CPAK-100G-SR4 Genuine Cisco CPAK-100G-SR4 100GBASE-SR4 CPAK for MMF

Cisco CPAK-100G-SR4 - Overview

The SR4 variant of the CPAK family is optimized for short-reach, high-density data center interconnects. Unlike the SR10 model (which uses 10 lanes), the SR4 uses 4 parallel lanes for a more efficient fiber footprint.

🔧 Key Specifications

• Form Factor: Cisco CPAK (compact, lower power than CFP/CFP2)
• Standard: 100GBASE-SR4 (IEEE 802.3bm compliant)
• Wavelength: 850 nm (multimode optics)
• Reach:
  • Up to 100 m over OM3 MMF
  • Up to 150 m over OM4 MMF
• Interface: MPO-12 optical connector (8 fibers active: 4 transmit, 4 receive)
• Data Rate: 100 Gbps (4x 25 Gbps parallel lanes)
• Power Consumption: ~3.5 W (significantly lower than CFP SR optics)
• Applications:
  • High-density data center interconnects
  • Switch-to-switch or router-to-switch short-range uplinks
  • Enterprise backbones where short-haul 100G links are needed

🧩 Ideal Use Cases

• Data centers requiring short-range 100G connectivity between aggregation and core switches
• High-performance computing environments with parallel fiber cabling
• Enterprise networks upgrading to 100G in campus or backbone layers