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Board to Board Connector
Industrial, IT Datacom
In high-density PCB designs, even the smallest misalignment can cascade into costly production failures. Traditional fixed-pitch connectors demand absolute positioning precision—tolerances measured in microns across multiple components, mounting holes, and pick-and-place machinery. When these variables stack up, what should be a straightforward board-to-board connection becomes a yield bottleneck.
CONSHARE engineered this 0.5mm pitch floating female connector to absorb those cumulative tolerances before they become problems. Built with SMT compatibility, LCP high-temperature housing, and 3μ" gold-plated contacts, it doesn't just connect boards—it protects your assembly yield, reduces rework costs, and extends service life in demanding environments.
Available in 30-PIN and 80-PIN configurations, both variants share the same core floating architecture and material specification, giving you design consistency across projects with different I/O density requirements.
The defining feature of this connector isn't what it is—it's what it does during assembly. The contact system is designed with controlled lateral movement, so the housing can shift slightly within its mounting footprint during mating. This means:
X/Y axis misalignment compensation absorbs pick-and-place drift, PCB dimensional variations, and screw-hole tolerances without stressing the solder joints
Reduced insertion force compared to fixed connectors, lowering the risk of board flex or component damage during automated mating
Multi-connector board compatibility—when you're mating two boards with several connectors in parallel, floating design eliminates the "binding" effect that happens with fixed-pitch parts
For production teams, this translates directly to fewer assembly failures, less rework, and higher first-pass yield—especially valuable in high-volume SMT lines where every percentage point of yield matters.
Not all connector housings survive modern soldering processes. Cheaper alternatives using PBT or nylon can blister, warp, or suffer dimensional shift after a single reflow cycle, leading to misalignment issues down the line.
This connector uses Liquid Crystal Polymer (LCP) housing material, which is purpose-built for high-temperature SMT environments:
Withstands peak reflow temperatures up to 260°C without deformation or blistering
Maintains dimensional stability through multiple thermal cycles—critical for double-sided boards that go through reflow twice
Excellent dielectric properties and moisture resistance for long-term insulation reliability
UL94 V-0 flammability rating for compliance with safety standards
If your product goes through lead-free reflow or operates in elevated-temperature environments, LCP isn't a luxury—it's a requirement for long-term mechanical and electrical integrity.
Gold plating thickness is one of the most misunderstood connector specifications. Too thin, and you risk early wear and contact resistance drift. Too thick, and you're paying for performance you'll never use.
At 3 microinches (approximately 0.076μm), this connector hits the engineering sweet spot for most commercial and industrial applications:
Stable low contact resistance across temperature cycles and environmental exposure—gold doesn't oxidize, so your signal integrity stays consistent over time
Sufficient durability for typical mating cycles in production and field service scenarios
Cost efficiency compared to heavier gold plating, without sacrificing the corrosion resistance that makes gold valuable in the first place
Nickel underlayer provides a barrier against base-metal diffusion and adds mechanical support to the gold surface
For applications where the connector mates infrequently but needs reliable performance over years of service, 3μ" gold is the practical choice.
Parameter | 30-Position Variant | 80-Position Variant |
|---|---|---|
Contact Arrangement | Single row, 30 positions | Dual row, 80 positions (40+40) |
Typical Current Rating | 0.5A per contact | 0.5A per contact |
Recommended For | Lower-density I/O, sensor interfaces, control signals | High-density signal paths, parallel data buses, mixed-signal designs |
Board Space Footprint | Compact, minimal X-axis space | Wider footprint, higher pin density per unit length |
Mating Guide Feature | Yes, chamfered housing edges | Yes, chamfered housing edges + enhanced alignment posts |
SMT Compatibility | Tape-and-reel packaging, pick-and-place ready | Tape-and-reel packaging, pick-and-place ready |
Design tip: If you're working on a platform with scalable I/O requirements, both variants share the same pitch and mating height, so you can standardize your PCB footprint and populate only the positions you need for each SKU.
