Electronic Components · Thyratrons
CX8503C Hydrogen Thyratron (Legacy CyberKnife)
Ruggedized, flange-mounted hydrogen-filled triode thyratron with integral hydrogen reservoir, used as the pulse modulator switch tube in earlier-generation Accuray CyberKnife systems.
- Grid
- Positive grid
About the CX8503C
The CX8503C is a thyratron manufactured by e2v Technologies / Teledyne. Ruggedized, flange-mounted hydrogen-filled triode thyratron with integral hydrogen reservoir, used as the pulse modulator switch tube in earlier-generation Accuray CyberKnife systems.
Key ratings of the CX8503C include tube type Hydrogen-Filled Triode Thyratron, grid Positive grid, filling Hydrogen (integral reservoir) and mounting B4D socket with Tufnol mounting plate (MA357A).
Typical applications are earlier-generation Accuray CyberKnife pulse modulators, legacy medical linac modulators and pulsed power switching. Notable features: integral hydrogen reservoir for long service life, positive-grid triode design, compatible with MA357A B4D socket and mounting plate and used in legacy CyberKnife systems (confirm for your system).
Thyratrons are gas-filled (hydrogen or deuterium) switch tubes that discharge high-voltage pulse-forming networks in microseconds. They are the modulator switch in medical linacs, radar transmitters, lasers and pulsed-power systems, driving magnetrons and klystrons.
PartnerTubes supplies the CX8503C 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 | Hydrogen-Filled Triode Thyratron |
|---|---|
| Grid | Positive grid |
| Filling | Hydrogen (integral reservoir) |
| Mounting | B4D socket with Tufnol mounting plate (MA357A) |
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
- Earlier-generation Accuray CyberKnife pulse modulators
- Legacy medical linac modulators
- Pulsed power switching
Key features
- Integral hydrogen reservoir for long service life
- Positive-grid triode design
- Compatible with MA357A B4D socket and mounting plate
- Used in legacy CyberKnife systems (confirm for your system)
Related parts & equivalents
Recommended alongside or as alternatives to the CX8503C.
Similar Electronic Components
Comparable type, ratings, manufacturer or applications.
Microwave tubes driven by thyratron modulators
Often ordered with the CX8503C for the same system.
Frequently asked questions
What is the CX8503C?
The CX8503C is a thyratron manufactured by e2v Technologies / Teledyne. Ruggedized, flange-mounted hydrogen-filled triode thyratron with integral hydrogen reservoir, used as the pulse modulator switch tube in earlier-generation Accuray CyberKnife systems.
What are the specifications of the CX8503C?
Tube Type: Hydrogen-Filled Triode Thyratron; Grid: Positive grid; Filling: Hydrogen (integral reservoir); Mounting: B4D socket with Tufnol mounting plate (MA357A).
What is the CX8503C used for?
The CX8503C is used in earlier-generation Accuray CyberKnife pulse modulators, legacy medical linac modulators and pulsed power switching.
What are alternatives or related parts to the CX8503C?
Related and comparable parts include PM-1100X, CX1191D, CX1159G, TGI1-1000-25, GKh-12A and TGI1-2000-35. Contact PartnerTubes to confirm interchangeability for your equipment.
Where can I buy the CX8503C?
The CX8503C 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=CX8503C or email info@partnertubes.com.