CT-4250NSP-SE1L-E 4.25Gb/s Multimode VCSEL SFP Fibre Transceiver
- Technology
- Fibre optic transceivers
- Partner
- Coretek
The CT-4250NSP-SE1L-E is a compact Small Form Factor Pluggable (SFP) optical transceiver designed for serial Fibre Channel links over multimode fibre.
Operating at a nominal wavelength of 850 nm, it supports data rates from 1.062 to 4.25 Gbps, making it suitable for multi-rate environments and evolving storage networks. The module is optimised for short-reach applications, offering link distances of up to 150 m on 50/125 µm fibre and 70 m on 62.5/125 µm fibre. A single +3.3 V supply powers the integrated 850 nm VCSEL transmitter and high-sensitivity receiver, simplifying power-rail design.
The device includes a duplex LC optical interface and an AC-coupled differential electrical interface, easing integration with standard host boards. Digital diagnostic monitoring via a two-wire serial interface (SFF-8472 compliant) provides real-time insight into operating parameters for improved reliability and predictive maintenance. The design targets harsh environments with an extended case operating temperature from –40 to +85 °C. Internally, a block diagram on page 3 shows separated optical and electrical sub-assemblies with integrated control, memory and safety features for robust operation.
Range features
A high level overview of what this range offers
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Multi-rate 1.062–4.25 Gbps operation – Supports a wide range of Fibre Channel link speeds with a single transceiver.
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850 nm multimode VCSEL design – Optimised for short-reach links over standard multimode fibre with low power use.
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Up to 150 m reach on 50/125 µm fibre – Enables flexible deployment in data halls, wiring closets and short inter-rack links.
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Extended –40 to +85 °C case temperature – Suitable for industrial, outdoor and unconditioned environments.
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Single +3.3 V supply with AC-coupled differential I/O – Simplifies host power and high-speed signal integrity design.
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Duplex LC optical interface – Compact, widely used connector for easy integration into existing fibre infrastructure.
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Digital diagnostics via two-wire interface – Provides real-time monitoring for easier maintenance and fault finding.
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Integrated TX Disable, TX Fault and LOS – Enhances system control and protection with clear status indication.
