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Board to Board Connector
Industrial, IT Datacom
Every SMT production line deals with placement tolerances. Every PCB warps slightly after reflow. Every system experiences thermal expansion across operating temperature ranges.
With rigid BTB connectors, these realities translate into one thing: mechanical stress on solder joints. That stress doesn’t show up during initial testing. It shows up six months later, in the field, as intermittent failures that cost thousands to diagnose and replace.
Floating connectors exist precisely to eliminate that risk – by absorbing misalignment internally, not passing it to the PCB pads.
Instead of fixing contacts into a stiff shell, we suspend them with a dedicated spring mechanism. This allows ±0.8mm movement in X/Y axes during mating, and continuous tracking during vibration. The result: zero bending load on solder joints, even when board-to-board alignment drifts by up to half a millimetre.
Standard 3µ" gold on the contact area delivers reliable low resistance for 50–100 mating cycles – sufficient for most production and maintenance routines. But we offer a full range from Gold Flash to 30µ" so you can scale durability to your actual usage. The nickel underplate (50µ" min.) is non-negotiable: it stops copper migration and preserves contact integrity over years of operation.
Liquid Crystal Polymer doesn’t soften or absorb moisture like standard nylons. It holds its shape through 260°C reflow, maintains UL94V‑0 flammability rating, and keeps its dimensional stability from -40°C to +125°C. That means fewer coplanarity issues, less tombstoning, and no blistering.
Specification | Value | Why It Matters |
|---|---|---|
Current rating | 0.5A per contact | Sufficient for most control signals; derating not required for typical densities |
Voltage rating | 50V | Covers industrial I/O, automotive sensors, and logic-level buses |
Contact resistance | ≤120mΩ | Stable even after thermal cycling – a sign of consistent spring pressure |
Insulation resistance | ≥500MΩ | Prevents leakage in humid environments; critical for ADAS and medical |
Operating temp | -40°C to +125°C | Full automotive grade; no derating needed across the range |
These numbers aren’t just pass/fail criteria – they define the connector’s behaviour under real-world conditions. For example, the low contact resistance is achieved not by brute force but by maintaining normal force through the spring, even when the housing expands or contracts.
Choose your configuration based on three simple decisions:
From 10 to 120 positions (dual‑row, even counts). Common builds: 40‑pin for compact ECUs, 60‑pin for gateway modules, 80‑pin for large control boards.
Available mating heights: 6.50mm, 8.00mm, 9.00mm, 9.75mm, and 12.75mm. The corresponding receptacle heights (H1/H2/H3) are pre‑calculated – we handle the mechanical fit so you don’t have to.
Gold Flash or 1µ" – limited cycles, cost‑sensitive
3µ" – the sweet spot for most industrial and automotive
5µ" to 15µ" – frequent maintenance or field replacements
30µ" – mission‑critical or extreme environments
Automotive domain controllers – Multiple PCBs stacked inside a single housing. The floating mechanism absorbs differential expansion between aluminium and FR‑4 substrates, preventing solder cracks that plague rigid connectors in temperature‑cycling tests.
Industrial robot arms – Constant articulation transmits vibration through every joint. Floating contacts track micro‑movements continuously, eliminating fretting corrosion that would otherwise degrade signal integrity after a few million cycles.
Outdoor LED modules – Large panels expand and contract with sunlight; assembly tolerances accumulate over dozens of tiles. Floating connectors allow each tile to be replaced individually without stressing adjacent connections.
Medical patient monitors – Portable devices undergo drop tests and daily handling. The floating design protects against shock‑induced momentary disconnections, ensuring uninterrupted monitoring.
The part number format is straightforward, but the real flexibility lies in what’s not printed on the label:
Pin count, plating grade, and housing height are all selectable.
Tape‑and‑reel packaging is standard for all variants – no extra lead time.
Non‑standard heights or pin counts? We’ve tooled for that too. CONSHARE maintains a library of custom tool inserts, so deviations don’t always require a new mould.
Order example: Specify pin count + plating + height + packaging, and we’ll confirm availability within 24 hours.
Yes – and that’s exactly when floating connectors prove their value. Rigid connectors would fight each other; floating ones share the tolerance budget. Just ensure the total travel of each connector’s spring is not exceeded by the sum of placement errors.
No. The contact path remains continuous and shielded by the spring geometry. We’ve tested these connectors for typical LVDS, CAN, and Ethernet signals up to 1 Gbps without significant insertion loss or crosstalk increase.
We provide a verified footprint with ±0.05mm board tolerance. Following it ensures optimal solder fillet formation and avoids pad‑to‑terminal mismatch that could limit floating travel.
We don’t just ship components – we partner on your design from concept to production. Our engineering team reviews PCB layouts, suggests plating upgrades for harsh environments, and even validates prototypes under your actual vibration profile.
With CONSHARE, you get:
Faster root‑cause analysis – we’ve seen most misalignment issues before and know the fixes.
Shorter lead times for non‑stock configurations – our flexible manufacturing line adapts quickly.
Consistent quality – every reel is sampled for coplanarity, contact force, and solderability before shipping.
