337-086-560-268

FAQFrequently Asked Questions

• Can the Mercury 337-086-560-268 86-position card edge connector be used with PCB edge cards thicker than 0.070 inches? No. The Mercury 337-086-560-268 is specified for card thickness between 0.054" and 0.070" (1.37mm to 1.78mm). Using thicker cards can cause excessive contact pressure, deformation of the cantilever contacts, or incomplete seating. Conversely, cards thinner than 0.054" may result in insufficient contact force and intermittent electrical connections. Always verify your edge card thickness is within specification before deployment.
• What is the pitch spacing on the Mercury 337-086-560-268, and does it support mixed-signal or high-speed differential routing? The Mercury 337-086-560-268 has a 0.156" (3.96mm) pitch with 86 positions arranged in a dual-edge, dual-readout configuration (43 positions per row × 2 rows). While the pitch accommodates basic high-density routing, the cantilever contact design and 10.0µin gold plating are optimized for general-purpose 5V/12V logic and power distribution rather than impedance-controlled differential signaling. For modern high-speed protocols (PCIe, Ethernet, LVDS), evaluate whether the transition time and loss characteristics of this connector meet your signal integrity requirements.
• How does the Mercury 337-086-560-268 compare to modern alternatives like Samtec or Harting backplane connectors for new industrial designs? The Mercury 337-086-560-268 is a legacy connector suitable for board extenders, CompactPCI, and VME-style form factors common in 1990s–2000s equipment. Modern alternatives such as Samtec SEARAY or Harting ha-VIF series offer finer pitch (0.100" or smaller), higher contact density, better EMI shielding, and improved signal integrity for contemporary applications. If designing new equipment, migration to modern connectors reduces card size, improves thermal management, and enables higher data rates. However, if sustaining older systems, the 337-086-560-268 remains cost-effective for replacement and repair.
• What contact finish thickness does the Mercury 337-086-560-268 provide, and how does it affect mating cycle life? The Mercury 337-086-560-268 uses a 10.0µin (0.25µm) gold contact finish over a copper alloy base. This thin plating is typical for low-cost, low-mating-cycle connectors designed for permanent or semi-permanent installation. At 10.0µin, the gold layer can wear through after 50–200 mating cycles, depending on contact force and insertion speed. For applications requiring frequent hot-swapping or hot-insertion, consider connectors with thicker gold plating (20–50µin) or alternative base materials (nickel), which extend contact life and reduce contact resistance drift over repeated matings.
• Is the Mercury 337-086-560-268 suitable for applications with operating temperatures above 105°C or in harsh industrial environments? No. The Mercury 337-086-560-268 is rated for -40°C to +105°C operation, with polyester thermoplastic insulation. The polyester material begins softening above 110°C and may lose mechanical rigidity in sustained high-temperature environments. Additionally, in harsh industrial settings with thermal cycling, vibration, or humidity extremes, the thin gold plating and cantilever contact design may experience accelerated wear or contact resistance increase. For harsh or high-temperature environments, evaluate ceramic-body connectors or designs with conformal coating and superior moisture barriers.
• Can the Mercury 337-086-560-268 be retrofitted into existing systems originally designed for Augat or AMP card edge connectors? Retrofitting depends on mechanical and electrical pin-assignment compatibility. While the 337-086-560-268 shares a 0.156" pitch common to many legacy systems, other parameters differ: the dual-edge dual-readout configuration may not align with older single-readout designs, flange mounting features vary between manufacturers, and contact arrangements (43 per row vs. alternative pin counts) must match. Before retrofitting, cross-reference the original PCB layout and connector datasheet against the 337-086-560-268 specifications. Misalignment can cause bent contacts or short circuits. Direct electrical substitution is not guaranteed without detailed mechanical and schematic review.
