RF Power Grid Tubes · Triodes
3CX3000F7 Ceramic Triode
Available on request
Eimac / CPI
3CX3000F7
Ceramic-metal power triode with 3 kW plate dissipation for grounded-grid FM broadcast amplifiers and HF linear amplifiers operating up to 220 MHz.
- Plate Dissipation
- 3000 W
- Max Frequency
- 220 MHz
- Max Plate Voltage
- 7.5 kV
- Max Plate Current
- 1.5 A
Worldwide shipping
Cross-reference support
Grunius BV · Groningen, NL
3CX3000F7
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About the 3CX3000F7
The 3CX3000F7 is a power triode manufactured by Eimac / CPI. Ceramic-metal power triode with 3 kW plate dissipation for grounded-grid FM broadcast amplifiers and HF linear amplifiers operating up to 220 MHz.
Key ratings of the 3CX3000F7 include tube type Triode, plate dissipation 3000 W, max plate voltage 7.5 kV, max plate current 1.5 A, mu 200 and max frequency 220 MHz.
Typical applications are FM broadcast transmitters 10–50 kW, HF linear power amplifiers, VHF grounded-grid amplifiers and scientific RF power sources. Notable features: 3 kW plate dissipation triode, high mu 200 for grounded-grid use, 220 MHz extended frequency and ceramic-metal envelope.
Power triodes are three-electrode grid tubes used as RF oscillators and amplifiers in industrial RF heating (plastic welding, induction heating, drying), RF-excited CO₂ lasers, broadcast transmitters and particle accelerators. In oscillator service they work with vacuum capacitors in the tank and matching circuits.
PartnerTubes supplies the 3CX3000F7 worldwide from Groningen, the Netherlands — availability, lead time and price are confirmed per enquiry. Our team can help with equivalent and cross-reference types, sockets and accessories, and supply programmes for OEM and maintenance customers. Interchangeability must always be confirmed for the specific equipment.
Technical specifications
| Tube Type | Triode |
|---|---|
| Plate Dissipation | 3000 W |
| Max Plate Voltage | 7.5 kV |
| Max Plate Current | 1.5 A |
| Mu | 200 |
| Max Frequency | 220 MHz |
| Filament Voltage | 5.0 V |
| Filament Current | 14.5 A |
| Cooling | Forced air |
| Envelope | Ceramic-metal |
Specifications are indicative and based on published manufacturer data. Always verify against the official datasheet and confirm suitability for your application before ordering.
Applications & features
Used in
- FM broadcast transmitters 10–50 kW
- HF linear power amplifiers
- VHF grounded-grid amplifiers
- Scientific RF power sources
Key features
- 3 kW plate dissipation triode
- High mu 200 for grounded-grid use
- 220 MHz extended frequency
- Ceramic-metal envelope
- FM broadcast industry standard
Related parts & equivalents
Recommended alongside or as alternatives to the 3CX3000F7.
Similar RF Power Grid Tubes
Comparable type, ratings, manufacturer or applications.
Vacuum capacitors for tank & matching circuits
Often ordered with the 3CX3000F7 for the same system.
Jennings UCSL 25–200 pF Variable Vacuum Capacitor 25 kV
Jennings Technology (CPI)
Capacitance Range 25–200 pF
Jennings UCSL 15–100 pF Variable Vacuum Capacitor 20 kV
Jennings Technology (CPI)
Capacitance Range 15–100 pF
Jennings UCSL 10–60 pF Variable Vacuum Capacitor
Jennings Technology (CPI)
Capacitance Range 10–60 pF
Frequently asked questions
What is the 3CX3000F7?
The 3CX3000F7 is a power triode manufactured by Eimac / CPI. Ceramic-metal power triode with 3 kW plate dissipation for grounded-grid FM broadcast amplifiers and HF linear amplifiers operating up to 220 MHz.
What are the specifications of the 3CX3000F7?
Tube Type: Triode; Plate Dissipation: 3000 W; Max Plate Voltage: 7.5 kV; Max Plate Current: 1.5 A; Mu: 200; Max Frequency: 220 MHz; Filament Voltage: 5.0 V; Filament Current: 14.5 A; Cooling: Forced air; Envelope: Ceramic-metal.
What is the 3CX3000F7 used for?
The 3CX3000F7 is used in FM broadcast transmitters 10–50 kW, HF linear power amplifiers, VHF grounded-grid amplifiers and scientific RF power sources.
What are alternatives or related parts to the 3CX3000F7?
Related and comparable parts include 3CX5000A7, 3CX10000H3, 4CX3000A, QB3.5-750, 8874 and 8877. Contact PartnerTubes to confirm interchangeability for your equipment.
Where can I buy the 3CX3000F7?
The 3CX3000F7 is available from PartnerTubes (Grunius BV, Groningen, Netherlands) with worldwide shipping. Availability and lead time are confirmed on request. Request a quote at https://www.partnertubes.com/contact/?part=3CX3000F7 or email info@partnertubes.com.