BELFA vs TEL: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: TEL is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. BELFA and TEL share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined BELFA and TEL exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Bel Fuse Inc. designs and manufactures electronic components and systems across three broad areas: power solutions and protection (front-end power, DC-DC converters, circuit protection), connectivity solutions (connectors, cable assemblies, and interconnect for harsh environments), and magnetic solutions (integrated connector modules, transformers, and inductors). Founded in 1949 and based in Jersey City, the company sells into networking, defense, aerospace, commercial aviation, space, industrial, and rail markets, and in 2026 began realigning from a product-centric to an end-market-centric organization. Its shares trade in two classes, with BELFA being the Class A stock (which carries voting rights but is more thinly traded and pays a slightly lower dividend than the Class B BELFB shares).

Full BELFA guide

TE Connectivity (NYSE: TEL) designs and manufactures connectors, sensors, and interconnect systems that move power and data through cars, factories, data centers, aircraft, appliances, and medical devices. It is the number one connector maker globally by revenue, ahead of Amphenol and Molex, and organizes its business primarily around two segments: Transportation Solutions (automotive, commercial vehicles, sensors) and Industrial Solutions (industrial equipment, energy, aerospace and defense, medical, and the fast-growing digital data networks unit that sells into AI data centers). The company is domiciled in Ireland and sells to essentially every major automaker and industrial and hyperscale customer.

Full TEL guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• BELFA drivers: Defense, aerospace, and space demand; AI and data-center infrastructure.
• TEL drivers: AI data center connectivity; Vehicle electrification and content growth.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Bel Fuse operates in cyclical component markets where orders can swing quickly with customer inventory corrections, so the recent 17% growth rate may not persist. For TEL, tEL's largest markets, automotive and industrial, are cyclical, so a downturn in vehicle production or capital spending can pressure revenue and margins.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick BELFA if you believe its drivers more; TEL if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the BELFA and TEL guides.

BELFA. Revenue and margins accelerated in early 2026 on defense, aerospace, and data-center demand, and management guided second-quarter sales to roughly $195 million to $215 million. The valuation expanded meaningfully over the same period, with trailing price-to-earnings multiples reported in the mid-30s and higher depending on the measure. Figures are approximate and as of the dates shown, and Class A (BELFA) trades at different volume and dividend levels than Class B (BELFB).

TEL. TEL trades around $200 per share for a market cap near $59 billion, at roughly 20 times earnings, a valuation typical of a quality industrial compounder rather than a cheap cyclical. It generates strong free cash flow (around $1 billion in a recent quarter) and yields about 1.5 percent. The premium reflects record AI-driven orders and steady margin expansion.

Headline figures (approximate, May 2026): BELFA shows revenue (ttm) ~$0.70 billion, q1 2026 net sales ~$178.5 million (up ~17% YoY), q1 2026 gross margin ~39%, q1 2026 diluted eps (class b) ~$0.91 GAAP; TEL shows revenue (ttm) ~$17B, quarterly sales (recent) ~$4.5B, adjusted operating margin ~20%, market cap ~$59B.

BELFA and TEL are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined BELFA and TEL exposure against your real portfolio. It is not an investment adviser.