H3C SFP-GE-LH80-SM1550 Compatible 1000BASE-ZX Optical Module | SFP 1550nm 80km SMF Bulk Wholesale | HYTOPTODEVICE

Usage Guidelines & Best Practices

• Fiber Choice: Use Single-Mode Fiber (SMF) only. Do NOT use MMF
• Laser Safety: Never look directly into optical ports or fiber ends.

• ESD Safety:: Wear an anti-static wrist strap before handling.

• Connector Match: UPC/PC polish only. Do NOT use APC

• Cleanliness & Dust: Keep dust caps on all unused ports and connectors at all times. Clean fiber end-faces with a optical cleaning pen before insertion; dust causes over 80% of optical link failures.

• Optical Attenuator Required for Short Links: For testing or short-distance connections (<10 km), connect a 10dB–15dB optical attenuator to the RX port to prevent damaging the receiver.

Full Compatibility List and Supported Devices

1. Supported Hardware & Firmware

2. Multi-Brand Cross Compatibility

3. Free Value-Added Services

Main Application Scenarios

• Backbone Network Deployment: HYTOPTODEVICE 80km ZX modules for cross-region and suburban long-haul fiber links.
• Distributor Bulk Stocking: Cost-effective H3C SFP-GE-LH80-SM1550 compatible modules for wholesale inventory and project delivery.
• H3C Network Expansion: Replace short-range modules with our 80km transceivers to extend enterprise network transmission distance.
• Remote Site Networking: Low-loss HYTOPTODEVICE SFP modules for remote monitoring, campus branch and base station data transmission.

Connectivity Solutions(Applications) 

1.1GbE Switch-to-Switch Connectivity


2.1GbE Switch to Media Converter Connectivity

3.1G Structured Cabling

The Core Feature

1. Low-Power, Cost-Effective Long-Haul Connectivity

Designed for high-reliability data center networks, this 1.25G 1550nm SFP optical transceiver supports long-reach transmission up to 80km. Featuring low power consumption and high cost-efficiency, it is the ideal choice for expanding your Gigabit Ethernet coverage.

2.Host-Tested for Proven Interoperability

All optical modules pass real device testing. Pre-flashed EEPROM ensures zero-alarm recognition, fixing third-party module incompatibility and link flapping for safe bulk purchase.Specific Compatibility Video available upon request.

3.100% Tested for Zero-Defect Reliability

Step inside our  Test Center  to see every optical module is 100% tested before shipment, ensuring zero-defect reliability and maximum uptime for your network.

FAQ

Q1: Are HYTOPTODEVICE 80km 1.25G SFP modules interoperable with H3C and other mainstream network devices?
A: Yes. Our HYTOPTODEVICE H3C SFP-GE-LH80-SM1550 module features multi-brand compatibility. Custom firmware ensures zero-alarm operation on all mainstream H3C switches and routers. It also works stably on Huawei, Juniper and other MSA-compliant network devices.

Q2: Does this H3C gigabit SFP module support port auto-negotiation function?
A: No. Our HYTOPTODEVICE H3C compatible transceiver is fixed at 1.25Gbps. It has no auto-negotiation function. It only runs stably on ports forced to 1000Mbps gigabit mode.

Q3: What causes H3C devices to prompt unrecognized module after inserting the SFP transceiver?
A: This issue comes from mismatched device firmware. Our HYTOPTODEVICE H3C SFP-GE-LH80-SM1550 module supports free EEPROM customization. We can adjust firmware code to match your H3C device and eliminate recognition alarms completely.

Q4: Is it feasible to insert this 1.25G SFP module into 10G SFP+ ports for network use?
A: Yes. Our HYTOPTODEVICE 1000BASE-ZX H3C module supports backward compatibility with 10G SFP+ slots. It stably runs at 1.25Gbps without link errors for mixed-rate network expansion.

Q5: Is an optical attenuator required for short-distance deployment of this 80km H3C gigabit module?
A: Yes, it is mandatory. Our HYTOPTODEVICE H3C SFP-GE-LH80-SM1550 module features up to +5dBm max TX power. Links under 20km have excessive optical power. Equip a 10-15dB attenuator to avoid signal saturation and packet loss.

