The SVLFL Series of space-qualified DC-DC converters is specifically designed for the harsh radiation environment of space applications. Performance is guaranteed through the use of hardened semiconductor components, radiation lot acceptance testing (RLAT) of non-hardened components, and analysis. The SVLFL Series has been characterized for Total  Ionizing Dose (TID) performance including Enhanced Low Dose Rate Sensitivity (ELDRS) and for Single Event Effects (SEE) according to VPT’s DLA-approved Radiation Hardness  Assurance (RHA) plan per MIL-PRF-38534, Appendix G, Level L. Characterization is performed at both the component level and at the SVLFL Series hybrid converter level.

Radiation-hardened to TID levels of 60 krad(Si) and SEE to 85 MeV/mg/cm2, the SVLFL Series of DC-DC converters is suited for use in many low Earth orbit (LEO), medium Earth orbit (MEO), geostationary orbit (GEO), deep space, and launch vehicle programs.


  • Dual output options of  5V (100 W), 12V (110 W), and 15V (120 W)
  • Wide input voltage range: 30V to 60V continuous, 80V transient
  • Continuous operation over full military temperature range of -55°C to +125°C with no power derating
  • Very low output noise
  • Parallel up to 4 units with current sharing
  • Output voltage trim up +10% or down -20%
  • Radiation immune magnetic feedback circuit
  • No use of optoisolators
  • Undervoltage lockout
  • Current limit protection/short circuit protection
  • Low profile (3.005″ x 1.505″ x 0.400″) and light weight (86g) hermetic packaging with industry standard pinout. Standard and optional side-flanged versions available.

Space-Level Characterizations:

  • Guaranteed TID performance to 60 krad(Si) including LDR
  • SEE performance to 85 MeV/mg/cm. Transients are fully characterized for cross section and magnitude.
  • Worst-case analysis, stress, radiation, reliability reports available.

Compliances and Certifications:

  • Qualified to MIL-PRF-38534 Class K on DLA SMD# TBD
  • MIL-PRF-38534 element evaluated components
  • MIL-STD-461 C/D/E/F when used with appropriate VPT EMI filter
  • Manufactured in a MIL-PRF-38534 Class H and Class K facility
  • Manufactured in an ISO9001, MIL-PRF-38534 Class H andClass K facility
  • MIL-STD-883 military and space environmental screening
  • RHA level L

Summary Data

For complete specifications, please see the official datasheet.

To provide you with the most accurate data for the actual performance of this product once deployed, please note that the electrical performance data provided below is at Tcase = -55° C to 125° C, Vin= +28V +-5%, full load, unless otherwise specified.





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