What is the Nuvistor 7587 vacuum tube?

The Nuvistor 7587 (7587 Nuvistor) is a tetrode vacuum tube designed for preamp / uhf applications. Metal-ceramic Nuvistor..

What is a Nuvistor 7587 substitute or equivalent?

Direct equivalents to the Nuvistor 7587 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 Nuvistor 7587?

Amplification factor μ ≈ 58, transconductance gm ≈ 10.6 mA/V, plate resistance rp ≈ 200.0 kΩ, max plate voltage 250 V, max plate dissipation 2.2 W, heater 6.3 V / 0.15 A.

Is the Nuvistor 7587 still in production?

Production status varies by year and manufacturer. The current Amperatubes catalog classifies the Nuvistor 7587 as Sought-after 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 Nuvistor 7587 sound like?

Metal-ceramic Nuvistor.. 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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Nuvistor 7587 7587 Nuvistor Tetrode Vacuum Tube

Tetrode6.3V / 0.15A5-pin Nuvistor + Top CapSPICE

SourceRadiomuseum 7587 (sharp-cutoff tetrode)Reviewed2026-05-29StatusDataModelCalcModelNorman KorenPDF

Beam power tetrode rated at 2.2W for high-power output stages

Datasheet ↗SPICE

7587 Nuvistor — RCA — tetrode vacuum tube — (1960)

200.0kΩ

10.6mA/V

6.7pF

0.0pF

1.40pF

GAIN58%

POWER6%

DRIVE0%

LINEARITY71%

SPECIFICATIONS

Heater6.3 V · 0.15 A

Max Plate Voltage250 V

Pa max2.2 W

Gain Factor58

gm10.6 mA/V

rp200.0 kΩ

Inter-electrode capacitances

Cgk6.7 pF

Cgp0.012 pF

Cpk1.4 pF

Pinout5-pin Nuvistor + Top Cap

Era1960

RaritySought-after

HEATER6.3V / 0.15A

MAX PLATE250V / 2.2W

BASEnuvistor-5

TYPICAL OPERATING POINT

Va135V

Ia15.04mA

Vg-2.5V

Pd2.03W

RL400kΩ

Av33.5dB

EXECUTIVE SUMMARY

The Nuvistor 7587 is a indirectly-heated beam tetrode from RCA, introduced around 1960. It provides a gain factor (μ) of 58 with 200.0kΩ plate resistance. Commonly used in preamp / uhf applications. Metal-ceramic Nuvistor.

HISTORY

Introduced1960ManufacturerRCA

Late Production

Nuvistor 7587 Datasheet

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