7A-25Z

Designed to be used as a horizontal deflection amplifier in TV receivers.
MFR: RCA, GE, Raytheon
SKU: 12BQ6GA
New old stock * No longer available for export.

12BR7 Tube Duplex-Diode Triode

12BV11 Twin Pentode Tube

MFR: Philco
SKU: 12BV11

Sharp Cutoff Pentode. Runs off 12.6v±10% AC or DC volts
Primarily used in video amplifiers for TVs. Features high transconductance, high power sensitivity, and low interelectrode capacitances. It can deliver relatively large output voltages with low values of plate-supply voltage and plate load resistance.

Designed to function as a vertical deflection amplifier in TV amplifiers.

The 12B4A has exhibits a controlled heater warmup, Used with other 600-milliampre tubes that have the same heater warm-up characteristic, heater voltage surges across the individual tubes are minimized during warm-up period. Except for the controlled heater warm-up characteristic, the 12B4A is identical to the 12B4.
New old stock * No longer available for export.
MFR: RCA, Arcturus, Sylvania, Shield
SKU: 12B4A/12B4

12AY7/6072A General Electric Tube Twin Triode New Old Stock

New Old Stock * New In Box * No longer available for export
MFR: General Electric Company
SKU: 12AY7-GE

White Label
Preferred for non-audio applications
MFR: China
SKU: 12AT7-CHINA

New Old Stock * No longer available for export
MFR: Raytheon, USA 
SKU: 12AT7WA-RAY

Can Replace 6201 and JAN12AT7WA

New Old Stock * No longer available for export
MFR: General Electric Company
SKU: 12AT7WC-6201-GE
NSN: 5960-0521 or 5960-00-179-4446