• HYTOPTODEVICE Arista QSFP-100G-LR compatible 100G QSFP28 single lambda 1310nm LR 10km OS2 SMF transceiver
  • HYTOPTODEVICE 100GBASE-LR PAM4 QSFP28 transceiver with KP4 FEC for Arista 10km data center links
  • HYTOPTODEVICE zero alarm plug and play QSFP-100G-LR replacement 100G LR QSFP28 transceiver
  • HYTOPTODEVICE Arista QSFP-100G-LR compatible 100G QSFP28 single lambda 1310nm LR 10km OS2 SMF transceiver
  • HYTOPTODEVICE 100GBASE-LR PAM4 QSFP28 transceiver with KP4 FEC for Arista 10km data center links
  • HYTOPTODEVICE zero alarm plug and play QSFP-100G-LR replacement 100G LR QSFP28 transceiver

Intel SPTSLP4SLCDF Compatible 100G QSFP28 Transceiver Single Lambda | LR 1310nm 10km Bulk Wholesale | HYTOPTODEVICE

HYTOPTODEVICE Arista QSFP-100G-LR compatible 100G QSFP28 transceiver, single-lambda 100GBASE-LR 1310nm PAM4 with KP4 FEC, 10km OS2 single-mode fiber. IEEE 802.3cd & 100G Lambda MSA compliant, pre-programmed EEPROM for zero-alarm deployment on Arista switches, ideal for leaf-spine fabric and inter-building campus data center connections. Support bulk wholesale, private label and custom EEPROM coding available for global importers, distributors and integrators.
NO. Brand  Compatible P/N Remarks
1 Cisco  QSFP-100G-LR-S
2 Arista Networks QSFP-100G-LR
3 Intel  SPTSLP4SLCDF
4 Huawei   QSFP-100G-LR1 
5 Extreme  100G-LR-QSFP10KM 
6 Juniper  QSFP-100G-LR
7 Brocade  100G-QSFP28-LR-10KM
8 Dell  100G-QSFP28-LR
Description
Intel SPTSLP4SLCDF Compatible 100G QSFP28 Transceiver Module Single Lambda | LR 1310nm  10km SMF Duplex LC | HYTOPTODEVICE

Product Overview

This 100G QSFP28 transceiver acts as a cost-effective drop-in replacement for Arista QSFP-100G-LR, engineered to integrate seamlessly with Arista data center and campus switching systems.
It leverages single-lambda PAM4 modulation plus built-in KP4 FEC error correction, enabling reliable 100G Ethernet transmission up to 10km over OS2 single-mode fiber. The onboard DSP consolidates four 25G NRZ electrical lanes into one 100G PAM4 optical stream, maintaining robust signal integrity across inter-floor, campus and inter-building long-distance links.
Fully compliant with IEEE 802.3cd, QSFP28 MSA and 100G Lambda MSA standards, the module supports DDM/DOM real-time optical diagnostics. Pre-flashed Arista-tailored EEPROM enables hot-swap deployment with reduced system warning logs, well suited for leaf-spine fabrics, long-range aggregation trunks and gradual 100G-to-400G FR4 breakout migration.


Key Technical Specifications

Intel Compatible   SPTSLP4SLCDF Vendor Name HYTOPTODEVICE
Form Factor QSFP28 Max Data Rate 100Gbps Single Lambda
Wavelength 1310nm
Max Distance 10km
Connector Duplex LC/UPC Transmitter Type EML
Cable Type SMF Receiver Type PIN
FEC Support Yes TX Power -1.4~+4.5dBm
Power Consumption <4.5W Receiver Sensitivity < -4.5dBm
Protocols QSFP28 MSA, SFF-8636,IEEE 802.3cu,CAUI-4 Operation Temperature 0 to 70°C (32 to 158°F)


Usage Guidelines & Best Practices

  • Fiber Requirement: Only OS2 single-mode fiber; OM3/OM4 multimode fiber cannot support 1310nm PAM4 transmission and will cause link failure.
  • FEC Configuration: Enable KP4 FEC on Arista switch ports to maximize 10km link margin and sustain low BER stability.
  • Installation Specification: Hot-plug supported; keep LC end faces clean and maintain proper bend radius to avoid extra attenuation.
  • Distance Limit: Rated for 10km OS2 SMF; excessive splices, contaminated connectors or tight bends reduce effective transmission distance.
  • Operating Environment: Commercial temperature 0°C–70°C; keep ports dry and dust-free to extend QSFP28 transceiver service life.

