What is the ECL82-P vacuum tube?

The ECL82-P (ECL82 (Pentode)) is a pentode vacuum tube designed for power applications. Power pentode section..

What is a ECL82-P substitute or equivalent?

Direct equivalents to the ECL82-P include 6BM8. 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 ECL82-P?

Amplification factor μ ≈ 10, transconductance gm ≈ 7.5 mA/V, plate resistance rp ≈ 16.0 kΩ, max plate voltage 300 V, max plate dissipation 7 W, heater 6.3 V / 0.78 A.

Is the ECL82-P still in production?

Production status varies by year and manufacturer. The current Amperatubes catalog classifies the ECL82-P as Common 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 ECL82-P sound like?

Power pentode section.. 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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ECL82-P ECL82 (Pentode) Pentode Vacuum Tube

Pentode6.3V / 0.78A9-pin NovalSPICE

SourcePhilips ECL82/6BM8 datasheet (drtube)Reviewed2026-05-29StatusDataModelCalcModelKoren pentodePDF

Small-signal pentode for low-noise voltage amplification

Datasheet ↗SPICE

ECL82 (Pentode) — Philips — pentode vacuum tube — (1955)

16.0kΩ

7.5mA/V

9.3pF

0.3pF

8.00pF

GAIN10%

POWER18%

DRIVE84%

LINEARITY95%

SPECIFICATIONS

Heater6.3 V · 0.78 A

Max Plate Voltage300 V

Pa max7 W

Gain Factor10

gm7.5 mA/V

rp16.0 kΩ

Inter-electrode capacitances

Cgk9.3 pF

Cgp0.3 pF

Cpk8 pF

Pinout9-pin Noval

Era1955

RarityCommon

HEATER6.3V / 0.78A

MAX PLATE300V / 7W

BASEnoval

Source datasheets

6 manufacturer datasheets cross-checked for ECL82 (Pentode)

6 verified

EXECUTIVE SUMMARY

The ECL82-P is a indirectly-heated pentode from Philips, introduced around 1955. It provides a gain factor (μ) of 10 with 16.0kΩ plate resistance. Commonly used in power applications. Power pentode section.

HISTORY

Introduced1955ManufacturerPhilips

Golden Age

ECL82-P Datasheet

Local mirror · PDF

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METRIX TESTER

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