Document
140 COMMERCE DRIVE MONTGOMERYVILLE, PA 18936-1013 PHONE: (215) 631-9840 FAX: (215) 631-9855
2N2857
RF & MICROWAVE DISCRETE LOW POWER TRANSISTORS
Features
• • • Silicon NPN, To-72 packaged UHF Transistor 1.6 GHz Current-Gain Bandwidth Product @ 5mA IC
2
Maximum Unilateral Gain = 13 dB (typ) @ 500 MHz
1 4
3
1. Emitter 2. Base 3. Collector 4. Case
TO-72
DESCRIPTION:
Silicon NPN transistor, designed for UHF equipment. Applications include low noise amplifier; oscillator, and mixer applications.
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C)
Symbol VCEO VCBO VEBO IC Parameter Collector-Emitter Voltage Collector-Base Voltage Emitter-Base Voltage Collector Current Value 15 30 2.5 40 Unit Vdc Vdc Vdc mA
Thermal Data
P
D Total Device Dissipation @ TA = 25ºC Derate above 25ºC 200 1.14 mWatts mW/ ºC
MSC1066.PDF 3-10-99
2N2857
ELECTRICAL SPECIFICATIONS (Tcase = 25°C)
STATIC (off)
Symbol BVCEO BVCBO BVEBO ICBO Test Conditions Min. Collector-Emitter Breakdown Voltage (IC = 3.0 mAdc, IB = 0) Collector-Base Breakdown Voltage (IC=1.0 µAdc, IE=0) Emitter-Base Breakdown Voltage (IE = 10 µAdc, IC = 0) Collector Cutoff Current (VCE = 15 Vdc, IE = 0 Vdc) 15 30 2.5 Value Typ. Max. .01 Unit Vdc Vdc Vdc µA
(on)
HFE DC Current Gain (IC = 3.0 mAdc, VCE = 1.0 Vdc) 30 150
DYNAMIC
Symbol fT NF Test Conditions Min. Current-Gain - Bandwidth Product (IC = 5.0 mAdc, VCE = 6 Vdc, f = 100 MHz) Noise Figure (50 Ohms) (IC = 1.5 mAdc, VCE = 6 Vdc, f = 500 MHz) Value Typ. 1.6 5.5 Max. Unit GHz dB
MSC1066.PDF 3-10-99
2N2857
FUNCTIONAL
Symbol Test Conditions Min. Maximum Unilateral Gain Maximum Available Gain Insertion Gain
IC = 12 mAdc, VCE = 10Vdc, f = 500 MHz IC = 12 mAdc, VCE = 10Vdc, f = 500 MHz IC = 12 mAdc, VCE = 10Vdc, f = 500 MHz
Value Typ. 13 13.5 10.5 Max. Unit dB dB dB
G
U max
9.5
MAG
2
|S21|
Table 1. Common Emitter S-Parameters, @ VCE = 10 V, IC = 12 mA
f
S11
(MHz)
100 200 300 400 500 600 700 800 900 1000
|S11| 0.457 0.291 0.233 0.212 0.184 0.173 0.192 0.165 0.261 0.083
∠φ -44 -56 -60 -68 -76 -79 -89 -96 -121 149
S21
|S21| 12.49 8.06 5.3 3.88 3.36 2.97 2.39 1.89 2.72 1.27
∠φ 122 101 89 80 80 69 61 57 60 39
S12
|S12| 0.012 0.018 0.024 0.032 0.037 0.043 0.044 0.055 0.068 0.064
∠φ 63 55 81 55 49 46 44 43 29 18
S22
|S22| 0.823 0.712 0.728 0.723 0.711 0.717 0.72 0.731 0.746 0.749
∠φ -23 -35 -46 -60 -73 -86 -100 -115 -131 -148
MSC1066.PDF 3-10-99
2N2857
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MSC1066.PDF 3-10-99
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