Talk Around Town: EPC Space Claims New Rad-Hard GaN Transistors Can Power Space-Based AI GPUs

What the Chatter Is About

Well, butter my biscuit and call it Sunday — word around the barn is that EPC Space has hollered out an announcement about three brand-new radiation-hardened gallium nitride transistors. According to the company, these parts — the EPC7050PCSH at 15 V, the EPC7066PCSH at 25 V, and the EPC7065PCSH at 40 V — come dressed up in plastic surface-mount PQFN packages with backside thermal pads, and EPC Space says they are built specifically for next-generation space computing power delivery. Three specialist trade outlets — Semiconductor Today, Compound Semiconductor News, and Electronics Weekly — all picked up the story within about a day of each other in mid-August 2026, though all three appear to be drinking from the same company press-kit watering hole rather than doing their own fence-checking.

EPC Space further claims, according to its own announcement, that the devices are meant to supply power to AI processors and GPUs riding along on spacecraft — which, if you have ever tried to keep a graphics card from overheating in your garage on a hot Alabama afternoon, you can imagine is one heck of a design challenge when you add cosmic radiation and vacuum to the mix. The company describes what it calls a product line aimed at voltage regulator modules, point-of-load converters, and intermediate bus converter applications aboard these platforms, per its own materials.

What EPC Space Actually Says the Specs Are

According to EPC Space's own announcement, all three devices share a claimed continuous current rating of 101 A. The company says on-resistance differs by voltage rating: 0.28 mΩ for the 15 V part, 0.37 mΩ for the 25 V device, and 0.5 mΩ for the 40 V version. Now, those numbers are tighter than a tick on a hound dog's ear, and they would be mighty impressive if independently confirmed — but so far, nobody outside the company has stuck a probe on one of these things to check.

On the radiation side, EPC Space states all three achieve a total ionizing dose immunity greater than 1 Mrad, a single-event effect linear energy transfer threshold of 85 MeV cm²/mg, and neutron fluence tolerance greater than 4×10¹⁵ n/cm². Per Semiconductor Today's coverage of the company's own data, engineering model units are priced at $85 each, and rad-hard space-qualified units run $125 each at 500-unit quantities. Those figures trace back to EPC Space as their sole source — no independent pricing analysis has emerged.

What the CEO Said, Per the Trade Press

Electronics Weekly reported that EPC Space CEO Bel Lazar said the devices are intended to deliver power to what the CEO described as space compute assets, specifically naming the Versal SoC and NVIDIA GPUs as examples of target platforms. Lazar also said the parts cover voltage regulator module, intermediate voltage regulation, point-of-load, and intermediate bus converter applications, according to that same Electronics Weekly report. That is a pretty specific list of dance partners for a barn dance that has not yet been confirmed by any of those partners themselves.

EPC Space also says, per its announcement, that the 15 V device suits synchronous rectifier use on the secondary side of intermediate bus converters with outputs in the 5 V–12 V range, while the 25 V and 40 V parts are positioned for point-of-load buck converters delivering core voltage around 0.8 V to processors. All of that application guidance comes from the company's own description rather than from any reported customer requirement or independent system-level analysis.

What Remains Unverified and Unaddressed

Lord have mercy, there is a whole pile of open questions sitting on the porch that nobody has answered yet. No independent laboratory has published test results for any of these three devices. No spacecraft integrator or prime contractor has publicly confirmed they are evaluating or using them. No analyst firm has weighed in on whether the specifications stack up against competing silicon or silicon carbide solutions in the space power market. The absence of any competitive commentary is about as noticeable as a missing tooth at a school picture day.

There is also a packaging question that is mighty interesting and equally unaddressed: EPC Space is using plastic PQFN packages for these rad-hard parts, which is a departure from the hermetic metal packages that have traditionally been preferred for space-qualified components. Hermetic packaging is like a mason jar seal for electronics — it keeps the bad stuff out. The shift to plastic surface-mount packages may offer size and cost advantages, but no independent space-qualification engineer or standards body has publicly commented on whether that trade-off is acceptable for the radiation environments these devices claim to handle. EPC Space's own prior 40 V devices announced in June 2024 used hermetic packages, per the company's website, making this a notable change in approach that merits scrutiny nobody has yet publicly provided.

Some Context on EPC Space's Product History

EPC Space, which describes itself as expanding its rad-hard eGaN FET product line, has been putting new parts on the shelf for a few years now. According to Compound Semiconductor News, the company released rad-hard GaN devices in the 200 V–300 V range back in 2023, and per EPC Space's own website, it announced 40 V hermetic-packaged rad-hard FETs in June 2024. So this latest trio represents what the company characterizes as a continuation of that broader effort — though, again, that characterization comes from EPC Space itself rather than from any independent market assessment.

Our Analysis: What This Announcement Might Signal

This section is analysis, not reporting, so put on your thinking overalls. If EPC Space's claimed specifications hold up under independent scrutiny — and that is a sizable if, given that nobody outside the company has yet checked the fencepost — the announcement would suggest that the market for purpose-built power components serving AI computing workloads in space is developing fast enough to justify dedicated product development. Naming specific commercial processor platforms like NVIDIA GPUs as targets in a rad-hard power transistor announcement is the kind of thing that would have sounded like science fiction not too long ago, and it at minimum tells you where EPC Space thinks the demand is heading.

The plastic-packaging choice is analytically interesting as well. If the space industry is willing to accept plastic surface-mount packages for radiation environments this demanding, that could meaningfully lower costs and shrink form factors for spacecraft power systems — kind of like trading your cast-iron skillet for a lightweight camping pan and hoping it does not buckle over the campfire. Whether that trade is prudent requires the kind of independent testing and qualification discussion that, as of this writing, has not happened publicly. Until that fence gets walked, treat everything here as the company's own story about itself.