FT21AC01301 SFP 2x1 Cage Connector With Outer LightPipe

F-tone FT21AC01301 2x1 SFP Cage Connector with Outer LightPipe

Engineered to maximize front-panel I/O density in modern networking equipment, the FT21AC01301 is a highly integrated 2x1 (stacked) SFP receptacle and cage assembly. By stacking two Small Form-factor Pluggable (SFP) ports vertically within a single 14.00mm wide footprint, this connector allows data center architects and hardware designers to effectively double the port capacity of a standard 1U or 2U chassis compared to traditional belly-to-belly or single-row layouts.

Constructed from a premium Copper Alloy with 30u" plating, this robust cage assembly ensures superior structural integrity and long-term resistance to oxidation. With a rugged industrial operating temperature range of -40°C to +85°C, the FT21AC01301 delivers mission-critical reliability for both climate-controlled enterprise environments and unconditioned outdoor edge computing enclosures.

Integrated Outer LightPipes for Visual Diagnostics

In high-density stacked configurations, providing clear port-level diagnostic feedback is a mechanical challenge. The FT21AC01301 solves this by incorporating precision-engineered Outer LightPipes. These optical channels efficiently route light from surface-mounted LEDs located on the PCB behind the cage directly to the front bezel. This provides network administrators with immediate, unambiguous visual status indicators (such as Link/Activity) for both the upper and lower ports, without compromising the cage’s electromagnetic shielding or structural rigidity.

Advanced EMI Containment & Shielding

High-frequency optical and copper transceivers generate significant localized noise. Managing this Electromagnetic Interference (EMI) at the chassis faceplate is a critical design mandate.

• Fully Shielded Enclosure: The copper alloy cage acts as a continuous Faraday shield, aggressively containing internal high-frequency emissions while blocking external Radio Frequency Interference (RFI).
• Chassis Grounding Integration: Designed to mate seamlessly with metallic chassis bezels, ensuring a continuous, low-impedance electrical path to ground, essential for passing strict FCC, CE, and CISPR regulatory testing.
• Port-to-Port Isolation: Internal metallic dividers between the upper and lower ports dramatically reduce near-end crosstalk (NEXT) and electromagnetic coupling between adjacent SFP transceiver modules.

Mechanical Design & Press-Fit PCB Integration

The FT21AC01301 is tailored for high-yield, high-reliability manufacturing, eliminating the thermal stress associated with secondary soldering operations for the cage structure.

• Press-Fit (Compliant Pin) Technology: The cage utilizes press-fit pins that are driven directly into plated through-holes (PTH) on the PCB. This creates a cold-welded, gas-tight mechanical bond that is highly resistant to vibration, physical shock, and thermal cycling.
• Receptacle Integration: Unlike single-port cages where the SFP connector is soldered separately beneath the cage, this stacked 2x1 configuration integrates the right-angle through-hole receptacle directly into the assembly, ensuring perfect alignment for pluggable modules.
• Optimized PCB Compatibility: Specifically designed for heavier telecom-grade boards, requiring a recommended PCB thickness of 2.36mm (0.093 inches) to ensure proper press-fit engagement and mechanical stability.

Typical Applications

By combining stacked port density, robust thermal resilience, and integrated visual diagnostics, the FT21AC01301 is the optimal interconnect solution for high-throughput network architectures:

• Data Center & Enterprise Switching: High-density Top-of-Rack (ToR) switches, core routers, and aggregation platforms requiring maximum front-panel I/O.
• Telecommunications Infrastructure: Broadband access equipment, 5G baseband units (BBUs), and fiber-to-the-x (FTTX) optical line terminals (OLTs).
• Industrial & Edge Computing: Ruggedized industrial Ethernet switches and micro-data center nodes deployed in extreme temperature environments (-40°C to +85°C).
• Network Security: Next-generation firewalls, intrusion detection systems (IDS), and unified threat management (UTM) hardware.