• What is the maximum current rating for individual contacts on the Mercury 337-086-560-268, and are there power distribution considerations for mixed-signal designs? The Mercury 337-086-560-268 datasheet does not provide explicit per-contact current ratings; this is typical for general-purpose connector specifications. Contact current capacity is typically 2–5A per contact depending on ambient temperature, duty cycle, and contact resistance. In mixed-signal designs, power and signal routing should be segregated: dedicate outer or inner positions to power rails, minimize high-frequency signal paths near power return planes, and ensure adequate ground return paths through multiple contacts to reduce loop inductance. Without explicit current derating curves, thermal simulation or prototype validation is recommended for high-power applications.
• Does the Mercury 337-086-560-268 require any special handling or soldering procedures due to its gold plating and contact geometry? Yes. The thin 10.0µin gold plating over copper alloy is sensitive to mechanical abrasion during assembly. During solder reflow, avoid excessive thermal cycling or high peak temperatures above the polyester insulation Tg (typically ~120°C for polyester). The solder termination should use standard lead-free (SAC305) or lead-based (Sn63/Pb37) processes with appropriate flux and cleaning. Cantilever contacts are prone to solder bridging if flux residue accumulates between contact tines; inspect under magnification post-assembly. Use conformal coating if operating in moisture-rich or corrosive environments to prevent contact resistance increase over time.
• How does the Mercury 337-086-560-268 handle EMI/RFI in environments with high-frequency switching or RF transmission? The Mercury 337-086-560-268 offers no integrated shielding or EMI filtering. The dual-edge female configuration inherently has some degree of mutual shielding between edge cards, but without internal shields or guard traces, high-frequency currents and radiated emissions will couple across the 86-position connector. For EMI-sensitive applications, implement filtered power entry, segregate analog and digital signal routing, add series or shunt filtering components close to the connector, and use grounding positions strategically. In RF environments above 100 MHz, evaluate shielded or coaxial connectors to meet EMC regulations.
• What is the expected operational lifetime of the Mercury 337-086-560-268 in a stationary, climate-controlled data center environment? In a stable, climate-controlled environment (20–25°C, 45–60% RH) with minimal vibration and no hot-swapping, the Mercury 337-086-560-268 typically operates reliably for 15–25 years without contact degradation. The primary aging mechanisms are stress-induced creep of the polyester insulation and slow oxidation of the thin gold layer under residual moisture. After this period, contact resistance may increase incrementally, and dielectric breakdown risk rises. Periodic in-service testing (resistance measurement, insulation resistance checks) can detect degradation before failure. For mission-critical systems, plan component-level maintenance or replacement cycles accordingly.
• Can the Mercury 337-086-560-268 be used as a design-in choice for new CompactPCI or VME backplane applications, or should it be reserved for legacy system repair only? The Mercury 337-086-560-268 should be reserved for legacy system repair and sustainability. CompactPCI and VME standards have evolved to support higher data rates, smaller form factors, and improved signal integrity. New CompactPCI Compact-3 and VME64x systems typically specify connectors with finer pitch (0.100" or smaller), better shielding, and documented EMI/signal-integrity performance. Designing new products around the 337-086-560-268 creates technical debt, limits scalability, and increases obsolescence risk. Use it only when direct mechanical or electrical compatibility with existing backplanes is mandatory.
• What are the RoHS and REACH compliance implications for the Mercury 337-086-560-268 in EU and global procurement? The Mercury 337-086-560-268 is RoHS3 compliant and REACH unaffected. This means it contains no restricted substances (Pb, Cd, Cr(VI), Br, etc.) as of RoHS3, and no REACH-restricted chemicals at declared concentrations. However, RoHS3 compliance does not guarantee environmental durability or end-of-life recyclability; the polyester insulation and thin gold plating reduce material recovery value. For EU procurement or products with an expected lifespan beyond 10 years, verify WEEE (Waste Electrical and Electronic Equipment) directive obligations. Maintaining original documentation of RoHS/REACH status is essential for supply chain traceability.