Amphenol EconoStik 2.54mm Pin Header — Through-Hole & SMT Interconnect System

Amphenol's EconoStik family is a 2.54 mm (0.100") pitch pin header line designed for board-to-board and wire-to-board connections where cost pressure exists but mechanical reliability cannot be compromised. The series covers single-row and dual-row configurations in through-hole and surface-mount terminations, with mating options that include standard female header receptacles, crimp housings, and insulation-displacement (IDC) ribbon connectors.

What These Headers Solve

When you lay out a two-board stack or bring sensor wires onto a control PCB, the EconoStik gives you a standardized 0.100" grid that matches virtually every prototyping platform, ribbon cable, and Dupont-style crimp housing on the market. The phosphor-bronze contacts use a dual-beam box design in the receptacle half — you get four points of contact per pin rather than the two-point wiping contact you would see in a stamped leaf-spring socket. This matters in vibration environments: a two-point contact can micro-fret under thermal cycling; the box contact maintains <20 mΩ even after 200 mating cycles.

Compared to Harwin's M20 series at the same pitch, the EconoStik runs about 15–20% lower per-position cost while matching the same UL 94V-0 housing rating. The trade-off: Harwin offers gold flash on every variant by default, whereas EconoStik defaults to tin over nickel with selective gold as a suffix option. For production volumes where the connector is mated once at assembly and never touched again, tin at $0.003–0.006 per position versus gold at $0.012–0.020 per position adds up quickly across 100,000 units.

Typical Applications

• Industrial motor drives — 6-pin to 20-pin dual-row headers carrying encoder feedback, Hall sensor signals, and brake control between the drive board and the power stage. The 3 A per-pin rating (20 AWG, 30°C rise) handles most low-voltage control wiring without needing a separate terminal block.
• Test and measurement fixtures — Single-row breakaway headers allow you to snap off exactly the position count needed for a custom bed-of-nails or programming jig. Engineers stock the 40-position strip and break to length on the bench.
• Embedded systems and single-board computers — The 2×10, 2×13, and 2×20 configurations match Raspberry Pi HAT and Arduino shield pinouts exactly. EconoStik's extended-tail variants (4.6 mm post length instead of the standard 3.0 mm) give enough protrusion for a reliable solder fillet on 1.6 mm FR-4 without risking cold joints on the far side.
• Appliance control boards — Washers, dryers, and HVAC controllers use the 2×5 and 2×8 shrouded variants with polarization slots. The shroud prevents reversed mating in the field, which is a common service call generator when an unshrouded header gets plugged backward.

Key Technical Specifications

How to Select a Variant

Start with the row count: single-row for signal-only, dual-row when you need more conductors in the same board real estate or when the connector also serves as a mechanical key (two rows resist rotational misalignment better than one).

Pick termination based on your assembly process. Through-hole is the default for hand-soldered and wave-soldered boards. If your board is fully SMT on both sides and you are trying to avoid a secondary wave step, use the SMT gull-wing variant — but be aware the SMT tail sits flat on the pad and the plastic housing is LCP rated for lead-free reflow (260°C peak, 10 seconds). PBT through-hole housings will soften above 220°C and should not go through reflow.

Plating choice comes down to mating frequency. Tin is fine for one-shot assembly connections. If the header will be disconnected more than 50 times over the product's life — test jigs, field-replaceable modules, programming headers — go with selective gold flash. The gold does not eliminate oxidation entirely (it is flash, not 30 µin hard gold) but it prevents the tin-oxide layer that drives contact resistance above 50 mΩ after repeated wipe cycles.

Tail length matters for through-hole: the standard 3.0 mm post protrudes about 1.4 mm beyond a 1.6 mm board, enough for a solder fillet but not much grip for a wire-wrap or hand-soldered flying lead. The extended 4.6 mm tail gives you more working length on the solder side. The short 2.3 mm tail sits nearly flush with the bottom of a 1.6 mm board — useful when clearance to an enclosure wall is tight.

Ordering and Availability

EconoStik headers ship in tubes (standard) or tape-and-reel for pick-and-place (SMT variants only). Minimum order quantities start at one tube (typically 32–46 pieces depending on position count), with volume pricing breaking at 1,000 and 10,000 pieces. Lead times on standard tin-plated through-hole configurations run 2–4 weeks from Amphenol distribution; selective gold and SMT variants may extend to 6–8 weeks. The series competes directly with TE Connectivity's AMPMODU Mod II and Samtec's TSW/TSSW lines — EconoStik undercuts both on per-position cost for volumes above 5,000 pieces while matching the same PCB footprint and mating interface dimensions, making it a drop-in second-source candidate on most layouts.