ETC VTV300

VTV300
30 Watts, 25 Volts
VHF Television - Band III
GENERAL DESCRIPTION
CASE OUTLINE
The VTV 300 is a COMMON EMITTER transistor capable of providing 30
Watts Peak, Class A, RF Output Power over the band 175 - 225 MHz. It is
designed for high efficiency, high linerity, Class A operation. Gold
Metalization and Diffused Ballasting are used to provide high reliability and
supreme ruggedness.
55HV, STYLE 1
ABSOLUTE MAXIMUM RATINGS
Maximum Power Dissipation @ 25oC
146 Watts
Maximum Voltage and Current
BVces
Collector to Emitter Voltage
BVceo Collector to Emitter Voltage
BVebo Emitter to Base Voltage
Ic
Collector Current
45 Volts
25 Volts
4.0 Volts
14 Amps
Maximum Temperatures
Storage Temperature
Operating Junction Temperature
- 65 to + 150oC
+ 200oC
ELECTRICAL CHARACTERISTICS @ 25 OC
SYMBOL
CHARACTERISTICS
TEST
CONDITIONS
Pout
Pin
Pg
η
IMD1
VSWR1
Power Out - Pk Sync1
Power Input
Power Gain
Efficiency
Intermodulation Distortion
Load Mismatch Tolerance
Pref = 7.5 Watts
F = 225 MHz
LVceo
BVces
BVebo
hFE
Cob
θjc
Collector to Emitter Breakdown
Collector to Base Breakdown
Emitter to Base Breakdown
Current Gain
Output Capacitance
Thermal Resistance
Ic = 25 mA
Ic = 100mA
Ie = 10 mA
Vce = 5 V, 1mA
Vcb = 25V, F=1MHz
Tc = 25oC
F = 175-225 MHz
Vcc = 25 Volts
Ic = 5.0 Amps
MIN
TYP
30
35
5
7
30
-50
6
MAX
UNITS
Watts
Watts
dB
%
dB
3:1
28
45
4.0
10
Volts
Volts
Volts
40
135
1.0
1.2
o
pF
C/W
Note 1: European three tone test method: Vision carrier -8dB, sound carrier -7dB, sideband signal -16 dB, 0 dB
corresponds to peak sync level.
Issue October 1997
GHz TECHNOLOGY INC. RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE. GHz RECOMMENDS THAT BEFORE
THE PRODUCT(S) DESCRIBED HEREIN ARE WRITTEN INTO SPECIFICATIONS, OR USED IN CRITICAL APPLICATIONS, THAT THE
PERFORMANCE CHARACTERISTICS BE VERIFIED BY CONTACTING THE FACTORY.
GHz Technology Inc. 3000 Oakmead Village Drive, Santa Clara, CA 95051-0808 Tel. 408 / 986-8031 Fax 408 / 986-8120
VTV 300
August 1996
VTV- 300
VTV-300 RF Test Circuit (Tunable 175-225 MHz)
Recommended Bias: VCE=25V, IC=5.0 A (DC Bias not shown)
R4
R2
VC
VB
L8
C12
C11
L9
C15 C16
C13 C14
C17 C18
C5
L5
L2
C2
L4
L3
L1
C1
C3
C4
C7
C6
C1, C10, C11, C18........ 220pf ceramic chip
C2.................................. 5-70pf compression mica
C3, C7........................... 11-170pf compression mica
C4, C5, C6..................... 68 pf ceramic chip
C8, C9........................... 4-40pf compression mica
C12, C17....................... 390 ceramic chip
C13, C16....................... 1mf electrolytic
C14, C15....................... 50 mf electrolytic
L1................................. Copper strap 1,20" x .10" x .025"
L7
L6
Q1
C8
C10
C9
L2..................... 0.1 nH wire wound
L3..................... 50 W line .925" long
L4..................... 50 W line .465" long
L5..................... 5 turns #24 wire, .12" I.D.
L6..................... Copper strap 1.10" x .15" x .075"
L7..................... 50 W line .960" long
L8, L9................ 9 turns #22 wire on F627-8 Q1 torroid
R1, R2............... 15 W 1/2 watt carbon (10%)
Board Material is 1/16" Teflon Fiberglass.
August 1996