Richardson Electronics is the world’s leading supplier of the highest quality replacement RF tubes for CO2 lasers, including the RS3021CJ and RS2048CJC, at competitive prices. We maintain an extensive global network of inventory to ensure same day shipping to meet your needs.
Our complete line of replacement tubes are manufactured by the world’s leading power grid and special purpose tube manufacturers, including THALES, National, and Toshiba.
For industrial laser and medical laser diagnostics systems, Richardson Electronics offers products manufactured for use in the following manufacturer's CO2 laser systems:
  • Bystronic
  • Electrox
  • Mazak
  • Zed Instrument
You can find our laser products listed below or visit our laser microsite at:

Replacement CO2 Laser Tube Cross Reference

OEM Part Number RELL Part Number
RS3021CJ / 120730 RS3021CJ
RS2048CJ / RS2048CJC / 1237260 / 1296799 RS2048CJC
NL10277-1 / Q450-1 NL10277-1
NL10277 NL10277
Q450-2 NL10277-1
Q450-4 Q450-4
Q450-5 Q450-5

In addition to our CO2 laser offerings, Richardson Electronics is a leading supplier of hydrogen thyratrons for Excimer lasers used in industrial and medical applications.

Richardson Electronics is the exclusive worldwide distributor of Excelitas (formerly PerkinElmer) thyratrons and can offer replacements for the following manufacturer's lasers:

  • Carl Baasel Lasertechnik
  • Coherent
  • Convergent Technologies
  • GE
  • Lambda
  • Laser Machining Lumonics
  • Philips
  • Photon Sources
  • Schwind
  • TUI
  • Wegman Baasel Laser
  • World Wide Laser

Replacement Laser Tube Cross Reference

OEM Part Number RELL Part Number
HY11 HY11
HY3005 HY3005
HY3202T HY3202T
LP189 HY3189
LP289 LS3289
LS3101S LS3101S
LS4101 LS4101
LS4111 LS4111
LS4113 LS4113
LS5101 LS5101