The H3C SFP1G-ZX120-55 Compatible LINK-PP module is a high-performance Small Form-factor Pluggable transceiver designed for long-reach Gigabit Ethernet and Fibre Channel applications. Operating at a 1.25Gbps signaling rate, this single-mode module delivers optimal performance over extended optical links. It features a reliable 1550nm DFB transmitter and a highly sensitive PIN receiver, ensuring exceptional signal integrity and low power consumption across commercial operating environments.
H3C Part Number
SFP1G-ZX120-55
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1550nm
Max Cable Distance
120km
Connector
Duplex LC
Media
SMF
Transmitter Type
DFB
Receiver Type
PIN
TX Power
0 to +5dBm
RX Power
-30 to -1dBm
Receiver Sensitivity
-28dBm
DOM Support
Yes
Operating Temperature Range
0 to 70°C
Protocols
SFF-8472 MSA Compliant, IEEE 802.3ah-2004
Key Features of H3C SFP1G-ZX120-55 Compatible LINK-PP 1G SFP
This commercial-grade transceiver features hot-pluggable capability for seamless, zero-downtime installations and maintenance. Equipped with a high-performance 1550nm DFB laser and digital diagnostic monitoring, the module delivers an exceptional power budget, ultra-low electromagnetic interference, and stable long-distance connectivity across modern fiber networks.
The H3C SFP1G-ZX120-55 Compatible LINK-PP optical module provides a cost-effective and dependable hardware solution for enterprise networks. Built with high-quality optoelectronic components, this SFP transceiver satisfies the increasing demand for high-density, energy-efficient fiber optic communication infrastructure.
SFP1G-ZX120-55: 1.25G Connectivity for OTN Trunk Lines
Engineered for high-capacity backbone networks, this SFP module provides robust 1.25G throughput for optical transport network trunk lines. It maintains stable data transmission, reduces packet loss, and optimizes bandwidth efficiency across long-haul telecommunication systems.
SFP1G-ZX120-55 Module with 1550nm Wavelength
Utilizing the low-attenuation 1550nm optical wavelength window, this SFP module maximizes signal efficiency over single-mode fiber. The 1550nm DFB laser minimizes dispersion, ensuring clean signal propagation through extensive fiber optic network pathways.
Specially engineered for ultra-long-haul networking, this module supports an impressive transmission distance of up to 120 kilometers. It eliminates the need for expensive intermediate repeaters, significantly lowering overall network deployment and infrastructure costs.
SFP1G-ZX120-55 Module with Duplex LC Interface
Featuring a standard duplex LC connector, this transceiver ensures reliable physical alignment and low insertion loss. The compact LC interface supports high-density patch panel configurations, maximizing chassis space efficiency in data centers.
SFP1G-ZX120-55 Module with DOM for Real-Time Monitoring
Integrated Digital Optical Monitoring allows network administrators to track real-time operational parameters. This diagnostic feature tracks internal temperature, supply voltage, laser bias current, and optical power to ensure proactive network maintenance.
This optical transceiver is fully certified under rigorous international standards, confirming its safety, environmental friendliness, and manufacturing excellence for global networking deployments.
Every single transceiver undergoes a comprehensive automated quality testing program, validating parametric performance, structural integrity, and long-term functional stability before leaving our facility.
SFP1G-ZX120-55 Quality Certifications
The module strictly complies with CE, FCC, RoHS, and ISO9001 quality management standards, ensuring environmentally responsible manufacturing and dependable operational safety.
This product is in conformity with ISO9001. This system is valid to a company engaging in development, production and supply service of fiber optical products. Please contact us to learn more.
ISO/IEC 27001 is an international standard for managing and processing information security. This standard is jointly developed by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It sets out requirements for establishing, implementing, maintaining, and continually improving an information security management system (ISMS). Ensuring the confidentiality, integrity, and availability of organizational information assets, obtaining an ISO 27001 certificate means that the enterprise has passed the audit conducted by a certification body, proving that its information security management system has met the requirements of the international standard. Please contact us to learn more.
This product is in conformity with ISO14001.It is intended for use by an organization seeking to manage its environmental responsibilities in a systematic manner that contributes to the environmental pillar of sustainability. Please contact us to learn more.
ISO 45001 is a global standard that sets out the requirements for an occupational health and safety management system (OH&SMS).
REACH is a European Union regulation concerning the Registration, Evaluation, Authorization and Restriction of Chemicals. It came into force on 1st June 2007 and replaced a number of European Directives and Regulations with a single system. The regulation aims to protect human health and environmental safety, maintain and improve the competitiveness of the EU chemical industry, and develop innovative capabilities for non-toxic and harmless compounds to prevent market fragmentation, increase the transparency of the use of chemicals, promote non-animal experiments, and pursue sustainable social development.Please contact us to learn more.
