RF Power Grid Tubes · Triodes
CTK 25-4 High Frequency Metal-Ceramic Power Triode
Available on request
Thomson / Thales
CTK 25-4
Thales high-power coaxial metal-ceramic triode for industrial CO₂ laser cutting machines and high-power RF oscillator and amplifier applications.
- Max Frequency
- 100 MHz
- Anode Cooling
- Water
- Tube Type
- Triode
- Construction
- Metal-ceramic coaxial
Worldwide shipping
Cross-reference support
Grunius BV · Groningen, NL
CTK 25-4
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About the CTK 25-4
The CTK 25-4 is a power triode manufactured by Thomson / Thales. Thales high-power coaxial metal-ceramic triode for industrial CO₂ laser cutting machines and high-power RF oscillator and amplifier applications.
Key ratings of the CTK 25-4 include tube type Triode, construction Metal-ceramic coaxial, anode cooling Water, cathode Thorium tungsten and max frequency 100 MHz.
Typical applications are CO₂ laser cutting machine oscillators, high-power RF amplifiers, industrial induction heating, plastic welding systems and large-scale RF heating. Notable features: high-power CTK series triode, metal-ceramic coaxial construction, water-cooled anode and thorium tungsten cathode.
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 CTK 25-4 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 |
|---|---|
| Construction | Metal-ceramic coaxial |
| Anode Cooling | Water |
| Cathode | Thorium tungsten |
| Max Frequency | 100 MHz |
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
- CO₂ laser cutting machine oscillators
- High-power RF amplifiers
- Industrial induction heating
- Plastic welding systems
- Large-scale RF heating
Key features
- High-power CTK series triode
- Metal-ceramic coaxial construction
- Water-cooled anode
- Thorium tungsten cathode
- Thomson/Thales industrial design
Related parts & equivalents
Recommended alongside or as alternatives to the CTK 25-4.
Similar RF Power Grid Tubes
Comparable type, ratings, manufacturer or applications.
Vacuum capacitors for tank & matching circuits
Often ordered with the CTK 25-4 for the same system.
Frequently asked questions
What is the CTK 25-4?
The CTK 25-4 is a power triode manufactured by Thomson / Thales. Thales high-power coaxial metal-ceramic triode for industrial CO₂ laser cutting machines and high-power RF oscillator and amplifier applications.
What are the specifications of the CTK 25-4?
Tube Type: Triode; Construction: Metal-ceramic coaxial; Anode Cooling: Water; Cathode: Thorium tungsten; Max Frequency: 100 MHz.
What is the CTK 25-4 used for?
The CTK 25-4 is used in CO₂ laser cutting machine oscillators, high-power RF amplifiers, industrial induction heating, plastic welding systems and large-scale RF heating.
What are alternatives or related parts to the CTK 25-4?
Related and comparable parts include CTK 15-2, CTK 35-2, CTK 24-5, CTK 30-2, ITK 120-2 and ITK 15-2. Contact PartnerTubes to confirm interchangeability for your equipment.
Where can I buy the CTK 25-4?
The CTK 25-4 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=CTK%2025-4 or email info@partnertubes.com.