Download Svetlana 6AS7

Svetlana 6AS7
Dual Power Triode for
High Performance Audio Applications
T
he Svetlana™ 6AS7 is a glass envelope, dual power triode with high
transconductance and high plate current capacity. Each triode has a plate dissipation rating of 13 Watts with convection cooling. It is intended for low distortion
audio frequency power amplification service in either single or push-pull/parallel tube
applications. The Svetlana 6AS7 has an indirectly-heated unipotential cathode. The heater
may be DC operated for the absolute best hum/noise performance.
The Svetlana 6AS7A was originally designed as a series pass tube in regulated power
supplies. Low plate resistance makes it an excellent choice in OTL and other high performance audio circuits. Close manufacturing specification tolerances and improved processing provides enhanced reliability and superior sonic performance.
The Svetlana 6AS7 is manufactured in the Svetlana factory in Russia, and is designed to
be a direct replacement for any 6AS7.
General Characteristics
Electrical
Heater:
Min.
Voltage (AC or DC)
5.7
Current
Cathode:
Cathode-to-heater potential, max.
Direct interelectrode capacitances, max.***
Grid to cathode
Plate to cathode
Grid no.1 to plate
Mechanical
Operating Position**
Base
Maximum dimensions:
Height
Diameter
Cooling
Approximate net weight
Svetlana 6AS7 Outline Drawing
Nom.
Max.
6.3
6.9
V
2.5
A
Oxide-coated, unipotential
± 300
V
8
3
11
2.05"
pF
pF
pF
Any
JEDEC 8BD, octal 8-pin
5.51"
Svetlana
ELECTRON DEVICES
140 mm (5.51 in.)
52 mm (2.05 in.)
Convection
90g (3.2 oz.)
4.92"
6AS7
Made in Russia
**When mounting horizontally, pins 1 & 8 must be in the same horizontal plane
***Without external shielding, nominal values
AF Power Amplifier
Maximum ratings (per triode)
DC plate voltage
Transconductance (typical)
Grid no.1 (control) voltage
DC cathode current
Plate Resistance
Plate dissipation
Bulb temperature (surface hottest point)
250
5500
-150
130
280
13
250˚
V
µS
V
mA
Ω
W
C
Bottom View
Octal Base Connections
1G
4
1P
5
2K
6
3
Svetlana
ELECTRON DEVICES
Headquarters:
8200 South Memorial Parkway
Huntsville, AL 35802
USA
Phone
205 882 1344
FAX
205 880 8077
www.svetlana.com
Marketing & Engineering:
3000 Alpine Road
Portola Valley, CA 94028
USA
Phone
415 233 0429
FAX
415 233 0439
2P 2
1K
7 H
1
2G
8
Key
H
8/96
Svetlana 6AS7
Svetlana 6AS7
Filament = 6.3 Volts
Dual Power Triode for
High Performance Audio
Applications
Typical Characteristics
(for each triode)
200
Vp=180
150
Typical Operation, Audio Power Amplifier, Class A,
Two Triodes, Push Pull
Plate voltage
Zero signal plate current
Max signal plate current
Cathode resistor (each triode)
Peak grid to grid AF signal
Effective Load resistance
Power output
150
250
80
110
1250
250
6000
10
V
mA
mA
Ohms
Vp-p
Ohms
W
100
50
0
-140
-100
-120
-80
-60
-20
-40
0
GRID 1 VOLTAGE (VOLTS)
+10
Vg = 0v
-10
-20
-30
-40
-50
-60
250
Filament = 6.3 Volts
-70
200
PLATE CURRENT, mA (Ip)
Svetlana 6AS7
Typical Characteristics
(for each triode)
-80
-90
150
-100
-110
-120
100
-130
-140
-150
50
Svetlana
ELECTRON DEVICES
0
0
100
200
PLATE VOLTAGE (Vp)
300
PLATE CURRENT (MILLIAMPERES)
120 90