"Okay, so what exactly is on my wifi?"
That's the question that started all of this. It was early 2025, and I was poking around our network admin panel out of pure boredom—a new printer had just been added, and I wanted to make sure nobody had plugged anything strange into the office network. What I found instead was an access point that kept dropping connections, and a trail of lessons about Kemet Electronics Corporation that I did not expect when I sat down that afternoon.
Let me be clear about who's talking: I'm the office administrator for a 60-person company. I manage all our equipment ordering—roughly $120,000 a year across about eight vendors, maybe 70 orders total. I report to both operations and finance. I am not an engineer, and I didn't know what a capacitor was before all of this.
So, What Is on My WiFi?
The surface problem was simple. Our access point, about 14 months old, would drop every device for two or three minutes at a time. Always at the worst possible moment, naturally. Our IT person—who is also our facilities manager, we're a small operation—said the board looked like it was running hot. We reset it, and it behaved for maybe a month. Then it died.
The vendor's explanation was "aging hardware."
A 14-month-old access point is not aging hardware. That's like telling me a car with 15,000 miles has hit the end of its design life. I pushed back on that, which is how I ended up with a dead access point on my desk and an unexpected crash course in what actually goes into the networking gear we buy.
The Real Problem Wasn't the WiFi
Here's what I now know, explained the way someone had to explain it to me.
Capacitors are small components that store and release tiny amounts of electrical energy. They smooth out power and keep circuits stable, and they're in basically everything that plugs into a wall—including every router, access point, and switch in your office. They're small and cheap. And when they're not made properly, they fail. And when they fail, they take the whole device down with them.
This is the blind spot I'd been walking around with for five years: most buyers focus on the brand on the outside of the device and completely miss the components inside. The question everyone asks is "which access point should we buy?" The question they should be asking is "whose capacitors are inside it?"
When our IT guy pulled the dead unit apart, he pointed at a little component on the board. "Tantalum capacitor," he said. "Probably a Kemet. They're all over networking gear."
I literally asked, "Kemet who?"
A Quick Company Overview (the non-boring version)
Kemet Electronics Corporation is one of those companies you've never heard of that's quietly inside almost everything you use. They make ceramic capacitors, tantalum capacitors, relays, connectors, and MLCCs—those tiny multilayer ceramic capacitors that look like grains of sand but are in every phone, laptop, and WiFi device on the market.
They're based in South Carolina, they've been doing this for decades, and in 2020 the Taiwanese company Yageo completed its acquisition of them. For anyone who's never looked at the passive components industry—which was me until recently—Kemet is one of the established names. Historically they're a big deal in tantalum specifically. Tantalum is a tricky material, and doing it right means tight process control. Kemet's tantalum parts have been produced to military spec—MIL-PRF-39003, if you want the acronym—for years. I used to skim past that kind of detail. I don't anymore.
The Order That Almost Went Wrong
The replacement board for our access point called for a specific component: a Kemet 3310 capacitor. I had never ordered a single capacitor in my life. I didn't even know capacitors came in part numbers.
I searched the part, and there it was: the same number, listed by a marketplace seller for about half of what the authorized distributors were quoting. Looked identical. Free shipping. Two-day delivery. I almost clicked buy.
But I remembered something. In 2023, I found a great price on office chairs—$80 per chair cheaper than our regular supplier. The chairs were fine. The problem was the seller couldn't provide a proper invoice, just a handwritten receipt. Finance rejected the expense report, and I ate nearly $960 out of the department budget. Now I verify a vendor's paperwork before I order, not after.
So I checked whether that marketplace seller was an authorized Kemet distributor.
They weren't.
The part might have been fine. Or it might have been a surplus reject with no traceability. What I mean is: no datasheet history, no lot number you could verify, no way to know it actually met the spec. For a capacitor that runs 24/7 inside a network device, that's a gamble I'm done taking.
What a $220 Discount Actually Cost
Here's the part that still annoys me. The original access point—the one that died—cost about $220 less than the premium option we'd passed on. Seemed like a smart call at the time.
The real bill came later:
- Emergency replacement access point: $340
- Our IT person's time, roughly 15 hours across the whole saga: about $450 if you count the hourly rate
- A client demo in March 2024 that died mid-presentation when the network dropped: it cost us credibility, and the reschedule took three weeks
- The rush-bought "premium" replacement we got afterward: $280, because nobody wanted to do this again
So, roughly $1,100 in direct costs—okay, $1,070, give or take the IT hours I'm estimating—all to save $220 on the original unit. The math is embarrassing.
The failure in March 2024 changed how I think about equipment purchases. And when I put the dead unit side by side with the replacement, the difference was obvious: the cheap one had a swollen capacitor and a scorch mark on the board. The replacement was still running with zero issues. Same room, same workload, same power. The only difference was what was underneath the plastic shell.
Looking back, I should have asked what components were inside before I bought anything. At the time, the brand name and the reviews seemed like enough. They weren't.
What I Do Now
I'm not going to turn this into a ten-step procurement framework. But here's what changed for me.
I ask what's inside. Before I order network gear, I look for known component brands in the specs. If they're not listed, I ask the distributor. A good distributor will tell you.
I buy from authorized sources. Kemet maintains a network of authorized distributors, and they publish the list. If a listing says "compatible" or "equivalent," I treat it as a red flag until I've verified who's actually selling it.
I stopped chasing the lowest unit price on critical stuff. The genuine Kemet 3310 cost me about $3.40, plus a $20 order minimum, from an authorized distributor (prices I checked in late January 2025—verify current ones before you commit). The mystery listing was $1.60 with free shipping. The difference paid for a real invoice, a real part number, and the knowledge that the part actually met spec. That paperwork alone is worth it.
I keep spares of the things that fail. One capacitor, one relay, one backup access point in the supply closet. (Note to self: I still haven't bought that spare relay. Add it to this week's order.)
Bottom line: I just wanted to know what was on my wifi. It turned out the better question is what's inside the things on my wifi. In our case, the answer was a Kemet capacitor—and I'm honestly glad I found out before the next device died.
