Vacuum Tube - 12B4A, Triode, Low MU

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Vacuum Tube - 12B4A, Triode, Low MU

In stock

New-Old-Stock (NOS) tube.

The 12B4-A is a miniature low-mu triode designed primarily for service as a vertical-deflection amplifier in television receivers. The tube features high plate current at relatively low plate voltages and is capable of withstanding the high pulse voltages normally encountered in this application.

In addition, the 12B4-A exhibits a controlled heater warm-up characteristic which makes the tube particularly suited for use in television receivers which employ series-connected heaters. When the 12B4-A is used in conjunction with other 600-millampere types which exhibit essentially the same heater warm-up characteristic, heater voltage surges across the individual tubes are minimized during the warm-up period.

Except for the controlled heater warm-up time characteristic, the 12B4-A is identical to the 12B4.

Item ID:
Product Measurements
No measurements are currently available for this product. Please contact us if you have any questions.
Packaging Information
Packaging Dimensions1 in. × 1 in. × 3 in.
Weight (Packaging)0.034 lbs.

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Asked by Anonymous on April 30th, 2019.
April 30th, 2019
Staff Member
We would provide several shipping options when placing an order, and to get an idea of pricing, you can add the desired tubes to your cart and proceed to checkout. Once you have entered all of your shipping information, you be then be given shipping options to choose from. You can do this simply for pricing information, or you can proceed from there to place your order.

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