Dispenser Cathodes
Over the last 50 years, Spectra-Mat's technology for dispenser cathodes contributed to the latest advancements of the modern microwave, linear accelerators and x-rays tubes industry. Spectra-Mat duly controls all production processes from tungsten powder sieving till temperature test of the dispenser cathodes. Our Engineering Department supports the developments of new cathodes structures and shapes together with the possible addition to other components to dispenser cathodes inside the gun while our quality assurance procedures guarantee the full traceability of all the components.
- Sizes: diameter from 0.010" (0.25 mm) to over 10.00" (254 mm)
- Tungsten densities: from 50% to 84%
- Standard impregnants: 532, 411, 311, 612
- Scandate Mixes: 532X, 411X, 311X, 612X
- Coatings available: OsRu, OsW, Ir
- Machined Tolerance: +0.0002" (+0.005 mm)
- Proven current density in CW mode: up to 20 A/cm2
- Proven current density in pulsed mode: up to 120 A/cm2
- Proven operating lifetime: over 150000 hours
- Hollow cathodes, assembled guns and UHV potted > Coatings available: OsRu, OsW, Ir heaters available