Electronic Components · Thyratrons
GKh-12A Russian Hydrogen Thyratron
Russian hydrogen thyratron (GKh-12A) rated at 12 kV / 1000 A peak for pulsed switching in radar modulators, laser drivers, and accelerator pulse systems.
- Peak Anode Voltage
- 12 kV
- Peak Anode Current
- 1000 A
- Tube Type
- Hydrogen Thyratron
- Average Anode Current
- 1 A
About the GKh-12A
The GKh-12A is a thyratron manufactured by ISTOK / Reflector. Russian hydrogen thyratron (GKh-12A) rated at 12 kV / 1000 A peak for pulsed switching in radar modulators, laser drivers, and accelerator pulse systems.
Key ratings of the GKh-12A include tube type Hydrogen Thyratron, peak anode voltage 12 kV, peak anode current 1000 A, average anode current 1 A, repetition rate up to 3000 Hz and filling Hydrogen.
Typical applications are radar pulse modulators, excimer laser drivers, accelerator injection modulators, industrial pulsed power and russian equipment replacement. Notable features: 12 kV 1000 A hydrogen thyratron, 3000 Hz high rep rate, russian military-heritage design and cost-effective import alternative.
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 GKh-12A 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 Thyratron |
|---|---|
| Peak Anode Voltage | 12 kV |
| Peak Anode Current | 1000 A |
| Average Anode Current | 1 A |
| Repetition Rate | up to 3000 Hz |
| Filling | Hydrogen |
| Origin | Russian |
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
- Radar pulse modulators
- Excimer laser drivers
- Accelerator injection modulators
- Industrial pulsed power
- Russian equipment replacement
Key features
- 12 kV 1000 A hydrogen thyratron
- 3000 Hz high rep rate
- Russian military-heritage design
- Cost-effective import alternative
- Long-life hydrogen reservoir
Frequently asked questions
What is the GKh-12A?
The GKh-12A is a thyratron manufactured by ISTOK / Reflector. Russian hydrogen thyratron (GKh-12A) rated at 12 kV / 1000 A peak for pulsed switching in radar modulators, laser drivers, and accelerator pulse systems.
What are the specifications of the GKh-12A?
Tube Type: Hydrogen Thyratron; Peak Anode Voltage: 12 kV; Peak Anode Current: 1000 A; Average Anode Current: 1 A; Repetition Rate: up to 3000 Hz; Filling: Hydrogen; Origin: Russian.
What is the GKh-12A used for?
The GKh-12A is used in radar pulse modulators, excimer laser drivers, accelerator injection modulators, industrial pulsed power and russian equipment replacement.
What are alternatives or related parts to the GKh-12A?
Related and comparable parts include TGI1-1000-25, TGI1-500-10, TGU1-500-20, ITG1-500-10, ITG3-1-7.5 and TGI1-2000-35. Contact PartnerTubes to confirm interchangeability for your equipment.
Where can I buy the GKh-12A?
The GKh-12A 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=GKh-12A or email info@partnertubes.com.

