What is the 6336A vacuum tube?

The 6336A is a triode vacuum tube designed for otl / regulator applications. OTL output. Massive current..

What is a 6336A substitute or equivalent?

Direct equivalents to the 6336A include CK6336A / 6336 family — check heater current and dissipation before substitution. These share the same pinout and operating envelope, so they can usually be swapped without circuit changes — though batch-to-batch variations between manufacturers (NOS vs current production) may shift the sonic character noticeably.

What are the key specifications of the 6336A?

Amplification factor μ ≈ 3, transconductance gm ≈ 13.5 mA/V, plate resistance rp ≈ 200 Ω, max plate voltage 400 V, max plate dissipation 30 W, heater 6.3 V / 5 A.

Is the 6336A still in production?

Production status varies by year and manufacturer. The current Amperatubes catalog classifies the 6336A as Moderate availability. NOS (new-old-stock) examples from RCA, Mullard, Tung-Sol, GE, Sylvania and Telefunken trade among collectors; modern production where it exists comes mostly from JJ Electronic, Electro-Harmonix, Tung-Sol (New Sensor), Genalex, and a handful of small-batch makers.

What does the 6336A sound like?

OTL output. Massive current.. Sonic character also depends heavily on the circuit operating point, the surrounding tubes in the stage, and the output transformer when present — use the interactive loadline calculator on this page to explore the trade-offs.

By Jean-Michel Falligan Devergne · Reviewed May 29, 2026

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6336A Triode Vacuum Tube

Dual triode6.3V / 5AOctalSPICE

Source6336A datasheet — dual high-current power triode; corrected sections=2Reviewed2026-05-29StatusDataModelCalcModel2 enginesPDF

High-power directly-heated triode for single-ended amplification

Datasheet ↗SPICE

6336A — GE·Raytheon — triode vacuum tube — (1955)

200Ω

13.5mA/V

16.7pF

21.8pF

3.80pF

GAIN3%

POWER75%

DRIVE100%

LINEARITY95%

SPECIFICATIONS

Heater6.3 V · 5 A

Max Plate Voltage400 V

Pa max30 W

Gain Factor3

gm13.5 mA/V

rp200 Ω

Inter-electrode capacitances

Cgk16.7 pF

Cgp21.8 pF

Cpk3.8 pF

PinoutOctal

Era1955

RarityModerate

HEATER6.3V / 5A

MAX PLATE400V / 30W

BASEoctal

SECTIONS2 (dual)

Source datasheets

4 manufacturer datasheets cross-checked for 6336A

4 verified

Triode-connectedTung-Sol1958 (April 1, 1958; Plate #5223-5225)

Specs when the screen grid (g2) is tied to the anode — the tube acts as a triode.

720

According to Tung-Sol (Tung-Sol Electric Inc., Electron Tube Division, Bloomfield N.J.) (1958 (April 1, 1958; Plate #5223-5225)): « EN TRIODE »

TYPICAL OPERATING POINT

SPICE model(2 available)2 .subckt available ↓

Va190V

Ia116.5mA

Vg-54.306999999999995V

Pd22.13W

RL2kΩ

Av9.4dB

EXECUTIVE SUMMARY

The 6336A is a dual indirectly-heated triode from GE·Raytheon, introduced around 1955. It provides a gain factor (μ) of 3 with 200Ω plate resistance. Commonly used in otl / regulator applications. OTL output. Massive current.

APPLICATIONS

SET outputPush-pull outputHeadphone outputPhase splitter

Generic triode otl / regulator stage

• Headphone amp• PA/public address

HISTORY

Introduced1955ManufacturerGE·Raytheon

Golden Age

6336A Datasheet

Local mirror · PDF

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METRIX TESTER

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