OEM 100G QSFP28 SR4 Manufacturer & Pricelist

High-Density 850nm MPO Multimode Transceivers Built for Next-Generation Hyper-Scale Data Centers

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Verified Expertise

Kocent Optec Limited

Established in 2012 in Hong Kong as a high-tech communication enterprise, Kocent Optec Limited has emerged as one of China's premier fiber optic termination product manufacturers and end-to-end transceiver solution providers.

We are dedicated to developing and manufacturing state-of-the-art optical communication solutions ranging from passive components to active transceivers for telecommunication networks, hyperscale data centers, and modern enterprise systems. By combining over 13 years of technical excellence with mature scientific production frameworks, we empower our global clients to maximize bandwidth while streamlining installation costs.

13+
Years Industry Experience
100%
Tested & Certified
Kocent Optec Manufacturing Facility
Technical Deep-Dive

Understanding the Architecture of 100G QSFP28 SR4

Unlocking high-bandwidth efficiency with multi-lane VCSEL arrays and MPO/MTP physical connectivity.

VCSEL & Photodetector Design

The QSFP28 SR4 module integrates four parallel lanes operating at 25.78125 Gbps. Utilizing vertical-cavity surface-emitting laser (VCSEL) arrays at 850nm, it guarantees power-efficient short-reach transmission over multimode fiber.

MPO/MTP Interconnect Interfaces

Designed with standard 12-fiber MPO/MTP male connector ports. Utilizing the outer 4 lanes for transmission and the remaining outer 4 lanes for reception, this architecture ensures high alignment precision and minimal insertion loss.

Real-time DDM Monitoring

Digital Diagnostic Monitoring (DDM/DOM) via the I2C interface allows network administrators to view live statistics on optical output power, receiver input power, laser bias current, module temperature, and voltage.

Parameter / Specification Operational Values (Standard SR4) Kocent Optec OEM Custom Standard
Form Factor QSFP28 (Quad Small Form-factor Pluggable 28) Fully MSA Compliant (SFF-8665 / SFF-8636)
Data Rate 103.125 Gbps (4x 25.78 Gbps) Up to 112 Gbps for OTU4 customization
Wavelength 850nm Nominal Ultra-stable VCSEL Arrays
Fiber Link Distance 70m on OM3 / 100m on OM4 Extended-reach screening available (up to 150m OM4)
Power Consumption < 2.5 Watts Low-Power Design (< 1.8W typical)
Operating Temperature 0°C to 70°C (Commercial Class) Industrial temperature variants (-40°C to 85°C)
Fiber Optic Component Polishing and Assembly Area
Supply Chain Stability

Unrivaled Production Capacity & Quality Control

Leveraging our mature production capacity, we amplify results for our OEM and ODM clients, expanding their market competitiveness. We view ourselves as your dedicated partner in fiber optic connection solutions, transforming our high-efficiency manufacturing capabilities into your corporate advantages.

  • State-of-the-Art Test Automation: Every 100G QSFP28 SR4 transceiver undergoes extensive bit-error rate testing, optical eye diagram measurement, and cross-compatibility verification with major switch brands.
  • Raw Material Assurance: Stable partnerships with leading semiconductor vendors and optical component foundries guarantee stable product delivery and insulation against market shortages.
  • OEM Custom Coding: We offer custom configuration of EEPROM register coding, compatible with Cisco, Juniper, Arista, Dell, HP, and Huawei switches.
Real-World Deployment

Target Applications for 100G QSFP28 SR4 Modules

Maximizing short-distance fiber networks across high-throughput physical infrastructures.

Hyperscale Cloud Centers

For spine-and-leaf switches where millions of computations take place, QSFP28 SR4 modules bridge intra-rack and inter-rack connectivity over high-speed OM3 or OM4 multimode ribbon cables.

High-Frequency Trading

Financial transaction engines require minimum latency. Utilizing optical transceivers with high-speed serial links over multimode fiber guarantees packet delivery without thermal overhead or signal jitter.

