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Rakon releases the radiation tolerant COTS XO RK105 and VCXO RK205

Rakon 17 September 2018

In order to respond to the growing needs of the New Space market (Low Earth Orbit satellites with a short mission lifetime), Rakon has recently released a radiation tolerant XO and a radiation tolerant VCXO, both based on a COTS (Commercially Off The Shelf) design.

They have been designed for missions requiring radiation tolerance at a reasonable cost and with a short lead-time: TID (Total Ionizing Dose) spec is 72 or 100 kRad (for CMOS) and Single Event Latch-up is guaranteed up to 32.4 or 62 MeV (for LVPECL).

Key features of these radiation tolerant COTS XO and VCXO also include:


  • Wide frequency ranges with three output options available:
    • CMOS output – Frequencies from 8 to 200 MHz
    •  LVPECL/LVDS output – Frequencies from 8 to 1500 MHz
  • Tight FvT stability:
    • AFD (Absolute Frequency Drift): ±50 ppm over -40 to +85°C
    • APR (Absolute Pulling Range): ±50 ppm for a VCXO
  • Small hermetically sealed SMD package size of 5.0 x 3.2 x 1.2 mm
  • Excellent high shock resistance: up to 1500 g, 0.5 ms, 1/2 sine
  • Low RMS jitter: 0.9 ps typ.
  • Low power: 50 to 178 mW typ.




Both products are available with different types of screening: from EM (Engineering Model) to FM (Flight Models), with 3 possible screening options for the FM in order to precisely fit the various requirements of the New Space projects. The COTS design of these both products make them cost-effective and ideal for the small LEO (Low Earth Orbit) satellites requiring radiation tolerant components at a reasonable cost.

The RK105 XO and RK205 VCXO are Rakon's newly developed products for Low Earth Orbit satellites. For further information, or support, please contact us at