SV6550C Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – High Performance Audio Beam Power Pentode

SVETLANA TECHNICAL DATA
SV6550C
High Performance Audio Beam
Power Pentode
T he Svetlana™ SV6550C is a glass envelope beam power pentode. It is intended for
ultra linear audio frequency power amplification service. Close manufacturing
specification tolerances and improved processing provide improved reliability and
superior sonic performance. The new SV6550C features: increased peak cathode
emission from new cathode materials; stable operation from extended processing and
aging; gold-plated grid; new tri-plate anode; single-piece beam forming electrode;
precise grid/screen alignment; improved vacuum processing; and comprehensive static
and audio amplifier testing before and after aging.
The Svetlana SV6550C is manufactured in the Svetlana factory in St. Petersburg, Russia,
and is designed to be a direct replacement for any 6550.
Characteristics
Electrical
Heater:
Min.
Nom. Max.
Voltage (AC or DC)
5.7
6.3
6.9
V
Current
1.6
A
Cathode:
Oxide-coated, unipotential
Cathode-to-heater potential, max.
-300*/200** V
Direct interelectrode capacitances, max.***
Grid no.1 to cathode and grid no.3, grid no.2,
base sleeve and heater
18.5 pF
Plate to cathode and grid no.3, grid no.2,
base sleeve and heater
12.5 pF
Grid no.1 to plate (max)
1.1 pF
Mechanical
Operating Position
Any
Base
Large wafer octal 8-pin with metal sleeve
Maximum dimensions:
Height
116 mm (4.57 in.)
Seated height
106 mm (4.173 in.)
Diameter
46 mm (1.81 in.)
Cooling
Convection cooled
Envelope Temperature (max)
250˚C
Approximate net weight
AF Power Amplifier, Maximum ratings
100 g (3.5 oz.)
DC plate voltage
680 V
Grid no.2 DC (screen) voltage
400 V
Grid no.1 (control) voltage
-300 V
DC cathode current
175 mA
Plate dissipation
35 W
Grid no.2 (screen) dissipation
*Max with heater negative to cathode
**Max with heater positive to cathode
***Without external shielding
6W
Svetlana Outline drawing
2.05" max
4.72" max
4.17" max
1.77" max
Bottom View
G2
G1
4
5
P3
2
H
1
External shield
around base
7
H
8
C,BP
Svetlana