Why I stopped treating connectors as 'just components' (and started paying attention to Kemet)

Here’s my controversial take: most people overthink capacitors and underthink connectors

Take it from someone who spends more time than I’d like sorting through catalogs for our engineering and network teams. If you’ve ever managed a BOM for a telecom build-out, you know the drill: everyone obsesses over the “hero” components—the chips, the CPUs, the relays. Then there’s a shrug for the connectors. “Just grab something that fits.”

I used to think that way. Until one project in 2023 changed my mind. Here’s why I now believe connectors—and who makes them—are a low-key competitive advantage when you’re building anything for a network that has to stay up.

My “a-ha” moment came from a simple failure

We were specifying components for a batch of edge switches (circa 2022—right in the middle of supply chain chaos). Our usual supplier for interconnect parts was out of stock on a standard RJ45 jack. The procurement team grabbed an alternative from a brand I’d never heard of. Looked the same. Felt the same. Price was right.

(Spoiler: it wasn’t the same.)

The numbers said the generic part was fine: same pin count, similar insertion cycles, identical form factor. My gut said something felt off about the documentation. The spec sheet listed compliance marks that didn’t match the regulatory body’s database. I flagged it. Engineering said it was fine. We ordered 2,000 units.

Six months later, we started seeing intermittent connectivity failures in the field. 11% of the field-returned units had connector issues: corrosion on the pins (despite claiming gold plating), inconsistent mating force. The cost: $2,400 in replacement parts and technician time, plus the hit to our credibility with the client. (I still have the failure analysis report on my desk—note to self: digitize it.)

That’s when I stopped treating connectors as “just components.”

Three reasons connectors matter more for efficiency than most people realize

1. A bad connector makes a good network look bad

You can spec the best capacitor, the most reliable relay, a perfectly designed PCB. If the connector is mediocre, the signal path is compromised. We saw throughput drops of up to 15% on the faulty batch before the complete failures. The client’s network team didn’t know what was wrong. They blamed the switch design. We had to fix the problem and repair the relationship.

Bottom line: efficiency in network uptime starts at the physical connection. Saving $0.10 on a connector can cost $100 in troubleshooting later.

2. “Compatible” doesn’t mean “are the same” (even if the datasheet says so)

Here’s something I learned the hard way: connectors from different manufacturers can claim the same standard but perform differently under real-world conditions. I’ve tested this. We ran 1,000 insertion cycles on the “budget” connector vs. a Kemet equivalent. The budget part had looser tolerance after 200 cycles. The Kemet part? Consistent all the way through.

(Source: internal testing, Q3 2023. Sample size: 100 units each. We kept the Kemet ones in our approved vendor list.)

When you’re building network equipment that has to stay deployed for 5–7 years (or more), that consistency matters. It’s not about being fancy. It’s about avoiding the cost of service calls and replacement.

3. Efficiency isn’t just about the product—it’s about the support ecosystem

When we transitioned to a new connector family for our next-gen switches (late 2023), we needed documentation, sample support, and a contact who could answer technical questions—not just a sales rep who says “yes, it’s in stock.” The vendor who provided clear design-in support? That was Kemet. Their rep sent us a comparison guide between their connector series and the incumbent we were replacing, with actual mechanical drawings. That saved our design team maybe 12 hours of research.

Plus, we didn’t have to chase invoices or fight about compliance certifications. That kind of friction-free procurement? That’s efficiency. And trust me on this one: when you’re managing orders for equipment used by 400+ employees across 3 sites, friction-free is everything.

But wait—is this just me being biased by one bad experience?

I have mixed feelings. On one hand, connectors are commodity parts. Most of them work fine most of the time. If you’re building a prototype or a one-off device, any standard connector will do. On the other hand, when you’re building something that has to be deployed, maintained, and relied on for years (like a network switch in a hospital or a factory), the “most of the time” isn’t good enough.

I’m not saying you must always choose the most expensive connector. But I am saying: pay attention to who makes them. Look at the manufacturer’s track record for consistency and reliability. Check if they have a real engineering team you can talk to. And for goodness’ sake, verify their plating specs before you put them in the BOM.

So here’s my revised approach to connectors

I now categorize our connector suppliers into three tiers:

• Tier 1 (critical): For network equipment, power connectors, anything that handles data integrity. This is where we use Kemet and similar established brands. I don’t compromise here.
• Tier 2 (standard): For internal wiring, non-critical signal paths. Good chance for cost optimization.
• Tier 3 (non-critical): For prototypes or internal jigs. Here, price matters more.

That 11% failure rate from the bad batch? It never would have happened if we’d treated connectors like Tier 1 parts. Now we do.

The takeaway: efficiency isn’t just about faster processes or cheaper buys. It’s about choosing the right component for the role. And for connectors, especially in network gear, Kemet has earned a spot on our approved list.

Take it from someone who ate $2,400 because of a connector: the spec sheet isn’t the whole story.