The 0231A4-1550 is a 1G SFP CWDM optical module operating at 1550nm. It integrates a DFB laser and a PIN photodiode, supports data rates up to 1.25Gbps, and enables transmission over up to 40km on standard single-mode fiber. The module includes real-time digital optical monitoring and is specified for a standard operating temperature range of 0 to +70°C.
HW Part Number
0231A4-1550
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1550nm
Max Cable Distance
40km
Connector
Duplex LC
Media
SMF
Transmitter Type
DFB
Receiver Type
PIN
TX Power
-5 to 0dBm
RX Power
-26 to -1dBm
Receiver Sensitivity
-24dBm
Receiver Overload
-1dBm
EMC (Electromagnetic Compatibility)
Supported
DOM Support
Yes
Operating Temperature Range
0 to 70°C
Protocols
SFP MSA、SFF-8472
Key Features of HW 0231A4-1550 Compatible LINK-PP 1.25G SFP
Operating at 1550nm with a 40km reach over single-mode fiber, the HW 0231A4-1550 Compatible LINK-PP module is offered as a 1G SFP CWDM module. A duplex LC connector, DOM compliant with SFF-8472, and a hot-pluggable MSA-compliant SFP footprint are included in its design. With an operational temperature range of 0 to +70 °C, the module is well suited for commercial-grade networking deployments.
Featuring a hot-pluggable SFP footprint, the module allows easy installation and replacement without system power-down. It is fully compliant with the SFP Multi-Source Agreement, ensuring compatibility with standard host ports and cages.
0231A4-1550: 1 Gbps Connectivity for Metro and Regional Access
Providing a line rate of 1Gbps, this module is well suited for metro and regional access networks. It delivers cost-effective connectivity for medium-range links in city-wide or area-wide infrastructures.
0231A4-1550 Module with CWDM Technology for Fiber Efficiency
The CWDM technology integrated in the module enables multiple optical channels to coexist on one fiber, maximizing fiber utilization. It reduces the need for additional fiber strands, which is beneficial for network expansion and capacity upgrades.
0231A4-1550 Module with 1550nm Wavelength
Operating at the 1550nm wavelength, this transceiver leverages the lowest attenuation window of single-mode fiber. The 1550nm channel is a standard CWDM grid point, providing stable and predictable optical performance.
0231A4-1550 Module Supporting 40km Transmission
Supporting distances of up to 40km, the transceiver is designed for extended-reach applications over single-mode fiber. It provides adequate optical power budget to maintain signal integrity over long spans without regeneration.
0231A4-1550 Module with Duplex LC Interface
Equipped with a duplex LC interface, this SFP module ensures secure and polarized fiber connections. The LC connector is widely adopted in networking equipment, offering low insertion loss and easy mating.
0231A4-1550 Module with DOM for Real-Time Monitoring
With built-in DOM functionality, the module offers real-time monitoring of parameters such as Tx/Rx power, bias current, and temperature. It is compatible with SFF-8472 digital diagnostics, allowing network administrators to proactively detect link degradation.
The HW 0231A4-1550 Compatible LINK-PP 1G SFP optical transceiver complies with global manufacturing and safety standards. It maintains certified compliance under ISO 9001, CE, RoHS, and FCC frameworks.
Each module undergoes optical output and signal integrity verification before distribution. Hardware inspections confirm stable optical transmission and link continuity across standard temperature ranges.
0231A4-1550 Quality Certifications
Documented compliance verifies adherence to international environmental safety guidelines. These official approvals confirm that factory production aligns with standardized quality management controls.
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.
0231A4-1550 Certified for Reliable Host-Device Compatibility
The module completes full hardware recognition checks across various network platforms. Physical-layer validation ensures seamless plug-and-play operation with host equipment.
Rigorous Testing Ensures Reliable SFP Performance
Comprehensive testing procedures verify signal accuracy and continuous optical output across actual networks. Explore our full validation methodology at the LINK-PP Test Support Center.
Optical Spectrum Test
Analyze center wavelength precision to avoid channel interference across fiber links.
Eye Pattern Test
Inspect signal rise and fall times to guarantee clean transmission waveforms.
Bit Error Rate Test
Check packet transfer accuracy to eliminate data loss during heavy traffic.
Temperature Test
Validate hardware thermal limits to ensure dependable operation in tough environments.
Product Shipping for HW 0231A4-1550 Compatible LINK-PP 1.25G SFP
Safe transit methods protect your modules throughout the entire fulfillment process. Dependable carrier options ensure your shipment arrives securely and on schedule.
Anti-Static Protective Packaging
Protect sensitive optical circuits from electrostatic discharge damage.
Shock-Resistant Transport Protection
Safeguard optical modules against harsh drops and physical vibrations.
Fast Order Processing and Dispatch
Fulfill pending customer orders rapidly to ensure short fulfillment lead times.
Global Logistics and International Delivery
Ship transceiver orders globally through trusted international express carriers.
Align the 0231A4-1550 CWDM SFP module with the optical slot and slide it in until firmly seated. Connect LC fiber cabling to activate the 1550nm channel. Designed for easy deployment, this module connects switches and routers across extended metro links and regional access networks.
0231A4-1550 Technical Support
LINK-PP offers end-to-end technical support, from pre-sales consultation to post-deployment assistance, ensuring smooth integration and reliable network performance.
Pre-Sales Technical Consultation
Professional guidance to help you select the optimal 0231A4-1550 module for your network design and application needs.
