10-3388-03 Cisco LC Multi-Mode 25 GBPS Transceiver.

Cisco 10-3388-03 LC SFP28 25GBPS Transceiver

The Cisco 10-3388-03 is a high-performance SFP28 (Small Form-Factor Pluggable 28) optical transceiver module designed for 25 Gigabit Ethernet applications. This hot-swappable transceiver operates over multi-mode fiber (MMF) using LC connectors and supports data rates of 25.78125 Gbps, making it ideal for high-speed network connectivity in data centers, enterprise networks, and storage area networks.

Form Factor

This transceiver follows the SFP28 MSA (Multi-Source Agreement) specifications with compact dimensions of approximately 13.4mm x 56.5mm x 8.5mm. The module features a durable metal housing that provides electromagnetic interference (EMI) protection and effective heat dissipation. The integrated LC duplex connector interface ensures secure fiber optic connections while maintaining the small form factor essential for high-density network deployments.

Interface and Power Specifications

The Cisco 10-3388-03 utilizes a 20-pin edge-type electrical connector that interfaces with the host system. It operates on a single 3.3V power supply with typical power consumption of less than 1.0 watt. The module incorporates advanced power management features including low-power mode capabilities and comprehensive digital diagnostics monitoring through the I2C interface.

High Performance Specifications

Optical Characteristics and Performance Metrics

This multi-mode transceiver supports a wavelength of 850nm and is designed for use with OM3 and OM4 multi-mode fiber cables. The typical maximum link length reaches 100 meters over OM4 fiber and 70 meters over OM3 fiber. The transmitter section employs a VCSEL (Vertical Cavity Surface Emitting Laser) light source, while the receiver uses a PIN photodiode. The module maintains an optical power budget sufficient for reliable data transmission across specified distances with bit error rates better than 10^-12.

Environmental Operating Conditions

The Cisco 10-3388-03 operates within a temperature range of 0°C to 70°C (32°F to 158°F) with a relative humidity of 5% to 85% non-condensing. The module is designed to withstand storage temperatures from -40°C to 85°C. It meets industry standards for shock and vibration resistance, ensuring reliable performance in various environmental conditions encountered in data center and enterprise environments.

Compatibility and Supported Applications

Switch Compatibility Matrix

The Cisco 10-3388-03 SFP28 transceiver is compatible with a wide range of Cisco switching platforms including the Nexus 9000 series (93180YC-FX, 9332C, 9336C-FX2, 9364C), Nexus 3000 series (3232C, 3264Q), and MDS 9700 series directors. It also supports Cisco UCS 6300 and 6400 series Fabric Interconnects. The transceiver is specifically designed to work with Cisco equipment that supports SFP28 interfaces and requires no additional configuration for basic functionality.

Application Scenarios and Use Cases

Data Center Interconnect Solutions

The 25G SFP28 technology serves as an optimal solution for spine-leaf architecture connections in modern data centers. The Cisco 10-3388-03 enables cost-effective 25G server access connections while providing migration paths from 10G infrastructures. It supports efficient connectivity for hyper-converged infrastructure deployments and is particularly valuable for top-of-rack switching applications where bandwidth density and power efficiency are critical considerations.

Storage Area Network Applications

In storage environments, this transceiver facilitates high-speed connections for storage arrays and SAN switching infrastructure. It supports protocols including Fibre Channel over Ethernet (FCoE) and iSCSI, making it suitable for unified fabric deployments. The 25Gbps bandwidth provides adequate headroom for demanding storage workloads while maintaining compatibility with existing multi-mode fiber cabling plants.

Performance Features and Advanced Capabilities

Advanced Equalization Technology

The Cisco 10-3388-03 incorporates sophisticated signal conditioning features including transmitter pre-emphasis and receiver equalization. These technologies compensate for signal degradation caused by PCB traces, connectors, and cables, ensuring clean signal transmission at 25Gbps data rates. The module maintains excellent signal integrity metrics including low jitter generation and high jitter tolerance, critical for maintaining link stability in demanding network environments.

Error Prevention and Correction Mechanisms

This transceiver implements advanced forward error correction (FEC) capabilities compatible with IEEE 802.3by Clause 91 Reed-Solomon FEC (RS-FEC). The FEC functionality enables reliable operation over longer distances and in challenging signal integrity conditions by detecting and correcting bit errors in real-time. The module supports both FEC and non-FEC operation modes, automatically negotiating with the link partner for optimal error handling.

Fiber Optic Connection

When connecting fiber optic cables, always inspect connectors for contamination using a fiber microscope. Clean connectors if necessary before mating. Ensure the LC connectors are properly aligned and push firmly until they click into position. Avoid bending fiber cables beyond their minimum bend radius (typically 30mm for unjacketed fiber). Use high-quality OM3 or OM4 multi-mode fiber cables with proper polishing (UPC) to minimize insertion loss and back reflection.

Industry Standards and Regulatory Compliance

IEEE and MSA Compliance

The Cisco 10-3388-03 complies with IEEE 802.3by standards for 25GBASE-SR Ethernet. It adheres to SFP28 MSA (SFF-8432 and SFF-8431) specifications for mechanical dimensions, electrical interface, and management interface. The module implements digital diagnostics monitoring as defined in SFF-8472 revision 11.0 and supports necessary management data structures including the required memory map organization for pluggable transceivers.

Optical Interface Standards

This transceiver meets optical specifications per IEEE 802.3by 25GBASE-SR requirements including transmitter and receiver eye safety specifications compliant with IEC 60825-1 and FDA 21 CFR 1040.10. The optical characteristics align with TIA-492AAAC OM3 and TIA-492AAAD OM4 fiber specifications. The product undergoes rigorous testing to ensure compliance with relevant Telcordia GR-468-CORE requirements for reliability and performance under operating conditions.

Laser Safety Classification

This transceiver is classified as a Class 1 Laser Product according to IEC 60825-1:2014, meaning it is safe under all conditions of normal use. The module incorporates automatic laser shutdown functionality that deactivates the transmitter when no signal is detected or when the fiber link is disconnected. Safety features include fault condition monitoring and proper labeling in accordance with international laser product safety regulations.

Comparison with Similar Transceiver Technologies

SFP28 vs. SFP+ Technical Distinctions

While sharing the same physical form factor, SFP28 modules like the Cisco 10-3388-03 support data rates up to 28Gbps compared to SFP+'s 10Gbps maximum. The electrical interface in SFP28 provides improved signal integrity through enhanced specifications for insertion loss, return loss, and crosstalk. SFP28 maintains backward compatibility with SFP+ slots in many platforms, though at reduced speeds. The 10-3388-03 delivers 2.5x the bandwidth of SFP+ SR modules while maintaining similar power consumption and thermal characteristics.

Multi-mode vs. Single-mode Application Scenarios

The multi-mode design of the 10-3388-03 distinguishes it from single-mode SFP28 variants optimized for long-distance transmission. Multi-mode transceivers use less expensive VCSEL lasers and are designed for shorter reach applications typically within data centers or campus environments. Compared to single-mode alternatives, multi-mode solutions offer significantly lower cost per port while providing adequate performance for most intra-facility connections up to 100 meters.

Enhanced Reliability

As a genuine Cisco transceiver, the 10-3388-03 undergoes extensive qualification testing beyond standard compliance requirements. This includes rigorous thermal cycling, mechanical stress testing, and compatibility validation across the Cisco product ecosystem. Cisco provides full technical support and warranty coverage for genuine transceivers, ensuring reliable operation in production environments. The module features Cisco-specific firmware that enables advanced management capabilities and seamless integration with Cisco networking operating systems.