C) 2SC458 2SC2308 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 VEB = 2 V, IC = 0 100 — 500 100 — 320 — — 0.2 — — 0.2 V I C = 10 mA, IB = 1 mA Base to emitter voltage VBE — 0.67 0.75 — 0.67 0.75 V VCE = 12 V, IC = 2 mA Gain bandwidth product f T — 230 — — 230 — MHz VCE = 12 V, IC = 2 mA Collector output capacitance Cob — 1.8 3.5 — 1.8 3.5 pF VCB = 10 V, IE = 0, f = 1 MHz Noise figure NF — 4 10 — 4 10 dB VCE = 6 V, IC = 0.1 mA, f = 1 kHz, Rg = 500 Ω Small signal input impedance hie — 16.5 — — 16.5 — kΩ VCE = 5V, IC = 0.1mA, f = 270 Hz Small signal voltage feedback ratio hre — 70 — — 70 — × 10 –6 Small signal current trancefer ratio hfe — 130 — — 130 — Small signal output admittance hoe — 11.0 — — 11.0 — DC current transfer ratio hFE* Collector to emitter saturation voltage Note: 1 VCE(sat) VCE = 12 V, IC = 2 mA µS 1. The 2SC458 and 2SC2308 are grouped by h FE as follows. B C D 2SC458 100 to 200 160 to 320 250 to 500 2SC2308 100 to 200 160 to 320 — See characteristic curves of 2SC458 (LG) and 2SC2310 except for the followings. 3 2SC458, 2SC2308 Noise Figure vs. Frequency 20 300 16 Noise Figure NF (dB) Collector Power Dissipation PC (mW) Maximum Collector Dissipation Curve 200 100 IC = 0.1 mA Rg = 500 Ω VCE = 6 V 12 8 4 0 50 100 150 Ambient Temperature Ta (°C) 0 30 100 300 1k 3k Frequency f (Hz) Noise Figure vs. Collector to Emitter Voltage Noise Figure NF (dB) 8 IC = 0.1 mA Rg = 500 Ω f = 1kHz 6 4 2 0 1 4 2 5 10 20 Collector to Emitter Voltage VCE (V) 30 10k 30k 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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