LMBT5087LT3G datasheet(3/7 Pages) LRC

部品番号	LMBT5087LT3G

部品情報	Low Noise Transistor PNP Silicon RoHS requirements.

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メーカー	LRC [Leshan Radio Company]

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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

LMBT5087LT1G

TYPICAL NOISE CHARACTERISTICS

(V

CE = – 5.0 Vdc, T A = 25°C)

f, FREQUENCY (Hz)

Figure 1. Noise Voltage

f, FREQUENCY (Hz)

Figure 2. Noise Current

I

C , COLLECTOR CURRENT (µA)

Figure 3. Narrow Band, 100 Hz

I

C , COLLECTOR CURRENT (µA)

Figure 5. Wideband

I

C , COLLECTOR CURRENT (µA)

Figure 4. Narrow Band, 1.0 kHz

BANDWIDTH = 1.0 Hz

R

S

0

I

C=10 µA

100

µA

30

µA

300

µA

1.0mA

BANDWIDTH = 1.0 Hz

R

S

I

C=1.0mA

300

µA

100

µA

30

µA

BANDWIDTH = 1.0 Hz

NOISE FIGURE CONTOURS

(V

CE = – 5.0 Vdc, T A = 25°C)

10

7.0

5.0

3.0

2.0

1.0

10

20

50

100

200

500

1.0k

2.0k

5.0k

10k

10

20

50

100

200

500

1.0k

2.0k

5.0k

10k

10.0

7.0

5.0

3.0

2.0

1.0

0.7

0.5

0.3

0.2

0.1

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

0.5dB

1.0dB

2.0dB

3.0dB

1.0dB

2.0dB

3.0dB

5.0dB

0.5dB

1.0dB

2.0dB

3.0 dB

5.0dB

10 Hz to 15.7kHz

10

µA

0.5dB

1.0M

500k

200k

100k

50k

20k

10k

5.0k

2.0k

1.0k

500

200

100

1.0M

500k

200k

100k

50k

20k

10k

5.0k

2.0k

1.0k

500

200

100

5.0dB

~

同様の部品番号 - LMBT5087LT3G

メーカー	部品番号	データシート	部品情報
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