• HYTOPTODEVICE Intel SPTSLP4SLCDF compatible 100G QSFP28 single lambda 1310nm LR 10km OS2 SMF transceiver
  • HYTOPTODEVICE 100GBASE-LR PAM4 QSFP28 transceiver with KP4 FEC for INTEL 10km data center links
  • HYTOPTODEVICE zero alarm plug and play Intel SPTSLP4SLCDF replacement 100G LR QSFP28 transceiver
  • HYTOPTODEVICE Intel SPTSLP4SLCDF compatible 100G QSFP28 single lambda 1310nm LR 10km OS2 SMF transceiver
  • HYTOPTODEVICE 100GBASE-LR PAM4 QSFP28 transceiver with KP4 FEC for INTEL 10km data center links
  • HYTOPTODEVICE zero alarm plug and play Intel SPTSLP4SLCDF replacement 100G LR QSFP28 transceiver

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

HYTOPTODEVICE Intel SPTSLP4SLCDF compatible 100G QSFP28 transceiver, single-lambda 100GBASE-LR 1310nm PAM4 optic with KP4 FEC, 10km OS2 single-mode fiber reach. Fully compliant with 100G Lambda MSA and IEEE 802.3cd, pre-programmed EEPROM ensures smooth interoperability on Intel-based switches and NICs, ideal for long-distance data center and campus interconnection.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 serves as a reliable alternative to Intel SPTSLP4SLCDF, engineered to operate seamlessly within Intel server, NIC and switching environments.
It adopts single-lambda PAM4 modulation combined with built-in KP4 forward error correction, delivering consistent 100G Ethernet connectivity up to 10km over OS2 single-mode fiber. The integrated DSP converts four independent 25G NRZ electrical lanes into a single 100G PAM4 optical channel, maintaining stable signal quality across campus backbones, inter-floor links and inter-building long-haul connections.
Designed to meet IEEE 802.3cd, QSFP28 MSA and 100G Lambda MSA requirements, the module supports DDM/DOM real-time optical parameter monitoring. Custom EEPROM programming removes compatibility barriers on Intel hardware, enabling hot insertion with minimal alert logs. It fits leaf-spine deployments, long-range aggregation links and phased bandwidth upgrades via 400G PLR4 optical breakout.


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 Intel 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 SPTSLP4SLCDF compatible QSFP28 transceivers match the original mechanical outline and optical specifications. Tailored EEPROM configuration enables plug-and-play operation on Intel-based switches, Ethernet adapters and storage platforms. Every unit undergoes lab verification to reduce unrecognized module warnings, link flapping and intermittent connectivity faults.
Validated Intel Platforms:
  • Intel Ethernet Switches and IPU-based leaf-spine hardware
  • Intel E810 and compatible 100G server NIC adapters
  • Enterprise storage and rack-scale computing infrastructure
  • All equipment with standard QSFP28 ports supporting 100GBASE-LR single lambda

2. Multi-Brand Cross Compatibility

Built on universal QSFP28 MSA standards, these SPTSLP4SLCDF replacement transceivers support multi-vendor interoperation. They can interconnect with Cisco, Arista, Dell, Juniper, H3C and NVIDIA/Mellanox equipment, simplifying mixed-vendor campus networks and long-distance inter-data-center links.

3. Free Value-Added Services

HYTOPTODEVICE provides customized EEPROM programming for Intel hardware, private labeling and pre-shipment performance testing. All QSFP28 transceivers pass optical calibration, thermal cycling and 72-hour continuous transmission testing before delivery. Volume orders reduce overall CAPEX for Intel-based data center builds and campus network expansions.

Primary Application Scenarios
  • Leaf-spine fabric inter-switch connections for Intel rack-scale data centers
  • Long-haul 100G Ethernet links across multi-building enterprise campuses
  • 400G PLR4 to 4×100G optical breakout for gradual bandwidth expansion
  • 100G uplinks between top-of-rack switches and Intel GPU, HPC and virtualization servers
  • Enterprise core and aggregation backbone extension over 10km single-mode fiber
  • Multi-vendor hybrid infrastructure long-distance interconnection

Connectivity Solutions(Applications)


1. 100G to 100G for Switch-Switch Interconnection
This Intel 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 Intel 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 server cluster connections

3.100G to 400G Smooth Network Migration

This module works alongside 400G PLR4 ports to enable genuine optical 400G-to-4×100G breakout. Only PLR4 supplies four parallel 1310nm lanes over MPO-12 fiber to match 100GBASE-LR1 signaling. 400G FR4 and LR4 cannot perform this optical split, as they use CWDM multiplexing over duplex LC without independent parallel channels. Data centers can deploy new 400G spine hardware while preserving existing 100G leaf ports and cabling.