Compatibility Verification Support
Validated compatibility with LINK-PP switches and other mainstream networking platforms for seamless deployment.
Deployment & Installation Assistance
Comprehensive step-by-step guidance for installation, configuration, and initial setup, ensuring accurate deployment and reliable, stable operation from the start.
Long-Term Technical Assurance
Ongoing technical support throughout the product lifecycle, delivering long-term stability for enterprise and carrier-grade networks.
A:
Yes, the LS-CW551G-40C module features a standard hot-pluggable SFP footprint, so you can insert or remove it while the switch is powered on without interrupting other active ports. By
admin on
2026-04-14
A:
In most standard deployments, yes. The module's 1550nm DFB laser and PIN receiver provide an optical power budget designed for up to 40km over standard single-mode fiber. However, because real-world links include patch panels, fiber splices, and potential MUX/DEMUX insertion loss, we always recommend calculating your total end-to-end dB loss to ensure adequate safety margin. By
admin on
2026-02-21
A:
Yes. Its high-stability DFB laser is engineered to stay well within the typical 1550nm CWDM passband tolerance across the entire operating temperature range, ensuring minimal insertion loss and clean channel isolation across your passive multiplexer filters. By
admin on
2025-08-27
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character.
492338
453607
Q***t
India
Verified
Purchase
5 .0
2026-03-30
Used a pair of these 1550nm CWDM SFP transceivers to link our base station aggregation switch back to the local fiber POP. Solid 1.25Gbps line rate with low latency over single-mode fiber.
Please write comments with more than three
character.
492338
453613
P***l
New Zealand
Verified
Purchase
5 .0
2026-03-09
We manage an independent regional ISP ring and needed reliable CWDM optics to provision new commercial gigabit circuits over our dark fiber assets. These 1G 1550nm SFP modules integrated seamlessly with our existing passive mux/demux grid. The bail clasp makes hot-swapping in tight 1RU line cards effortless, and the internal EEPROM table correctly populates SFF-8472 diagnostic data into our network orchestration system. Outstanding price-to-performance ratio for scaled deployments.
Please write comments with more than three
character.
492338
453621
J***g
Norway
Verified
Purchase
5 .0
2026-02-27
Running these in a base station backhaul setup over single-mode fiber. Link has been rock solid for two months now, DDM shows clean TX/RX power. The 0-70°C commercial temp range is fine for our indoor racks.
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character.
492338
453610
H***t
Russian Federation
Verified
Purchase
5 .0
2026-01-04
Bought a few to test before a bigger order. These 1G CWDM modules linked up in seconds on our switch, and the SFF-8472 DOM info is clean. Definitely ordering more for the full deployment.
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492338
453619
N***n
Netherlands
Verified
Purchase
5 .0
2025-12-21
We upgraded our city CCTV aggregation network using these 40km CWDM modules over single-mode fiber. Clear signal, easy duplex LC connection, and reliable day-and-night link stability.
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character.
492338
453616
M***m
Poland
Verified
Purchase
4 .0
2025-12-08
Great 1G SFP, DDM reads perfect, no complaints about the hardware at all. Only reason it's not five stars is the delivery took a few days longer than the estimated window. Worth the wait, but plan ahead if you're on a deadline.
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492338
453623
S***n
Australia
Verified
Purchase
5 .0
2025-11-19
Full digital optical monitoring support is a must for our NOC team. Real-time temperature, Tx bias, and optical Rx power are reading perfectly through our monitoring dashboard with zero MIB mapping headaches.
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492338
453612
O***r
Republic of Korea
Verified
Purchase
5 .0
2025-09-09
Operating within our climate-controlled data center at around 44°C. The standard commercial temperature range handles continuous 1G traffic loads with no packet loss or CRC error spikes.
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492338
453609
F***n
Thailand
Verified
Purchase
5 .0
2025-08-04
We deployed a pair of LS-CW551G-40C modules to expand capacity on a long-haul G.652.D dark fiber route utilizing a passive 1550nm CWDM channel. The optical transmit power and receiver sensitivity provided a very healthy operating margin above the threshold, even after passing through our intermediate patch panels. Built-in DOM functions integrate directly with our enterprise SNMP collector, delivering accurate real-time telemetry on transceiver internal temperature and voltage. Truly a high-grade 1G CWDM solution for carrier and enterprise networks.
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492338
453620
O***m
Belgium
Verified
Purchase
5 .0
2025-07-19
After running a 2-month continuous trial in our central office distribution racks, these 1G CWDM 40km SFP transceivers have demonstrated absolute uptime with zero link flapping. Standard MSA compliance ensures a perfect physical fit across high-density line cards without obstructing adjacent duplex LC ports. The laser driver circuitry maintains tight optical power control regardless of ambient room temperature fluctuations. Highly recommended for any serious network infrastructure team.
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492338
453622
I***e
Singapore
Verified
Purchase
5 .0
2025-06-18
Ordered 20 for a campus network refresh. Every single one powered up and linked at 1.25G. Packaging was solid, each module tested clean. Great 40km CWDM SFP option for the money.
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character.
492338
453608
P***s
Mexico
Verified
Purchase
5 .0
2025-02-11
We were looking for cost-effective alternatives to costly OEM optics for our campus distribution layer. These 1G 1550nm CWDM SFP transceivers slotted in without throwing any unsupported transceiver warnings.
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