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Card Edge Connector
Industrial, IT Datacom
The CONSHARE M.2 H4.8 M-KEY Connector series provides PCIe Gen4 and Gen5 card-edge socket solutions in three gold-plating configurations. Built to the PCI-SIG M.2 specification with 0.5 mm pitch and 4.8 mm board-side height, each connector is engineered for high-speed differential pair routing, minimal insertion loss, and reliable mechanical retention across demanding deployment environments.
Every CONSHARE M.2 H4.8 socket undergoes controlled-impedance validation. Contact geometry is tuned for differential pair symmetry, targeting near-identical intra-pair skew—critical for maintaining the 32 GT/s eye-diagram margin. The Gen5 variant (CUF014G67M113) features an optimized contact spring profile and dielectric channel that compensates for sharper rise/fall times at 32 GT/s signaling, distinguishing it from Gen4 sockets that lack this high-frequency optimization.
Au1u'' (CUF013G67M108) — Thin gold flash for high-volume consumer electronics where the connector is mated once at factory assembly. Cost-competitive without sacrificing initial contact reliability.
Au30u'' (CUF013G67M113 / CUF014G67M113) — Thick gold deposit for repeated mating cycles, corrosive or humid environments, and 5–10 year service life stability.
The Au30u'' variants are validated for 60+ insertion/extraction cycles with contact resistance remaining below 30 mΩ throughout.
Parameter | CUF013G67M108 | CUF013G67M113 | CUF014G67M113 |
|---|---|---|---|
PCIe Generation | Gen4 (16 GT/s/lane) | Gen4 (16 GT/s/lane) | Gen5 (32 GT/s/lane) |
Gold Plating | Au1u'' (≈0.025 µm) | Au30u'' (≈0.76 µm) | Au30u'' (≈0.76 µm) |
Key Type / Height | M-Key / 4.8 mm | M-Key / 4.8 mm | M-Key / 4.8 mm |
Contact Pitch / Pins | 0.5 mm / 59-pin | 0.5 mm / 59-pin | 0.5 mm / 59-pin |
Mounting | SMT | SMT | SMT |
Contact Resistance | ≤ 40 mΩ | ≤ 30 mΩ | ≤ 30 mΩ |
Insulation Resistance | ≥ 1000 MΩ | ≥ 1000 MΩ | ≥ 1000 MΩ |
Operating Temperature | −40 °C to +85 °C | −40 °C to +85 °C | −40 °C to +85 °C |
Mating Cycles (rated) | 30 min. | 60 min. | 60 min. |
Insertion / Extraction Force | 50 N max / 5 N min | 50 N max / 5 N min | 50 N max / 5 N min |
Soldering | Pb-free reflow, J-STD-020 | Pb-free reflow, J-STD-020 | Pb-free reflow, J-STD-020 |
Packaging | T&R, 500 pcs | T&R, 500 pcs | T&R, 500 pcs |
Choose the correct SKU based on three axes: signaling speed, environmental exposure, and serviceability model.
Gen4 designs (≤16 GT/s) can use either Gen4 connector. Gen5 NVMe SSDs at 32 GT/s require CUF014G67M113—a Gen4 socket may physically mate but will introduce insertion-loss margin erosion causing intermittent link-training failures.
Scenario | Recommended SKU | Why |
|---|---|---|
Sealed consumer device (single mating) | CUF013G67M108 | Au1u'' sufficient; most cost-effective |
Serviceable prosumer product | CUF013G67M113 | Au30u'' survives repeated insertion |
Industrial / edge server (field serviceable) | CUF013G67M113 or CUF014G67M113 | Thick gold withstands humidity & thermal cycling |
Automotive telematics (Gen5 storage) | CUF014G67M113 | Gen5 channel + Au30u'' for harsh environment |
R&D test fixture (high cycle count) | CUF013G67M113 or CUF014G67M113 | Mating durability is dominant factor |
In corrosive atmospheres (sulfur compounds, salt spray, high humidity), Au30u'' provides a diffusion barrier that delays creeping corrosion by an order of magnitude versus Au1u''.