This product meets the applicable requirements of Directive (EU) 2015/863 of RoHS. It restricts the use of 10 hazardous materials in the manufacture of various types of electronic and electrical equipment: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, and four different phthalates. Please contact us to learn more.
This product fully accords with the FCC, which aims to manage the radio wave and magnetic fields more reasonably. Please contact us to learn more.
CB is an international system operated by IECEE. This product is based on IEC standards for testing the safety performance of electrical products. Please contact us to learn more.
This product fully accords with UKCA (UK Conformity Assessed) certificate, which signifies that it meets all relevant quality standards as well as health and safety requirements. Please contact us to learn more.
UL certification is a non-mandatory certification in the United States,mainly testing and certification of product safety performance.Its ultimate purpose is to obtain products with a fairly safe level for the market,and to contribute to ensuring human health and property safety.Please contact us to learn more.
SFP1G-ZX120-55 Certified for Reliable Host-Device Compatibility
Comprehensive EEPROM coding and rigorous hardware verification guarantee seamless compatibility with major industry switch, router, and media converter platforms.
Rigorous Testing Ensures Reliable SFP Performance
Our comprehensive multi-stage testing procedure validates every technical specification, ensuring that each SFP module delivers exceptional field reliability and optimal network uptime.
Optical Spectrum Test
Advanced spectral analysis verifies central wavelength accuracy and side-mode suppression ratio standards.
Extensive bit error rate testing guarantees flawless data packet delivery and transmission integrity.
Temperature Test
Thermal chamber cycling validates reliable, stable performance across the full commercial temperature range.
Product Shipping for H3C SFP1G-ZX120-55 Compatible LINK-PP 1G SFP
Our optimized global shipping process ensures that your optical components arrive safely, securely, and completely on schedule, ready for immediate network deployment.
Anti-Static Protective Packaging
Each module is sealed inside customized ESD packaging to prevent electrostatic damage.
Shock-Resistant Transport Protection
Cushioned multi-slot trays safeguard the delicate optical interfaces against mechanical impact during transport.
Fast Order Processing and Dispatch
Our efficient warehousing system ensures rapid order validation, secure packaging, and immediate dispatch.
Global Logistics and International Delivery
Partnering with premium international couriers guarantees reliable, tracked doorstep delivery to global destinations.
This technical reference section provides clear step-by-step guidance on hardware installation, optical fiber connection, and software-based DDM parameter verification, ensuring smooth integration of the SFP transceiver into your active network switch architecture.
SFP1G-ZX120-55 Technical Support
LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.
Pre-Sales Technical Consultation
Professional technical guidance to help customers select the most suitable SFP1G-ZX120-55 modules based on network architecture and application requirements.
Compatibility Verification Support
Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.
Deployment & Installation Assistance
Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.
Long-Term Technical Assurance
Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.
A:
Yes, absolutely! For volume purchases like bulk deployments over 100 units, we provide special tiered pricing and dedicated B2B account support. Please hit up our live chat or email sales for a custom wholesale quote. By
admin on
2026-04-17
A:
Good catch! The LS-SM551G-A2C is commercial grade (0~70°C) suited for indoor server racks. For harsh outdoor environments, we highly recommend our industrial-grade equivalent which supports extreme temperatures from -40°C to 85°C. You can search for our "LS-SM551G-A2I" model on the site. By
admin on
2026-01-10
A:
Yes! It fully complies with IEEE 802.3ah-2004 and SFF-8472 protocols. The built-in DOM (Digital Optical Monitoring) feature ensures you can reliably poll real-time diagnostic data like TX/RX power and temperature directly via your network management system. By
admin on
2025-10-24
A:
This transceiver is specifically designed for Single-Mode Fiber (SMF) to achieve the 120km max distance. You will need a standard Duplex LC connector patch cable to link them up properly. By
admin on
2025-10-09
A:
Hi! This module is completely MSA compliant and uses standard EEPROM coding. It works seamlessly across multi-brand environments including Cisco, Aruba, and Ubiquiti without triggering any unsupported transceiver warnings. By
admin on
2025-07-02
Please write comments with more than three
character.
493810
317648
C***z
Switzerland
Verified
Purchase
5 .0
2026-02-20
As a DC tech, I need reliable dom support to monitor voltage and bias current. This MSA compliant transceiver integrated perfectly with our NMS, surviving heavy loads in our multi-brand switch topology.
Please write comments with more than three
character.
493810
317651
A***k
Denmark
Verified
Purchase
5 .0
2026-01-12
We deployed 50 of these duplex lc smf transceivers in an outdoor cabinet scenario. Despite nearing the 70°C limit during summer, the PIN receiver maintained zero errors on our base station backhaul.
Please write comments with more than three
character.
493810
317657
D***s
Netherlands
Verified
Purchase
5 .0
2025-03-21
Ran an OTDR and light meter on this 1.25g sfp 1550nm 120km module. TX power sits beautifully at +2dBm, hitting our remote site 80km away with pristine signal integrity. Elite tier hardware!
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