8986 Datasheet PDF - BURLE
| Part Number | 8986 | |
| Description | Beam Power Tube | |
| Manufacturers | BURLE | |
| Logo |  |
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8986
Power Tube
Beam Power Tube
- FM Broadcast Service
15 kW Output
20 dB Gain
80% Efficiency
- High Efficiency-Low Pressure Radiator
The BURLE 8986 is designed specifically for use in high-gain,
high-efficiency FM service.
Rated for full input to 150 MHz, the tube is easily circuited to this
frequency. The terminals are coaxial for operation in the TEM
mode and the radiator location avoids restriction of the resonant
cavity circuits in VHF operation.
Its sturdy, coaxial construction and thoriated-tungsten mesh
filament minimize tube inductances and feed-thru capacitances.
They make possible the use of simple, economical, broadband
circuit techniques in VHF operation.
This data sheet gives application information unique to
the BURLE 8986. It is to be used in conjunction with the
publication, “Application Guide for BURLE Power Tubes”,
TP-105, for general application information for tubes of
this type.
Additional information of a general nature applicable to tubes of
this type is given in the following publications:
TP-105 Application Guide for BURLE Power Tubes
TP-122 Screen-Grid Current, Loading and Bleeder Considera-
tions
TP-117 Handling and Operating Considerations When Using
BURLE Tetrodes
TP-118 Application Guide for Forced Air Cooling BURLE Power
Tubes
Close attention to the instructions contained in these publica-
tions will assure longer tube life, safer operation, less equipment
downtime and fewer tube handling accidents. For copies of
these publications, specific information or application assis-
tance, contact your nearest BURLE Representative or write
BURLE INDUSTRIES INC., New Holland Avenue, Lancaster, PA
17601.
General Data
Electrical
All voltages referenced to cathode, unless otherwise specified.
Filamentary Cathode, Thoriated-Tungsten Mesh Type:
Voltage (ac or dc) ........................................................ See Note 1
Current:
Typical value at 11 .0 volts2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
A
Maximum value for starting,
even momentarily 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .220
A
Cold resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.01 ohm
Recommended heating time3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 sec
Mu-Factor4, (Grid No.2 to grid No.1) ................................ 11
Direct Interelectrode Capacitances:
pF
Grid No.1 to filament . . . . . . . . . . . . . . . . . . . .......................... 85
Plate to filament5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1
pF
pF
Grid No.1 to grid No.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 pF
Grid No. 2 to plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Grid No. 2 to filament6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2
pF
pF
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| |
 
PLATE CORE TEMPERATURE
MEASUREMENT POINT
Q
Figure 4 - Dimensional Outline
Tabulated Dimensions
Dimensions
A Dia. 1
B Dia.1
C Dia.1
D Dia.1
E Dia.1
F
G
Millimeters
179.20 ± 1.02
76.91 ± -0.36
58.90 ± 0.30
46.99 ± 0.30
30.48 ± 0.25
199.39 max.
184.15 max.
Inches
7.055 ± .040
3.028 ± .014
2.319 ± .012
1.850 ± .012
1.200 ±- .010
7.850 max.
7.250 max.
H
61.60 ± 2.54
2.425 ± .100
J
18.42 ± 1.02
0.725 ± .040
K
12.70 ± 0.76
0.500 ± .030
M
5.08 ± 0.64
0.200 ± .025
N
5.59 min.
0.220 min.
P
57.15 ref.
2.250 ref.
Q
38.10 ref.
1.500 ref.
R Dia.
75.56 ref.
2.975 ref.
S
T Dia1
6.35 min.
15.90 ± 0.25
0.250 min.
0.625 ± .010
U
14.60 ± 0.64
0.575 ± .025
V
5.08 min.
0.200 min.
Note 1 - The diameter of each terminal is maintained only over the
indicated minimum length of its contact surface.
Note 2 - Keep all stippled regions clear. In general, do not allow
contacts to protrude into these annular regions. If special
connectors are required which may intrude on these regions
contact BURLE Power Tube Applications Engineering, Lan-
caster, PA.
Note 3 - Contact must be made on both diameters E and T.
-5-
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for 8986 electronic component. |
| Information | Total 6 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ 8986.PDF Datasheet ] | |
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