4.92"

5.51"

2.05"

Svetlana 6AS7

Dual Power Triode for

High Performance Audio Applications

he Svetlana™ 6AS7 is a glass envelope, dual power triode with high

transconductance and high plate current capacity. Each triode has a plate dissipa-

tion 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 perfor-

mance audio circuits. Close manufacturing specification tolerances and improved process-

ing 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.

Nom.

Max.

Voltage (AC or DC)

5.7

6.3

6.9

V

Current

2.5

A

Cathode:

Oxide-coated, unipotential

Cathode-to-heater potential, max.

± 300

V

Direct interelectrode capacitances, max.***

Grid to cathode

8

pF

Plate to cathode

3

pF

Grid no.1 to plate

11

pF

Mechanical

Operating Position**

Any

Base

JEDEC 8BD, octal 8-pin

Maximum dimensions:

Height

140 mm (5.51 in.)

Diameter

52 mm (2.05 in.)

Cooling

Convection

Approximate net weight

90g (3.2 oz.)

**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

250

V

Transconductance (typical)

5500

µS

Grid no.1 (control) voltage

-150

V

DC cathode current

130

mA

Plate Resistance

280

Ω

Plate dissipation

13

W

Bulb temperature (surface hottest point)

250˚

C

ELECTRON DEVICES

Svetlana

8/96

Svetlana 6AS7 Outline Drawing

Bottom View

Octal Base Connections

T

4

3

2

1

8

7

6

5

Key

2K

1G

1P

2P

2G

1K

H

H

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

ELECTRON DEVICES

Svetlana

6AS7

Made in Russia