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2SC4994

Hitachi Semiconductor
Part Number 2SC4994
Manufacturer Hitachi Semiconductor
Description NPN TRANSISTOR
Published Apr 3, 2005
Detailed Description 2SC4994 Silicon NPN Epitaxial ADE-208-012 1st. Edition Application VHF / UHF wide band amplifier Features • High gain...
Datasheet PDF File 2SC4994 PDF File

2SC4994
2SC4994


Overview
2SC4994 Silicon NPN Epitaxial ADE-208-012 1st.
Edition Application VHF / UHF wide band amplifier Features • High gain bandwidth product fT = 10.
5 GHz Typ • High gain, low noise figure PG = 17.
0 dB Typ, NF = 1.
2 dB Typ at f = 900 MHz Outline CMPAK–4 2 3 4 1 1.
Collector 2.
Emitter 3.
Base 4.
Emitter 2SC4994 Absolute Maximum Ratings (Ta = 25°C) Item Collector to base voltage Collector to emitter voltage Emitter to base voltage Collector current Collector power dissipation Junction temperature Storage temperature Symbol VCBO VCEO VEBO IC PC Tj Tstg Ratings 15 8 1.
5 20 100 150 –55 to +150 Unit V V V mA mW °C °C Electrical Characteristics (Ta = 25°C) Item Collector cutoff current Symbol I CBO I CEO Emitter cutoff current DC current transfer ratio Collector output capacitance Gain bandwidth product Power gain Noise figure Note: Marking is “YS–”.
I EBO hFE Cob fT PG NF Min — — — 50 — 7.
5 14.
0 — Typ — — — 120 0.
4 10.
5 17.
0 1.
2 Max 10 1 10 250 0.
75 — — 2.
5 pF GHz dB dB Unit µA mA µA Test conditions VCB = 15 V, IE = 0 VCE = 8 V, RBE = ∞ VEB = 1.
5 V, IC = 0 VCE = 5 V, IC = 10 mA VCB = 5 V, IE = 0, f = 1 MHz VCE = 5 V, IC = 10 mA VCE = 5 V, IC = 10 mA, f = 900 MHz VCE = 5 V, IC = 5 mA, f = 900 MHz Attention: This device is very sensitive to electro static discharge.
It is recommended to adopt appropriate cautions when handling this transistor.
2 2SC4994 DC Current Transfer Ratio vs.
Collector Current 200 DC Current Transfer Ratio h FE Maximum Collector Dissipation Curve Collector Power Dissipation PC (mW) 120 100 80 60 40 20 160 VCE = 5V 120 80 VCE = 1V 40 0 50 100 150 Ambient Temperature Ta (°C) Gain Bandwidth Product vs.
Collector Current 0 0.
1 0.
2 0.
5 1 2 5 10 20 50 Collector Current I C (mA) Collector Output Capacitance vs.
Collector to Base Voltage Collector Output Capacitance Cob (pF) 0.
52 IE = 0 0.
48 f = 1 MHz f T (GHz) 12 VCE = 5 V 10 8 6 4 2 0 1 2 5 10 20 Collector Current I C (mA) 50 VCE = 1 V Gain Bandwidth Product 0.
44 0.
40 0.
36 0.
32 ...


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