NVMe SSDs: M-Key supports PCIe x4—Gen4 delivers up to 7.4 GB/s reads; Gen5 up to 14.8 GB/s for AI caching and data-center accelerators.
Wireless Modules: Wi-Fi 6E/7 M.2 cards benefit from Gen4-rated forward compatibility for next-gen chipsets.
5G / IoT Edge: Cellular modem cards in industrial gateways favor Au30u'' for uncontrolled-environment reliability.
Automotive Storage: ADAS logging and infotainment require the Gen5 Au30u'' combination of high-frequency integrity and material endurance.
XRF material verification — alloy composition & gold thickness confirmed before stamping
CMM dimensional inspection — contact beam width, solder tail coplanarity (≤0.10 mm)
100% electrical testing — continuity & isolation on every unit
Solderability test — J-STD-003 wetting balance per reel lot
AOI visual inspection — 100% units checked for plating defects
Order Type | Lead Time |
|---|---|
Stock parts (buffer inventory) | 3–5 days (48-hour express available) |
Standard run (≤50K pcs) | 2–3 weeks |
Large-scale (50K–500K pcs) | 4–6 weeks |
Custom specification | 5–7 weeks (incl. tooling) |
Intermediate gold tiers (Au3u'', Au5u'', Au15u'')
Selective gold plating (contact-only, 40–60% cost savings)
Tube packaging / custom reel quantities
Modified solder tail geometry
Private-label marking for OEM BOMs
Gen5 PCB Layout: Route differential pairs with ≤5 mil intra-pair skew; maintain unbroken ground plane beneath footprint; place AC-coupling caps near host controller, not at connector; always use M.2 mounting screw for card retention.
Reflow Profile: Peak 260 °C (245+ for ≥5 s), 60–90 s above liquidus, max 3 passes. High-temp LCP body tolerates standard Pb-free profiles without warp.
Physically yes, but not recommended for production. The Gen5 connector's refined contact spring and dielectric channel are optimized for 32 GT/s—using a Gen4 socket risks narrowing your SI margin and causing intermittent link-training failures.
Au1u'' is a flash coat preventing nickel oxidation before first mating; it wears through after ~10–15 cycles. Au30u'' survives 60+ cycles and provides genuine corrosion resistance in humid/corrosive environments. For any serviceable or harsh-environment product, Au30u'' is the correct choice.
All standard M-Key card-edge modules: 2230, 2242, 2260, 2280, 22110. The connector is identical across sizes—card length is accommodated by PCB layout and screw position.
Yes—S-parameter models (.s4p files) for Ansys HFSS / Keysight ADS are available for both Gen4 and Gen5 variants. Contact our engineering team to request.
Part Number | Description | Packaging | MOQ |
|---|---|---|---|
CUF013G67M108 | Gen4, Au1u'' | T&R, 500 pcs/reel | 1 reel |
CUF013G67M113 | Gen4, Au30u'' | T&R, 500 pcs/reel | 1 reel |
CUF014G67M113 | Gen5, Au30u'' | T&R, 500 pcs/reel | 1 reel |
Free samples (5 pcs/SKU) available for qualified customers. Volume discounts at 10K/50K/100K breakpoints; custom quotes within 24 hours.
CONSHARE engineers precision interconnect solutions built on direct collaboration with SSD controller designers, motherboard OEMs, and industrial system integrators. A connector is never just a connector—it's where your signal-integrity budget is won or lost, where field reliability is determined by microns of gold, and where manufacturing discipline directly affects warranty return rates. That belief drives our material selection, process control, and engagement at the schematic level—not just the order level.
Contact CONSHARE today to request samples or discuss your PCIe channel design.
Specifications subject to change. Verify critical parameters in your application context.