Full Compatibility List & Supported Network Hardware

1. Supported Hardware & Firmware
HYTOPTODEVICE QSFP-100G-LR compatible QSFP28 transceivers match original form factor and optical parameters. Pre-programmed Arista-compatible EEPROM supports plug-and-play operation on mainstream Arista switching platforms. Every unit passes real-device verification to minimize unrecognized module alerts, negotiation drops and intermittent link instability.
Validated Arista Platforms:
  • Arista 7050SX3, 7060SX2 leaf-spine data center switches
  • Arista 7280R, 7280SR high-density 100G aggregation switches
  • Arista 7500 modular core chassis switches
  • All Arista devices with standard QSFP28 100GBASE-LR port profiles

2. Multi-Brand Cross Compatibility

Built on universal MSA specifications, these QSFP-100G-LR replacement QSFP28 transceivers support broad multi-vendor interoperability. They operate alongside Aruba, Huawei, Brocade, Dell, Juniper, H3C and NVIDIA/Mellanox equipment, simplifying hybrid fabric construction and long-distance interconnection for Arista-based networks.

3. Free Value-Added Services

HYTOPTODEVICE provides free Cisco-specific EEPROM rewriting, private label customization and deployment consultation. All QSFP28 transceivers complete optical calibration, temperature cycling and 72-hour full-load aging before shipment. Bulk pricing helps reduce network CAPEX and recurring operational expenditure.

Primary Application Scenarios
  • Campus-scale leaf-spine inter-switch links for Arista data center fabrics
  • Long-reach 100G Ethernet inter-building and cross-floor backbone connections
  • 400G PLR4 to 4×100G LR1 optical breakout for gradual data center bandwidth upgrade
  • 100G ToR uplinks connecting Arista switches to AI, HPC and virtualization server racks
  • Enterprise core and aggregation layer 100G trunk expansion over 10km fiber spans
  • Multi-vendor hybrid infrastructure long-distance inter-switch interconnection
Connectivity Solutions(Applications)

1. 100G to 100G for Switch-Switch Interconnection
This QSFP-100G-LR compatible QSFP28 transceiver extends core-to-aggregation trunk reach. It reuses existing OS2 single-mode fiber to deliver reliable 100G long-distance trunking without wholesale cable replacement

HYTOPTODEVICE 100G switch-switch interconnection 10km LR QSFP28 transceiver for core trunks

2.100G to 100G for Switch-NIC Connection

With rated 10km performance, the QSFP28 transceiver builds dependable long-range 100G uplinks between Arista ToR switches and server NICs. Compact duplex LC cabling supports dense rack layouts, suited for HPC and AI clusters while reserving bandwidth headroom for future 400G upgrades.

HYTOPTODEVICE 100G switch-NIC uplink QSFP28 transceiver for Cisco server cluster connections

3.100G to 400G Smooth Network Migration

Supporting standard 400G PLR4 breakout, our 100G LR QSFP28 transceivers enable mixed 100G/400G fabrics for Arista data centers. Operators expand bandwidth incrementally while preserving existing switches and fiber, lowering maintenance downtime and renovation costs.




The Core Feature 

1.Phased upgrade without full infrastructure replacement

Single-lambda PAM4 design and standard KP4 FEC enable seamless 400G PLR4 breakout migration. Customers scale bandwidth batch by batch while reusing Cisco switching and fiber assets, maximizing hardware utilization and cutting total TCO.



2.
Verified Host Interoperability

Pre-flashed Cisco-adapted EEPROM firmware; all HYTOPTODEVICE QSFP28 transceivers pass real-machine verification across Cisco generations. Zero-alarm plug-and-play recognition without link flapping, port lockdowns or compatibility errors on both legacy and newer hardware.
HYTOPTODEVICE QSFP-100G-LR-S compatible QSFP28 transceiver verified interoperability on Cisco switching platforms

3.Comprehensive Factory Testing & Reliable Performance

Every QSFP28 transceiver undergoes optical calibration, high-low temperature cycling and 72-hour full-rate aging before shipment. Power consumption ≤4.5W reduces switch thermal load and data center PUE, ensuring ultra-low BER and 24/7 reliable commercial operation.

HYTOPTODEVICE 100G LR QSFP28 transceiver comprehensive factory testing stable performance for Cisco networks



FAQ

Q1: What defines a 100G Single Lambda LR 10km QSFP28 transceiver?
A: HYTOPTODEVICE 100G Single Lambda LR QSFP28 transceiver carries full 100G payload over one 1310nm wavelength. Built with PAM4 modulation and KP4 FEC, it delivers 10km OS2 fiber reach and serves as a practical long-distance optic for Arista campus data center links.

