You are here

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

No Image Available

No image available
SKU: T-4-125A_4D21
Item ID: 006815
List Price: $139.90
Price: $104.93
You Save: $34.97 (25%)
In stock
View Specifications, Files, and Documents

New-Old-Stock (NOS) 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.

View Product Measurements

My Project Lists

You must be logged in to add items to a project list.

Product Reviews

No product reviews yet! Be the first!

Questions and Answers

No questions have been asked about this product.