Q6: What is the link budget of HYTOPTODEVICE H3C 80km long-haul optical module?
A: Our HYTOPTODEVICE H3C SFP-GE-LH80-SM1550 module has 0~+5dBm TX power and ≤-26dBm sensitivity. It provides 26dB standard link budget. Deducting 0.25dB/km 1550nm fiber loss plus connector and splice loss, the margin is fully enough for stable 80km transmission.

Q7: Why do our long-haul SFP modules maintain stable transmission without laser power deviation?
A: Uncalibrated laser drift causes jitter and packet loss. Every HYTOPTODEVICE H3C SFP-GE-LH80-SM1550 module completes strict aging calibration. It stabilizes laser output and ensures long-term stable backbone link performance.

Q8: What specification attenuator matches 30km fiber links with this 80km H3C module?
A: For 30km links using our HYTOPTODEVICE H3C SFP-GE-LH80-SM1550 transceiver, a 5-7dB attenuator is ideal. It reduces surplus optical power and keeps receiving power in the standard working range.

Q9: What interface specification is adopted by HYTOPTODEVICE 80km H3C optical transceiver?
A: Our HYTOPTODEVICE H3C SFP-GE-LH80-SM1550 module adopts standard duplex LC UPC connectors. This low-loss interface matches G.652 single-mode fiber perfectly. It ensures stable, low-insertion-loss connections for 80km long-distance gigabit transmission.

Q10: Can APC fiber jumpers be used to match H3C SFP-GE-LH80-SM1550 long-haul modules?
A: APC connectors are not compatible and not recommended. This optical transceiver is optimized for UPC interface specifications. APC angular contact causes severe signal reflection and extra loss, resulting in unstable long-distance transmission and increased packet loss rates.

Q11: Do bulk ordered HYTOPTODEVICE H3C compatible SFP modules come with protective accessories?
A: Yes. All bulk and sample units of this H3C SFP-GE-LH80-SM1550 optical transceiver are equipped with dedicated dust caps. These accessories protect laser ports from dust contamination and scratch damage during transit and long-term storage.

Q12: What is the correct way to clean the port of long-distance SFP optical modules?
A: Clean module LC ports only with professional fiber optic cleaning sticks. Ordinary cloths, alcohol wipes or water will leave residues and scratch laser surfaces. Standard cleaning effectively eliminates contamination-caused signal attenuation and link instability.

Q13: Does HYTOPTODEVICE provide temperature-customized H3C optical module solutions?
A: The standard version supports 0℃ to 70℃ commercial temperature for conventional data center deployment. We also provide customized industrial-grade modules that operate stably under extreme high and low temperatures for industrial networking scenarios.

Q14: Will ambient temperature changes affect the working performance of 1550nm long-haul modules?
A: Temperature fluctuations cause minor wavelength drift on all optical transceivers. However, this H3C 1550nm optical transceiver undergoes precise temperature aging calibration, limiting drift within industrial standards and ensuring stable 80km long-distance transmission performance.

Q15: Do high-power 80km SFP modules generate more heat than short-range fiber modules?
A: Equipped with high-power 1550nm laser chips, this long-haul H3C SFP-GE-LH80-SM1550 optical transceiver produces slightly more heat than short-range modules. Optimized internal heat dissipation structure ensures safe temperature operation during long-term high-load network running.

Packaging Options & Custom‑Packaging Solutions

Every transceiver module gets reliable ESD‑safe packaging out of the box. Standard packing is ready for immediate shipment, while custom‑printed packaging with your logo is available for bulk orders.



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% MSA-compliant modules with Cisco, Huawei,Dell,Juniper, and Arista compatibility
• ISO 9001:2015 certified manufacturing facility in Shenzhen
• 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.

"We replaced 200 Cisco-branded SFPs with HYTOPTODEVICE equivalents across our spine layer — zero compatibility issues, 40% cost reduction."— Network Architect, Tier-2 ISP, Germany

Quality Certification & Compliance

 At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final inspection, 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