The Core Feature 

1.Phased upgrade without full infrastructure replacement

Single-lambda PAM4 architecture and standard KP4 FEC support validated 400G PLR4 breakout migration. Businesses expand bandwidth step-by-step while retaining Intel switching hardware and fiber infrastructure, maximizing asset utilization and lowering total cost of ownership.



2.
Verified Host Interoperability

Custom EEPROM profiles tailored for Intel switching and NIC ecosystems; all HYTOPTODEVICE QSFP28 transceivers complete cross-generation hardware validation. Plug-and-play deployment reduces alert logs, port lockdown risks and layer-two instability on Intel infrastructure.
HYTOPTODEVICE Intel SPTSLP4SLCDF compatible QSFP28 transceiver validated on Intel switching and NIC hardware

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  networks



FAQ

Q1: What is a 100G Single Lambda LR 10km QSFP28 transceiver?
A: HYTOPTODEVICE 100G Single Lambda LR QSFP28 transceiver transmits full 100G traffic over a single 1310nm wavelength. Equipped with PAM4 modulation and KP4 FEC, it reaches 10km over OS2 single-mode fiber and serves as a stable long-range optic for Intel campus and data center interconnection.

Q2: Why do long-range 100G transceivers use QSFP28 instead of SFP28 form factor?
A: SFP28 only supports 25G per port, while HYTOPTODEVICE QSFP28 aggregates four 25G lanes to deliver native 100G. This form factor matches Intel 100G switch and NIC ports and supports 400G PLR4 to 4×100G optical breakout without intermediate adapters.

Q3: Can this Intel compatible 100G Single Lambda LR QSFP28 negotiate down to reliable 40G operation?
A: Stable 40G fallback is not supported. Our 100G LR QSFP28 DSP and single-lambda PAM4 design are calibrated for 100G line rate. Forced 40G configuration commonly creates flapping links and packet loss on Intel NIC and switch platforms.

Q4: Can 100G Single Lambda LR interconnect directly with legacy 100G LR4 transceivers?
A: Direct optical interconnection does not work. HYTOPTODEVICE single-lambda LR carries all data on one wavelength, while LR4 uses four discrete wavelengths. Lane mapping and optical framing are incompatible; both ends must run matching transceiver types.

Q5: Why does the Intel switch or NIC show link up but suffer severe packet loss on 100G LR links?
A: Link-up detection merely confirms light presence, not acceptable signal quality. Root causes include mismatched KP4 FEC settings, excessive fiber loss, contaminated LC connectors, or receiver power near sensitivity thresholds. Our QSFP28 modules deliver precise DDM readings to speed diagnosis.

Q6: Why can Tx power be detected while DDM shows zero Rx power on this 100G LR QSFP28?
A: This indicates one-way optical path failure. Check reversed transmit/receive patch cords, damaged fiber strands, scratched connector surfaces, or faulty remote receiver components. HYTOPTODEVICE DOM monitoring helps pinpoint the fault quickly.

Q7: Is production deployment beyond the 10km rating feasible for 100G Single Lambda LR?
A: Deploying past 10km in production is not recommended. HYTOPTODEVICE’s 10km optical budget assumes standard OS2 fiber and typical connector loss. Extra distance consumes signal margin and causes silent packet loss without immediate port-down events.

Q8: Will fully populating Intel high-density switches with 100G LR QSFP28 introduce thermal problems?
A: Each HYTOPTODEVICE QSFP28 draws moderate power, but dense port populations accumulate heat. Blocked airflow or poor rack ventilation raises module temperature, shrinks optical margin and accelerates laser degradation over long uptime.

Q9: How does 100G Single Lambda LR reduce total cost compared with 100G LR4 transceivers?
A: HYTOPTODEVICE 100G LR QSFP28 eliminates multi-wavelength combiners and splitters. Simplified optical architecture reduces component count and testing complexity, delivering equivalent 10km reach at lower unit cost for leaf-spine and campus backbone builds.

Q10: Does the published 10km rating include real-world connector and splice loss?
A: The rated 10km assumes clean, properly seated LC connectors and minimal splices. Additional adapters, dirty end faces or excess fusion splices introduce unexpected loss and shorten the usable distance of HYTOPTODEVICE 100G LR transceivers.

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

100% 3rd Party Compatible
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  • HYTOPTODEVICE Intel SPTSLP4SLCDF compatible 100G QSFP28 single lambda 1310nm LR 10km OS2 SMF transceiver
  • HYTOPTODEVICE 100GBASE-LR PAM4 QSFP28 transceiver with KP4 FEC for INTEL 10km data center links
  • HYTOPTODEVICE zero alarm plug and play Intel SPTSLP4SLCDF replacement 100G LR QSFP28 transceiver

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