What is the ECL83-P vacuum tube?

The ECL83-P (ECL83 (Pentode)) is a pentode vacuum tube designed for power applications. Pentode section..

What is a ECL83-P substitute or equivalent?

Direct equivalents to the ECL83-P include None. 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 ECL83-P?

Amplification factor μ ≈ 10, transconductance gm ≈ 5.5 mA/V, plate resistance rp ≈ 53.0 kΩ, max plate voltage 250 V, max plate dissipation 5.4 W, heater 6.3 V / 0.6 A.

Is the ECL83-P still in production?

Production status varies by year and manufacturer. The current Amperatubes catalog classifies the ECL83-P 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 ECL83-P sound like?

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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ECL83-P ECL83 (Pentode) Pentode Vacuum Tube

Pentode6.3V / 0.6A9-pin NovalSPICE

Sourcedatasheet4u Mullard ECL83Reviewed2026-05-29StatusDataModelCalcModelKoren pentodePDF

Small-signal pentode for low-noise voltage amplification

Datasheet ↗SPICE

ECL83 (Pentode) — Philips — pentode vacuum tube — (1958)

53.0kΩ

5.5mA/V

5.7pF

0.2pF

4.70pF

GAIN10%

POWER14%

DRIVE47%

LINEARITY95%

SPECIFICATIONS

Heater6.3 V · 0.6 A

Max Plate Voltage250 V

Pa max5.4 W

Gain Factor10

gm5.5 mA/V

rp53.0 kΩ

Inter-electrode capacitances

Cgk5.7 pF

Cgp0.2 pF

Cpk4.7 pF

Pinout9-pin Noval

Era1958

RarityModerate

HEATER6.3V / 0.6A

MAX PLATE250V / 5.4W

BASEnoval

Source datasheets

1 manufacturer datasheets cross-checked for ECL83 (Pentode)

1 verified

EXECUTIVE SUMMARY

The ECL83-P is a indirectly-heated pentode from Philips, introduced around 1958. It provides a gain factor (μ) of 10 with 53.0kΩ plate resistance. Commonly used in power applications. Pentode section.

HISTORY

Introduced1958ManufacturerPhilips

Golden Age

ECL83-P Datasheet

Local mirror · PDF

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METRIX TESTER

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