Brief Introduction
The CPAK-100G-SR4 is a high-density 100 Gigabit optical transceiver developed by Cisco for next-generation data centers, delivering 100Gbps short-reach connectivity over multimode fiber with optimized power efficiency and thermal performance.
Detailed Description
This Cisco-proprietary CPAK module leverages parallel 4x25G NRZ technology to achieve 100G Ethernet transmission across 100m (OM4) and 70m (OM3) multimode fiber. Featuring an innovative compact design with integrated digital diagnostics (DDM), it consumes ≤3.5W while supporting IEEE 802.3bm standards for seamless integration with Cisco Nexus 9000 switches, CRS routers, and ASR platforms. Ideal for high-bandwidth applications like cloud storage and video streaming.
Key Features
Cisco CPAK Form Factor: 45% smaller than CFP2 modules for higher port density
MPO-12 Connector: Parallel optics for 100G-SR4 transmission
Low Power Design: ≤3.5W typical consumption with advanced thermal management
Real-Time Monitoring: Digital diagnostics for temperature/RSSI/power tracking
Hot-Swappable: Tool-free installation in compatible Cisco chassis
Multi-Protocol Support: 100GBASE-SR4, OTU4, and InfiniBand EDR
Product Parameters Table
| Parameter | Specification |
| Model | CPAK-100G-SR4 |
| Data Rate | 100 Gbps (4x25G) |
| Wavelength | 850nm VCSEL |
| Fiber Type | Multimode OM3/OM4 |
| Max Distance | 70m (OM3), 100m (OM4) |
| Connector | MPO-12 (APC) |
| Power Consumption | ≤3.5W |
| Operating Temperature | 0°C to 70°C |
Similar Models Comparison Table
| Model | Form Factor | Distance (OM4) | Power | Key Compatibility |
| CPAK-100G-SR4 | Cisco CPAK | 100m | ≤3.5W | Cisco Nexus/ASR series |
| QSFP-100G-SR4-S | QSFP28 | 100m | ≤3.5W | Multi-vendor switches |
| CFP2-100G-SR4 | CFP2 | 100m | ≤6W | Legacy Cisco/HPE systems |
| CFP4-100G-SR10 | CFP4 | 150m | ≤4W | Long-reach MMF upgrades |