Choosing the wrong board-to-board connector is expensive—you either over-engineer and pay too much, or under-engineer and pay for it in field failures. Use this decision framework to validate your selection:
You're using automated SMT assembly and need a connector that survives standard reflow profiles without post-soldering dimensional shift
Your design has multiple board-to-board connectors in parallel and you're concerned about tolerance stack-up causing binding or mis-mating
Your product operates in temperatures above 85°C or sees significant thermal cycling during its service life
Signal integrity matters—you're transmitting low-level signals where even small increases in contact resistance could cause measurement errors or data corruption
You need a balance between reliability and cost in a commercial or light-industrial application
Your application requires high mating cycles (hundreds or thousands of insertions)—consider heavier gold plating or a different contact geometry
You need high-current power delivery (more than 1A per pin)—look for connectors with dedicated power contacts or higher current ratings
Your product operates in harsh outdoor or corrosive environments (salt spray, chemical exposure)—consider sealed connector options with thicker plating
You're implementing ultra-high-speed differential signaling (multi-Gbps SerDes)—verify impedance matching and signal integrity specifications for your specific data rate
In PLC modules, sensor interface boards, and industrial I/O cards, connectors face two enemies: thermal cycling from equipment on/off cycles, and the cumulative tolerance stack-up that comes with modular card cage designs. The floating structure handles the alignment issues, while the LCP housing and gold contacts maintain performance through years of thermal stress.
Real-world example: A factory automation customer switched from fixed 0.5mm pitch connectors to our floating variant and saw their board-mating failure rate drop from 2.3% to under 0.4% on their production line. The savings from reduced rework alone paid for the connector cost difference in the first production run.
Precision measurement equipment demands stable, low-contact-resistance connections that don't drift over time. Whether it's a diagnostic instrument, lab analyzer, or patient monitoring device, the 3μ" gold plating ensures consistent signal paths, while the LCP housing survives the multiple reflow cycles common in high-reliability medical PCB assemblies.
For compact consumer devices where board space is at a premium, 0.5mm pitch delivers the density needed for slim form factors. The SMT packaging integrates seamlessly into high-volume automated production, and the floating design forgives the minor alignment variations that are inevitable in mass-produced consumer products.
In line cards, interface modules, and telecom infrastructure gear, designers often use multiple board-to-board connectors in parallel to handle high pin counts. The floating architecture is particularly valuable here—it prevents the mechanical stress that occurs when several fixed connectors try to mate simultaneously with slight positional errors.
A: The design compensates for typical X/Y axis variations encountered in standard SMT assembly processes. The exact range depends on pin count and mating height, but it's engineered to handle the cumulative tolerances from PCB fabrication, pick-and-place placement, and screw mounting without putting excessive stress on the solder joints or contact beams.
A: For most commercial and light-industrial applications where mating cycles are infrequent (production assembly plus occasional field service), 3μ" is more than sufficient. Gold's primary value is corrosion resistance and stable contact resistance—not mechanical wear resistance. If your application requires hundreds of mating cycles, you may want to evaluate thicker gold options or consider that the connector's mechanical durability is typically limited by the contact beam fatigue, not the gold plating wear.
A: Yes—the LCP housing material is specifically selected for its ability to maintain dimensional stability through multiple high-temperature reflow cycles. This is particularly important for double-sided PCB assemblies where the board goes through reflow twice, or for products that undergo rework involving localized heating.
A: Standard fixed-pitch connectors have the housing rigidly attached to the PCB with no lateral movement. Floating connectors allow the contact housing to shift slightly within its mounting envelope. This might sound like a small difference, but it has a huge impact on assembly yield when you're dealing with fine pitches and multiple connectors on the same board pair. It's the difference between designing for perfect alignment and designing for real-world manufacturing tolerances.
A: We work with customers on application-specific configurations when volumes justify tooling investment. For standard requirements, the 30-position and 80-position variants cover the most common density needs for 0.5mm pitch floating designs.
Every connector that leaves our facility goes through incoming material verification, in-process dimensional checks, and final electrical testing. We don't just sell components—we stand behind the performance of every part we ship.
Whether you're building a few hundred prototypes or scaling to mass production, CONSHARE's 0.5mm pitch floating female connector delivers the assembly forgiveness, thermal stability, and contact reliability your design needs—without paying for features you'll never use.
