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RELL (Richardson Electronics): The most misclassified AI infrastructure play Wall Street is completely ignoring? (Deep Dive)

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Jun 10, 2026 · 02:12

Everyone is chasing NVDA, SMCI, or the utility/nuclear stocks for power. But I wanted to find the deeper suppliers—specifically, companies that are classified as legacy industrial businesses but are actually quite hard to bypass for the next phase of AI scaling.

I think Richardson Electronics ($RELL) fits this bill. Here is why the thesis looks interesting.

1. The Power Quality Bottleneck
AI clusters consume an absurd amount of power, but it’s also about power quality. Next-gen architectures (like Nvidia’s GB200) are pushing rack power density toward 130kW–190kW+. These loads require a shift to high-voltage central busbars and DC power distribution to prevent voltage sags and hardware damage.

RELL has been a high-voltage, high-frequency power management specialist for over 70 years. The market largely ignores them because their legacy revenue came from old industrial heating, vacuum tubes, and radar. However, the exact same engineering expertise required for those legacy systems is what’s needed to deliver stable, high-voltage power conversion to modern AI data center racks.

2. The Silicon Transition
They are actively expanding. In mid-May, RELL announced a global strategic partnership with NIS Power to expand their Silicon Carbide (SiC) power semiconductor product line. SiC is key for handling high-voltage, high-efficiency power conversion in next-gen data infrastructure.

3. The Numbers
Unlike most AI or semiconductor names trading at crazy multiples, RELL looks reasonably valued because it's still buried in the old industrial category.
\- Market Cap: It's a small-cap company, currently valued around $255M.
\- The Backlog: In their latest Q3 call, management noted their backlog rose 11.4% to $151M (a 3-year high), driven explicitly by their power management and semiconductor equipment segments.
\- Valuation: If you take the $255M market cap and subtract their \~$30M in cash, the enterprise value is around $225M. This puts their EV/Backlog ratio at just 1.49x.
\- Balance Sheet: They have virtually zero debt, \~$30M in cash, and over $100M in inventory, trading at a P/B ratio around 1.67x.

To me, it looks like a dusty 70-year-old manufacturer that is quietly positioning itself as a critical power-quality provider for the semiconductor space, while trading at a deep value valuation.

Would love to hear your thoughts. Is anyone else tracking the high-voltage power angle for data centers, or has anyone looked into RELL's specific supply chain relationships?