The BiDi SFP Module serves as a fully compatible, plug-and-play replacement for the Cisco SFP-1GBX-U-SC-CO transceiver. Delivering 1.25Gbps gigabit bandwidth and stable 20km single-mode fiber transmission, this simplex SC port bidirectional optical transceiver features a professional Tx1310nm/Rx1550nm single-fiber wavelength design. It cuts fiber core consumption by 50%, delivering outstanding cost performance for enterprise campus networking, FTTx broadband access and long-distance security monitoring deployments.
Compliant with SFP MSA SFF-8431/SFF-8472 and IEEE 802.3z global standards, this Cisco-compatible BiDi SFP Module supports real-time DDM/DOM digital diagnostic monitoring and safe hot-swap operation. Every unit undergoes strict 24/7 continuous aging testing to deliver stable, error-free gigabit performance for long-term commercial network deployment.
Key Technical Specifications
The table below displays factory-calibrated technical parameters fully matching the original Cisco SFP-1GBX-U-SC-CO specifications. All optical and electrical metrics meet commercial and telecom-grade standards for reliable 20km single-fiber bidirectional transmission.
| Cisco Compatible |
SFP-1GBX-U-SC-CO |
Vendor Name |
HYTOPTODEVICE |
| Form Factor |
SFP |
Max Data Rate |
1.25Gbps |
| Wavelength |
TX1310nm/RX1550nm |
Max Distance |
20km |
| Connector |
Simplex SC |
Transmitter Type |
1310nm FP |
| Cable Type |
SMF |
Receiver Type |
PIN |
| TX Power |
-9.0~0dBm |
Receiver Sensitivity |
< -23.0dBm |
| Protocols |
SFF-8472 MSA Compliant, IEEE 802.3ah-2004 |
Operation Temperature |
0 to 70°C (32 to 158°F) |
Usage Guidelines
To ensure optimal performance and longevity of your BiDi SFP transceivers, please follow these operational practices:
1. Complementary Pairing Requirement: Bidirectional transceivers require strict wavelength-matched pairing for valid network links. This Tx1310/Rx1550nm transceiver must be paired with a Tx1550/Rx1310nm module at the opposite end; mismatched wavelength combinations result in complete link failure.
2. Single-Mode Fiber Compatibility: Designed exclusively for standard 9/125μm single-mode fiber (SMF) and SC/UPC connectors, this transceiver is incompatible with multi-mode fiber (MMF). MMF deployment causes severe signal attenuation, random bit errors and unstable network operation.
3. Transmission Distance & Attenuation Control: Optimized for reliable 20km long-range single-fiber transmission. For short-distance testing and deployment under 5km, install a professional optical attenuator to prevent receiver overpowering, signal saturation and permanent optical chip damage.
4. Optical Port Dust Protection: SC optical ports are highly sensitive to dust and fingerprint contamination. Always install protective dust caps on idle module ports and fiber connectors to avoid scratches, contamination and degraded optical transmission performance.
5. Standard Hot-Swap Operation: This MSA-compliant transceiver supports safe hot-swappable installation. To avoid link flapping and system recognition errors, wait several seconds between module removal and reinsertion to complete full hardware reset.
Full Compatibility List and Supported Devices
1. Native Cisco Platform Compatibility
This plug-and-play transceiver delivers full compatibility with mainstream Cisco switches, routers and firewalls featuring standard SFP slots. Preloaded with valid vendor credentials, it eliminates “unsupported transceiver” warnings without manual CLI configuration. Fully compatible Cisco hardware models are listed below:
-
Cisco Catalyst Switches: 2960, 3560, 3750, 3850, 9200, 9300 Series
-
Cisco ISR Routers: 1900, 2900, 3900 Series
-
Cisco Security Hardware: ASA Series Firewalls
-
Other Devices: Cisco standard SFP-port media converters
2. Multi-Brand Cross Compatibility
This universal bidirectional transceiver supports flexible cross-brand interoperability, adapting to both open-standard and locked-brand network hardware for diverse multi-vendor network environments.
1. Open-Brand Compatibility: Works out of the box with all MSA-compliant open network devices, including MikroTik, TP-Link, Fortinet, D-Link and Zyxel gigabit switches and routers. No custom coding required for standard deployment.