Q2: Why are 100G long-range optics built in QSFP28 instead of SFP28?
A: SFP28 only delivers 25G per channel, while HYTOPTODEVICE QSFP28 aggregates four 25G lanes to deliver native 100G. This form factor fits Arista 100G port layouts and supports 400G PLR4 to 4×100G optical breakout without extra adapters.

Q3: Can this 100G Single Lambda LR QSFP28 negotiate down to stable 40G?
A: Consistent 40G downgrade is not supported. Our 100G LR QSFP28 DSP and single-lambda PAM4 circuitry are optimized for 100G operation. Forced 40G settings often trigger unstable sessions and random packet loss on Arista platforms.

Q4: Can 100G Single Lambda LR connect directly with traditional 100G LR4 transceivers?
A: Direct optical pairing does not function. HYTOPTODEVICE single-lambda LR consolidates data on one wavelength, while LR4 uses four independent wavelengths. Lane structure and optical framing differ; matching transceiver types on both ends is mandatory.

Q5: Why does Arista switch report link up yet suffer heavy packet loss on 100G LR links?
A: Link-up status only detects light presence, not usable signal quality. Common causes include mismatched KP4 FEC modes, excessive fiber attenuation, dirty LC connectors, or receiver power near sensitivity limits. Our QSFP28 modules offer precise DDM for fast troubleshooting.

Q6: Why can Tx power be read while DDM registers zero Rx power on 100G LR QSFP28?
A: This symptom points to one-way optical path failure. Inspect reversed Tx/Rx patch cords, broken fiber strands, scratched connector faces, or faulty remote receivers. HYTOPTODEVICE DOM monitoring helps accelerate fault identification.

Q7: Can 100G Single Lambda LR operate reliably beyond its 10km rated span?
A: Production deployment past 10km is not recommended. HYTOPTODEVICE 10km optical budget assumes standard OS2 fiber and typical connector loss. Longer spans eliminate signal margin and cause silent packet loss without immediate port-down alerts.

Q8: Does fully populating Arista high-density switches with 100G LR QSFP28 create thermal risks?
A: Each HYTOPTODEVICE QSFP28 consumes modest power, but dense port loading accumulates heat. Blocked vents or insufficient front-to-back airflow raise module temperature, reducing optical margin and shortening laser lifespan over time.

Q9: Where does 100G Single Lambda LR gain cost advantages versus 100G LR4 transceivers?
A: HYTOPTODEVICE 100G LR QSFP28 removes multi-wavelength combining and splitting components. Simplified optical architecture cuts production and testing expenses, delivering equivalent 10km performance at lower unit cost for leaf-spine and campus backbone builds.

Q10: Does the published 10km rating of 100G LR QSFP28 include real-world connector and splice loss?
A: The stated 10km assumes clean, properly mated LC connectors and minimal splices. Extra adapters, contaminated end faces or excessive fusion splices add unexpected loss and reduce the usable distance of HYTOPTODEVICE 100G LR transceivers.

Q11: Which 400G transceiver supports optical breakout to 100G Single Lambda LR QSFP28?
A: Only 400G PLR4 enables direct optical 4×100G breakout with HYTOPTODEVICE 100G LR QSFP28. 400G FR4 and LR4 use CWDM wavelength multiplexing over duplex LC and lack parallel optical lanes; they cannot be split optically into four independent 100G LR1 links.

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.

  • Up to 70% cost savings vs OEM, transparent pricing & flexible bulk rates, supported quality returns
  • 100% real-device compatible with Cisco, Huawei,Dell,Juniper, and Arista
  • ISO 9001:2015 Shenzhen factory, full lineup: 1.25G/10G/25G/40G/100G/200G/400G/800G/1.6T transceivers
  • Ample stock, fast global DHL/FedEx shipping in 3–5 working days
  • Free pre-sales engineering support for custom EEPROM  & private label firmware
  • Real switch test videos available for pre-purchase review; inspection & shipping videos provided per order

“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

   hytoptodevice check device and equiptment for optical transceiver module

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  • HYTOPTODEVICE Arista QSFP-100G-LR compatible 100G QSFP28 single lambda 1310nm LR 10km OS2 SMF transceiver
  • HYTOPTODEVICE 100GBASE-LR PAM4 QSFP28 transceiver with KP4 FEC for Arista 10km data center links
  • HYTOPTODEVICE zero alarm plug and play QSFP-100G-LR replacement 100G LR QSFP28 transceiver

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