MPS5179

2

Motorola Small–Signal Transistors, FETs and Diodes Device Data

Characteristic

Symbol

Min

Max

Unit

SMALL– SIGNAL CHARACTERISTICS

Current – Gain — Bandwidth Product(1)

(IC = 5.0 mAdc, VCE = 6.0 Vdc, f = 100 MHz)

fT

900

2000

MHz

Collector–Base Capacitance

(VCB = 10 Vdc, IE = 0, f = 0.1 to 1.0 MHz)

Ccb

—

1.0

pF

Small Signal Current Gain

(IC = 2.0 mAdc, VCE = 6.0 Vdc, f = 1.0 kHz)

hfe

25

300

—

Collector Base Time Constant

(IE = 2.0 mAdc, VCB = 6.0 Vdc, f = 31.9 MHz)

rb

′Cc

3.0

14

ps

Noise Figure (See Figure 1)

(IC = 1.5 mAdc, VCE = 6.0 Vdc, RS = 50 ohms, f = 200 MHz)

NF

—

5.0

dB

Common–Emitter Amplifier Power Gain (See Figure 1)

(VCE = 6.0 Vdc, IC = 5.0 mAdc, f = 200 MHz)

Gpe

15

—

dB

1. fT is defined as the frequency at which |hfe| extrapolates to unity.

DC

COMMON

TYPE

1N3195

TYPE

1N3195

1200

91

FROM 50

Ω

SOURCE

1.0 – 5.0

L3

EXTERNAL

SHIELD

L2

2.0 – 10

C7

TO 50

Ω

LOAD

2.0 – 10

C6

0.1

µF

0.001

µF

RFC

1.0

µH

0.1

µF

1200

+VCC

10 k

1200

–VEE

Cin

3.0 – 35

C2

2.0 – 10

L1

0.02

µF

Figure 1. 200 MHz Amplifier Power Gain

and Noise Figure Circuit

L1 1–3/4 Turns, #18 AWG, 0.5

″ L, 0.5″ Diameter

L2 2 Turns, #16 AWG, 0.5

″ L, 0.5″ Diameter

L3 2 Turns, #13 AWG, 0.25

″ L, 0.5″ Diameter (Position 1/4″ from L2)

Q