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Penta Labs RF Vacuum Tubes
88 Customer Reviews
Penta Labs matched vacuum tubes go through rigorous test procedures to enhance performance during their operation. Each Penta Labs vacuum tube is burned in for a minimum of 48 hours dissipating full power with filament, plate and screen voltages that are normally used in amplifier applications. All of this ensures that the various electrical parameters have
Penta Labs matched vacuum tubes go through rigorous test procedures to enhance performance during their operation. Each Penta Labs vacuum tube is burned in for a minimum of 48 hours dissipating full power with filament, plate and screen voltages that are normally used in amplifier applications. All of this ensures that the various electrical parameters have stabilized and the matching of each vacuum tube will not drift during its lifetime. Penta Labs power tubes are matched within a 5% variation on all parameters. This is a process of eliminating tubes that test with bad values, rejecting those outside limits of design. Each passing vacuum tube is then tested on a fleet of WT-100A original RCA production testers for plate current, screen current and transconductance (gm). We also check for grid current and leakage between elements. When you receive single and matched vacuum tubes from Penta Labs, you can rest assured that you are receiving a product that has been thoroughly tested and will perform at levels unsurpassed in the industry.
DX Engineering offers a selection of Penta Labs single and matched sets of RF vacuum tubes and ceramic vacuum tubes for your electronics project or repair. Order yours today!
3-500ZG Pair Matched Vacuum Tubes, High-Mu Power Triode, 500W, Ceramic Base, Set of 2
Part Number: PLB-3-500ZG-2
Estimated Ship Date: Today
Estimated Ship Date: Today
4CX800A Single Ceramic Vacuum Tube, Thompson Brand, GU74B Equivalent, RF Power Tetrode, 800W Max. Dissipation, Each
Part Number: PLB-4CX800A-T
Estimated Ship Date: Today
Estimated Ship Date: Today
3-500ZG Vacuum Tube, High-Mu Power Triode, 500W, Ceramic Base, Each
Part Number: PLB-3-500ZG
Estimated Ship Date: Today
Estimated Ship Date: Today
811A Four Matched Vacuum Tubes, High-Mu Power Triode, 160W, 30 MHz, Set of 4
Part Number: PLB-811A-4
Estimated Ship Date: Today
Estimated Ship Date: Today
OM-Power Amplifier Tetrode FU-728F for OM2000+, OM2000A, OM2500 and OM4000, Each
Part Number: PLB-FU-728F
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
3CX3000A7 Ceramic Vacuum Tube, High-Mu Power Triode, Each
Part Number: PLB-3CX3000A7
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
572B Three Matched Vacuum Tubes, Power Triode, Direct replacement for the 811A, Set of 3
Part Number: PLB-572B-3
Estimated Ship Date: Today
Estimated Ship Date: Today
3CX1500A7 / 8877 Ceramic Vacuum Tube, High-Mu Power Triode, 1500W, 250 MHz, Each
Part Number: PLB-3CX1500A7
Estimated Ship Date: Today
Estimated Ship Date: Today
572B Pair Matched Vacuum Tubes, Power Triode, Direct replacement for the 811A, Set of 2
Part Number: PLB-572B-2
Estimated Ship Date: Today
Estimated Ship Date: Today
811A Three Matched Vacuum Tubes, High-Mu Power Triode, 160W, 30 MHz, Set of 3
Part Number: PLB-811A-3
Estimated Ship Date: Today
Estimated Ship Date: Today
3-500ZG Four Matched Vacuum Tubes, High-Mu Power Triode, 500W, Ceramic Base, Set of 4
Part Number: PLB-3-500-ZG-4
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
811A Vacuum Tube, High-Mu Power Triode, 160W, 30 MHz, Each
Part Number: PLB-811A
Estimated Ship Date: Today
Estimated Ship Date: Today
572B Vacuum Tube, Power Triode, Direct replacement for the 811A, Each
Part Number: PLB-572B
Estimated Ship Date: Today
Estimated Ship Date: Today
572B Four Matched Vacuum Tubes, Power Triode, Direct replacement for the 811A, Set of 4
Part Number: PLB-572B-4
Estimated Ship Date: Today
Estimated Ship Date: Today
3CX800A7 Ceramic Vacuum Tube, Compact Power Triode, 750W PEP Output to 350 MHz, Each
Part Number: PLB-3CX800A7
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
811A Pair Matched Vacuum Tubes, High-Mu Power Triode, 160W, 30 MHz, Set of 2
Part Number: PLB-811A-2
Estimated Ship Date: Today
Estimated Ship Date: Today
3CX800A7 Ceramic Pair Matched Vacuum Tubes, Compact Power Triode, 750W PEP Output to 350 MHz, Set of 2
Part Number: PLB-3CX800A7-2
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
3-500ZG Three Matched Vacuum Tubes, High-Mu Power Triode, 500W, Ceramic Base, Set of 3
Part Number: PLB-3-500ZG-3
Not Yet Reviewed
Estimated Ship Date: Nov 11, 2026 if ordered today
Estimated Ship Date: Nov 11, 2026 if ordered today
4CX1000A Ceramic Vacuum Tube, Radial-Beam Power Tretrode, 1000W, 110 MHz, Each
Part Number: PLB-4CX1000A
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today