Vacuum Tube - 4-125A / 4D21, Tetrode, Power Amplifier

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Vacuum Tube - 4-125A / 4D21, Tetrode, Power Amplifier

$139.90
In stock
Quantity in stock: 4

New Old-Stock (N.O.S.) tube.

The 4D21 / 4-125A is a four-electrode tube designed for use as a power amplifier and oscillator. The anode is capable of dissipating 125 watts, and cooling is accomplished by radiation. The cathode is a thoriated-tungsten filament. Maximum ratings apply up to 120 megacycles.

SKU:
T-4-125A_4D21
Item ID:
006815
Brand:
New Old Stock (N.O.S.)
Product Measurements
Packaging Dimensions3 in. × 3 in. × 7 in.
Weight0.714 lbs.

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Specifications, Files, and Documents

PDF: NOS Tube Specification Sheet (551.85 KB)4d21.pdf
Note: These new-old-stock vacuum tube specifications are provided as informational only, and in no way guarantee the brand or exact functionality of the vacuum tube you receive. Data from tubedata.org or other sources as supplied by John Atwood.

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