Datasheet 2N6255 Datasheet (Microsemi Corporation)

140 COMMERCE DRIVE
MONTGOMERYVILLE, PA
18936-1013
PHONE: [phone]
FAX: [phone]

RF & MICROWAVE DISCRETE
LOW POWER TRANSISTORS

Features

• Silicon NPN, To-39 packaged VHF Transistor

• 3.0 Watt Power Output @ 175 MHz

• Power Gain, G

• Efficiency = 50%

= 7.8 dB

PE

2N6255

1. Emitter

2. Base

3. Collector

TO-39

DESCRIPTION:

Silicon NPN transistor, designed for 12.5 volt VHF equipment. Applications include amplifier; pre-driver, driver, and
output stages. Also suitable for oscillator and frequency-multiplier functions.

ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C)

Symbol Parameter Value Unit

V

CEO

V

CBO

V

EBO

I

C

Collector-Emitter 18 Vdc

Collector-Base Voltage 36 Vdc

Emitter-Base Voltage 4.0 Vdc

Collector Current 1 A

Thermal Data

P

D

Total Device Dissipation @ TA = 25ºC
Derate above 25ºC

5.0

28.5

Watts

mW/ ºC

MSC1306.PDF 10-25-99

ELECTRICAL SPECIFICATIONS (Tcase = 25°C)

STATIC
(off)

Symbol Test Conditions Value

Min. Typ. Max. Unit

BVCES Collector-Emitter Breakdown Voltage

(IC = 5.0 mAdc, VBE =0Vdc) 36 - - Vdc

BVCEO Collector-Emitter Breakdown Voltage

(IC=10 mAdc, IB=0) 18 - - Vdc

BVEBO Emitter-Base Breakdown Voltage

(IE = 1.0 mAdc, IC = 0) 4.0 -

ICES Collector Cutoff Current

(VCE = 15 Vdc, VBE = 0 Vdc) - - 5.0 mA

ICBO Emitter Cutoff Current

(VCB = 15 Vdc, IE = 0) - - .25

2N6255

Vdc

mA

(on)

DYNAMIC

FUNCTIONAL

HFE DC Current Gain

(IC = 250 mAdc, VCE = 5.0 Vdc) 5.0 - -

Symbol Test Conditions Value

COB Output Capacitance

(VCB = 12.5Vdc, f = 1.0 MHz

Symbol Test Conditions Value

G

PE

η

C

Power Gain Test Circuit-Figure 1

Pout = 3.0 W, VCC = 12.5Vdc
f = 175 MHz

Collector Efficiency Test Circuit-Figure 1

Pout = 3.0 W, VCC = 12.5Vdc
f = 175 MHz

-

Min. Typ. Max. Unit

7.8 - - dB

50

15 20 pF

- - %

-

MSC1306.PDF 10-25-99

2N6255

P

IN

(RS=50 OHMS)

C1

C2

L1

RFC1

Bead

RFC2

C5

L2

C6

C4

C3

12.5 Vdc

P

OUT

(RL=50 OHMS)

Figure 1 - 175 MHz RF AMPLIFIER CIRCUIT FOR GPE,

AND EFFICIENCY SPECIFICATIONS.

C1,3: 2.0-50 pF ARCO 461 ELEMENCO C2,4: 5.0-80 pF ARCO 462 ELEMENCO

C5: 1000 pF FEED THRU C6: 5.0 uF
L1: 1 TURN #18 AWG ¼” I.D. L2: 2 1/2 TURNS #18 AWG ¼” I.D
RFC2: 0.15 uH MOLDED CHOKE BEAD: FERROXCUBE 56-570-65/3B

RFC1: 0.15 uH MOLDED CHOKE WITH BEAD ON GROUND LEG

MSC1306.PDF 10-25-99

2N6255

MSC1306.PDF 10-25-99