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BCWALT1 Datasheet(PDF) 3 Page - Leshan Radio Company

Part # BCWALT1
Description  General Purpose Transistors(NPN Silicon)
PDF  6 Pages
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Manufacturer  LRC [Leshan Radio Company]
Direct Link  http://www.lrc.cn/
Logo LRC - Leshan Radio Company

BCWALT1 Datasheet(HTML) 3 Page - Leshan Radio Company

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LESHAN RADIO COMPANY, LTD.
M9–3/6
Noise Figure is Defined as:
NF = 20 log
10 ( –––––––––––––––)
1/ 2
e
n = Noise Voltage of the Transistor referred to the input. (Figure 3)
I
n
= Noise Current of the Transistor referred to the input. (Figure 4)
K
= Boltzman’s Constant (1.38 x 10 –23 j/°K)
T
= Temperature of the Source Resistance (°K)
R
s = Source Resistance ( Ω )
e n 2 +4KTR
S +I n
2 R
S
2
4KTR
S
TYPICAL NOISE CHARACTERISTICS
(V
CE = 5.0 Vdc, T A = 25°C)
f, FREQUENCY (Hz)
Figure 3. Noise Voltage
f, FREQUENCY (Hz)
Figure 4. Noise Current
BANDWIDTH = 1.0 Hz
R
S
0
I
C= 1.0mA
100
µA
30
µA
30
µA
BANDWIDTH = 1.0 Hz
R
S
I
C=1.0mA
300
µA
100
µA
30
µA
BANDWIDTH = 1.0 Hz
BANDWIDTH = 1.0 Hz
NOISE FIGURE CONTOURS
(V
CE = 5.0 Vdc, T A = 25°C)
20
10
7.0
5.0
3.0
2.0
10
20
50
100
200
500
1.0k
2.0k
5.0k
10 k
10
20
50
100
200
500
1.0k
2.0k
5.0k
10 k
100
50
20
10
5.0
2.0
1.0
0.5
0.2
0.1
500k
200k
100k
50k
20k
10k
5.0k
2.0k
1.0k
500
200
100
50
1.0M
500k
200k
100k
50k
20k
10k
5.0k
2.0k
1.0k
500
200
100
10
20
30
50
70
100
200
300
500 700 1.0K
10
20
30
50
70
100
200
300
500 700 1.0K
10
20
30
50
70
100
200
300
500 700 1.0K
2.0 dB
3.0 dB 4.0dB
6.0 dB
10 dB
2.0 dB
3.0dB
5.0 dB
8.0 dB
1.0 dB
2.0 dB
3.0 dB
5.0 dB
8.0 dB
10 Hz to 15.7Hz
10
µA
1.0 dB
500k
200k
100k
50k
20k
10k
5.0k
2.0k
1.0k
500
200
100
50
BCW60ALT1 BCW60BLT1 BCW60DLT1
I
C , COLLECTOR CURRENT (µA)
Figure 5. Narrow Band, 100 Hz
I
C , COLLECTOR CURRENT (µA)
Figure 7. Wideband
I
C , COLLECTOR CURRENT (µA)
Figure 6. Narrow Band, 1.0 kHz
~
~
~
~
10
µA



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