Electronic Components · Ignitrons
I-25 Mercury Ignitron
Available on request
Taylor / Richardson
I-25
Mercury-pool ignitron rated at 35 kV and 3000 A peak for medium-to-heavy industrial resistance welding and high-power switching applications.
- Peak Anode Voltage
- 35 kV
- Peak Current
- 3000 A
- Tube Type
- Ignitron
- Average Current
- 40 A
Worldwide shipping
Cross-reference support
Grunius BV · Groningen, NL
I-25
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About the I-25
The I-25 is a ignitron manufactured by Taylor / Richardson. Mercury-pool ignitron rated at 35 kV and 3000 A peak for medium-to-heavy industrial resistance welding and high-power switching applications.
Key ratings of the I-25 include tube type Ignitron, peak anode voltage 35 kV, peak current 3000 A, average current 40 A and coolant Water.
Typical applications are resistance spot welding, projection welding, industrial press welding and high-power inverter protection. Notable features: 3000 A peak current, 35 kV voltage class, between I-167 and I-23 power and water-cooled jacket.
Ignitrons are mercury-pool switch tubes able to conduct very high currents, used in capacitor-discharge pulsed power, welding control and crowbar protection circuits.
PartnerTubes supplies the I-25 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 | Ignitron |
|---|---|
| Peak Anode Voltage | 35 kV |
| Peak Current | 3000 A |
| Average Current | 40 A |
| Coolant | Water |
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
- Resistance spot welding
- Projection welding
- Industrial press welding
- High-power inverter protection
Key features
- 3000 A peak current
- 35 kV voltage class
- Between I-167 and I-23 power
- Water-cooled jacket
- Industry-standard welding tube
Related parts & equivalents
Recommended alongside or as alternatives to the I-25.
Similar Electronic Components
Comparable type, ratings, manufacturer or applications.
Other pulsed-power switches
Often ordered with the I-25 for the same system.
Frequently asked questions
What is the I-25?
The I-25 is a ignitron manufactured by Taylor / Richardson. Mercury-pool ignitron rated at 35 kV and 3000 A peak for medium-to-heavy industrial resistance welding and high-power switching applications.
What are the specifications of the I-25?
Tube Type: Ignitron; Peak Anode Voltage: 35 kV; Peak Current: 3000 A; Average Current: 40 A; Coolant: Water.
What is the I-25 used for?
The I-25 is used in resistance spot welding, projection welding, industrial press welding and high-power inverter protection.
What are alternatives or related parts to the I-25?
Related and comparable parts include I-23, I-167, GS-31B, GS-12, TGI1-1000-25 and TGI1-2000-35. Contact PartnerTubes to confirm interchangeability for your equipment.
Where can I buy the I-25?
The I-25 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=I-25 or email info@partnertubes.com.