2. Locked-Brand Compatibility: Fully adaptable to brand-locked enterprise hardware such as Huawei, H3C, Juniper and Arista. Custom EEPROM programming ensures flawless device recognition and zero enterprise-level compatibility errors.
3. Free Custom EEPROM & Bulk OEM Service
We provide free custom EEPROM programming and basic bulk OEM services for all orders. Custom brand firmware eliminates transceiver error alerts on locked network platforms, with customizable labeling and packaging available for large-scale project deployment — zero hidden fees included.
Primary Application Scenarios
As a cost-effective single-fiber bidirectional networking solution, the 1.25G 20km SC transceiver is widely deployed in network scenarios with limited fiber resources and stable gigabit transmission demands.
-
Enterprise campus network gigabit interconnection and network renovation
-
FTTB/FTTH residential community single-fiber broadband access
-
IP camera long-distance fiber monitoring transmission for parks, factories and communities
-
Industrial park, campus and hospital private communication network construction
-
Data center low-speed gigabit link aggregation and structured cabling
-
Project renovation and expansion with insufficient existing fiber core resources
Connectivity Solutions (Applications)
1. 1G Link for Switch to Switch
Deploy paired BiDi SFP Module to build stable 20km single-fiber gigabit links between core and access switches. This solution cuts fiber resource usage by half, maintains low-latency data forwarding, and supports cross-building enterprise network interconnection.
2. 1G Link for Switch to Media Converter
Pair this Cisco-compatible BiDi SFP Module with single-fiber media converters to extend remote network coverage. Ideal for branch offices and off-site monitoring points, it delivers stable error-free gigabit transmission over 20km single-mode fiber.
3. 1G Link for Structured Cabling
This SC-type BiDi SFP Module optimizes building structured cabling systems by simplifying fiber layout and reducing deployment costs. It provides scalable, high-stability bidirectional gigabit links for unified multi-building network infrastructure.
Core Product Features
1. Increasing Utilization of Existing Fiber
Traditional dual-fiber optics require two cores for bidirectional communication, while this BiDi SFP Module adopts WDM technology to transmit and receive data via only one fiber core. It maximizes utilization of existing idle fiber resources, improves overall fiber efficiency, and avoids redundant cabling during network upgrades.
2. Double Your Network Capacity
By enabling bidirectional transmission on a single fiber strand, this professional BiDi SFP Module effectively doubles network link capacity without additional fiber deployment. It offers a low-cost, high-efficiency bandwidth expansion solution for enterprise network upgrades and FTTx access network optimization.
3. Stable 1G Connectivity: The Groundwork for High-Availability Data Centers
In an era where data centers are scaling to 100G, 400G, and beyond, the stability of your underlying 1G infrastructure remains the true backbone of operational continuity. Our enterprise-grade BiDi SFP Module 1G connectivity solutions deliver rock-solid, low-latency performance where reliability matters most. From critical Out-of-Band (OOB) management to real-time environment monitoring, we ensure your control plane is always online, always stable, and completely isolated from production traffic spikes.
4. Tested in The Host Device to Prove Interoperability
Every batch of this BiDi SFP Module undergoes real-device interoperability testing on Cisco, Huawei, H3C and other mainstream network hardware. We verify link handshake stability, DDM monitoring accuracy and hot-swap performance in real network environments, ensuring 100% compatibility and eliminating on-site deployment risks.
5. Comprehensive Factory Testing for Stable Performance
Each BiDi SFP Module passes strict standardized testing, including high/low temperature aging, repeated plugging durability, optical power consistency and 72-hour continuous operation testing. Rigorous quality control guarantees stable batch performance and long service life for commercial network applications.
FAQ
Q1: Will this Cisco compatible BiDi SFP Module trigger unsupported transceiver errors on Cisco IOS?
A1: No. Our Cisco-compatible bidirectional transceiver supports free custom EEPROM programming for bulk orders. Preloaded with authentic Cisco vendor ID data, the module is fully recognized by Cisco IOS without unsupported transceiver warnings or error codes, requiring no manual CLI configuration.
Q2: Can this 20km BiDi SFP Module achieve stable transmission on aging and lossy fiber lines?
