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Card Edge Connector
Industrial, IT Datacom
Every new PCIe generation doubles the data rate, and by the time you reach Gen 5, the margin for signal degradation shrinks to almost nothing. The connectors on this page are engineered specifically for that reality — surface-mount parts that hold tight electrical and mechanical tolerances so your add-in card or baseboard design doesn't become the bottleneck in a 32 GT/s lane.
CONSHARE manufactures three configurations here, all sharing the same black SMT housing and Gen 5.0 contact geometry but differing in lane count and gold plating thickness. The table below maps the part numbers so you can cross-reference quickly.
Part Number | Lane Config | Pin Count | Gold Plating | Typical Use |
|---|---|---|---|---|
CUP0983B15140 | 8X | 98 | 30μ" (0.76μ) | Mid-range GPUs, NVMe expansion, HBA cards |
CUP1643B15140 | 16X | 164 | 30μ" (0.76μ) | Full-bandwidth GPUs, compute accelerators |
CUP1647B15140 | 16X | 164 | 15μ" (0.38μ) | Cost-optimized 16X builds with lower cycle counts |
The choice between 8X and 16X comes down to how many lanes your target device actually uses. An 8X connector (CUP0983B15140) carries 98 contacts and is sufficient for most NVMe expansion cards and mid-tier GPUs — PCIe 5.0 at 8X still delivers 256 GB/s aggregate bandwidth, which is more than most current devices can consume. The 16X parts (CUP1643B15140 and CUP1647B15140) give you the full 164-pin layout for devices that saturate all lanes, such as high-end accelerators or capture cards.
The harder decision is the gold plating. Here's the practical difference:
30μ" gold (Au30u") — the thicker plating on CUP0983B15140 and CUP1643B15140. This is the right call when the connector will see repeated mating cycles during product testing, prototyping, or field-serviced systems. Thicker gold resists the fretting wear that degrades contact resistance over time, so your signal path stays clean through 50+ insertion cycles without the contact surface oxidizing or thinning.
15μ" gold (Au15u") — the thinner plating on CUP1647B15140. This is engineered for high-volume production runs where the connector is mated once during assembly and rarely touched again. You get the same Gen 5.0 signal performance on day one, at a lower per-unit cost. For consumer motherboards or single-use appliance boards, this is usually the smarter economic choice without sacrificing initial signal integrity.
At 32 GT/s per lane, the connector is no longer just a mechanical bridge — it becomes part of your channel budget. A single mated pair introduces impedance discontinuities, crosstalk, and insertion loss that your PHY equalization has to compensate for. CONSHARE's Gen 5.0 contact design targets a controlled differential impedance that matches the PCIe CEM specification, so your channel simulation models stay accurate rather than requiring extra guard bands.
A few design parameters worth noting if you're doing layout work around these parts:
PCB stack-up: these connectors are validated on 1.57mm ±0.13mm board thickness. If your design uses a significantly different stack-up, factor in the mechanical fit between the SMT pads and the card edge finger region.
Reflow profile: the housing is rated for 260°C peak with a 3–5 second dwell. Standard SAC305 paste with a 0.15mm stencil thickness will produce reliable solder joints without special modifications to your existing PCIe connector reflow recipe.
Operating envelope: -40°C to 105°C covers both enterprise server room conditions and industrial embedded deployments. If your application pushes toward the thermal limits (e.g., 1U servers with restricted airflow), the 105°C rating gives you headroom that older Gen 3/4 connectors rated to 85°C simply don't.
The 16X 30μ" variant (CUP1643B15140) is the go-to for GPU-accelerated compute nodes where a card may be reseated during maintenance windows. The thicker gold ensures that the fifth or sixth reseating doesn't introduce intermittent signal errors that are nearly impossible to diagnose in a rack.
The 15μ" 16X variant (CUP1647B15140) hits the cost/performance sweet spot for boards that ship in volume and are mated once at the factory. You get full Gen 5.0 bandwidth for the end user without paying for plating thickness the use case doesn't need.
The 8X 98-pin part (CUP0983B15140) fits naturally into compact carrier boards for PCIe-based FPGA accelerators, video processing modules, or custom I/O expansion. The 8X lane count keeps the footprint smaller (56mm body width vs. 89mm for 16X), which matters when board real estate is tight.
Every batch of these connectors goes through CONSHARE's in-house electrical testing — contact resistance, insulation resistance, and dielectric withstand are verified per lot, not sampled sporadically. The production line holds tight tolerances on coplanarity of the SMT tails, because warpage beyond spec is the single most common cause of open solder joints on high-pin-count PCIe connectors during reflow.
Lead time: standard configurations (all three part numbers listed above) are stocked for quick-turn orders. Typical delivery for volume orders runs shorter than industry average because CONSHARE controls the full production chain from stamping to plating to injection molding under one roof — no subcontractor bottlenecks.
Customization options if your project needs something beyond the standard catalog:
Adjusted gold plating thickness for specific cycle-count targets
Tape & reel orientation reversed for pick-and-place convenience
Custom labeling or barcoding on reels for traceability in your MES
Engineering support for channel simulation models and pad pattern recommendations
Yes — they are mechanically and electrically backward compatible. The Gen 5.0 contact geometry meets or exceeds Gen 4 CEM requirements, so you can standardize on these parts across multiple product generations and phase out older inventory.
On the first mating, there is no measurable signal-level difference. Gold thickness affects long-term contact reliability under mechanical wear, not the electrical characteristics of a fresh mated pair. Choose based on your expected cycle count, not your bandwidth target.
The connectors are validated to 50 cycles at the specified insertion/extraction force limits. With 30μ" gold, you'll typically see stable contact resistance well beyond that threshold. With 15μ" gold, performance is reliable within the rated cycle range but degrades faster if exceeded.
Yes. All three part numbers carry RoHS and HF (halogen-free) compliance certification.
Tape & reel on PI film, with leader and trailer tape for automated pick-and-place. Reel quantities: 720 pieces per full box for the 8X variant, 510 pieces for the 16X variants. Reel dimensions follow EIA-481 standard so no feeder adjustments are needed on standard SMT lines.