A2: Yes. This 20km bidirectional transceiver features a 12dB high optical power budget, sufficient to offset fiber attenuation, connector loss and splice loss on aging network lines. Factory-simulated degraded fiber tests ensure stable error-free 20km transmission for network renovation projects.
Q3: Do I need to purchase additional tools or pay hidden fees for module reprogramming?
A3: No hidden fees. All EEPROM rewriting, brand adaptation and parameter calibration services for bidirectional transceivers are 100% free for bulk customers. Our in-house lab provides full professional programming support with no extra charges for tools or technical adjustments.
Q4: Is the DDM monitoring function of this BiDi SFP Module accurate and free of false alarms?
A4: Yes. Every bidirectional transceiver is fully calibrated for optical power, temperature and bias current before shipment. Telecom-standard alarm thresholds filter transient signal jitter, ensuring precise DDM monitoring and zero false network alarms.
Q5: Will using this third-party BiDi SFP Module void my switch hardware warranty?
A5: No. This bidirectional transceiver strictly complies with SFP MSA international standards and causes no damage to switch hardware. Mainstream network vendors do not void device warranties for MSA-compliant third-party transceivers. We provide official specification documents for warranty support if required.
Q6: Does this BiDi SFP Module support hot-swap operation?
A6: Yes. This bidirectional transceiver features full hot-swap compliance, supporting safe online plug-and-play without device shutdown. It avoids system crashes, link flapping and data loss during replacement for easy on-site maintenance.
Q7: What is the bulk order lead time for this Cisco compatible BiDi SFP Module?
A7: We maintain stable stock for this popular 1.25G bidirectional transceiver. Standard bulk orders take 5–8 working days; customized EEPROM or private packaging orders take 10–15 working days. Priority production is available for urgent projects.
Q8: Is professional technical support available if the BiDi link fails to come up after installation?
A8: Yes. We provide full-lifecycle free technical support for all buyers of our bidirectional transceivers. Our professional team offers remote link debugging, compatibility verification and fault analysis to resolve all network connection issues.
Q9: Does this module meet RoHS and CE environmental certification standards?
A9: Yes. All bidirectional transceiver products comply with RoHS environmental regulations and CE electromagnetic compatibility standards. Complete certification documents are available for project bidding, customs clearance and audit requirements.
Q10: Can this BiDi SFP Module work for short-distance links within 5km?
A10: It works but requires an optical attenuator. This high-power 20km bidirectional transceiver causes receiver overload and bit errors in short-distance links. Using a standard attenuator ensures stable short-range transmission and protects module hardware.
Why Network Engineers Choose HYTOPTODEVICE
HYTOPTODEVICE has supplied over 5000,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.
- 100% hardware-tested compatibility with Cisco, Huawei,Dell,Juniper, and Arista
- ISO 9001:2015 certified manufacturing facility in Shenzhen
- Full product range coverage:1.25G/10G/25G/40G/100G/200G/400G/800G/1.6T
- In-stock supply & fast global shipping, average lead time of 3–5 business days with DHL/FedEx express options
- Dedicated pre-sales engineering support for custom configurations
- Actual hardware,actual switches,actual results.we publish compatibility test video,eliminate compatibility anxiety. you can watch before you buy.
- We can provide inspection and shipping videos to make you feel as if you are right here with the product.
- Private Label support - EEPROM / firmware customization support
“Phenomenal performance. We deployed 200 HYTOPTODEVICE SFP modules to replace Cisco OEMs in our backbone network. Result? Zero compatibility issues and a 60% reduction in costs. Highly recommended for mission-critical networks."— Senior Network Engineer, Regional Telecom, Australia
Quality Certification & Compliance
At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final visual inspection, from IQC、IPQC、FQC to OQC, our processes ensure global compliance and reliability.
We adhere to rigorous standards for our SFP modules and network solutions:
-
ISO 9001: Certified quality management and production consistency.
-
CE & FCC: Fully compliant for seamless Global Market Access.
-
RoHS: Committed to environmental responsibility and hazardous material control.
-
Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.
Certified Quality. Global Standards. Guaranteed Performance.
Rigorous Industrial Product Testing
100% 3rd Party Compatible
Partial Test Demonstration
Others