Enterprise Core Switching

For corporate offices, campus networks, and distributed sites needing local network aggregation, our QSFP28 SR4 modules integrate with legacy patch panels and switches to form a reliable 100G backbone.

Quality Assurance

100% Tested and Inspected Manufacturing Standards

With more than 13 years of expertise in manufacturing optical solutions, we strictly adhere to rigorous fiber optic industry protocols. Utilizing mature scientific procedures, we verify that 100% of our products undergo full functional testing and inspection before they leave our factory.

Every transceiver module is loaded into our automated test beds where digital optical parameters are verified. We validate eye diagrams, bit error ratios, and system compatibility against target switch firmware, reducing field failures to virtually zero.

Kocent Optec Precision Optical Testing
Global Footprint

Serving Operators & Enterprises Globally

Through years of commitment to engineering quality, Kocent Optec has developed strong relationships with leading tier-1 telecom operators and system integrators worldwide.

Our OEM and ODM optical products are qualified in telecom tenders and meet strict quality criteria. We support deployments in East Asia, Southeast Asia, the Middle East, Europe, South America, North America, and Africa.

Trusted Partners Include

SingTel Vodafone America Movil Telefonica Bharti Airtel Orange Telenor VimpelCom TeliaSonera Saudi Telecom MTN Viettel Bitel VNPT Laos Telecom MYTEL Telkom Telekom Entel Ooredoo
Pricing Structure

100G QSFP28 SR4 Pricelist & Cost Estimation

A transparent guide to understanding factors that influence OEM pricing for volume orders.

In order to maintain transparency and provide cost-effective sourcing for hardware integrators, our pricing model scales according to order volume, optical engine grade, and custom programming requirements. Below is an indicative reference matrix for project budgeting.
Order Tier (Qty Units) Indicative Price Range (USD/Unit) Custom Services Included Production Lead Time
1 - 50 Units Contact for Quote Standard compatibility coding (Choice of 1 major brand) 1 - 3 Days
51 - 200 Units Volume Discount Tier 1 EEPROM Custom coding + Custom retail labelling 3 - 5 Days
201 - 1000 Units Volume Discount Tier 2 EEPROM Coding + Laser print customized serials + Independent testing reports 5 - 10 Days
1000+ Units (Enterprise Bulk) Wholesale Direct Contract Dedicated engineering validation + Direct MSA raw telemetry access + Fully customized packaging Scheduled Delivery (2-3 weeks)
Future Roadmap

The Evolution of Data Center Interconnects: From 100G to 400G & Beyond

Analyzing future physical layer transitions and the path toward silicon photonics.

PAM4 Modulation Integration

As optical designs move from 100G NRZ toward higher densities, PAM4 technology packs twice as many bits per symbol, forming the building blocks of 400G (using QSFP-DD SR8 or FR4) and 800G connectivity.

Silicon Photonics & Co-Packaging

Future enterprise architectures will integrate optical engines directly onto the silicon switch substrate (Co-Packaged Optics - CPO). This reduces channel resistance and lowers power usage per gigabit.

Sustainability in Optical Design

Scaling up requires minimizing the carbon footprint of big networks. Modern transceivers use low-power microcontrollers and upgraded cooling options to lower total operational overhead.

Customer Assurance

Worldwide Compliance & Local Technical Support

To support international deployments, Kocent Optec guarantees compliance across global regulatory frameworks. All standard modules undergo CE, FCC, RoHS, and REACH certification, ensuring safety and compliance across global jurisdictions.

  • 3-Year Limited Hardware Warranty: Defective modules within the warranty term are eligible for advanced replacement to minimize network downtime.
  • On-Demand Lab Verification: Customers can request custom verification of network environments in our state-of-the-art laboratory before purchasing.
  • Global Logistics Partners: Fast delivery via DHL, FedEx, and UPS guarantees safe, reliable transit from our factory straight to your data center.

Regulatory Compliance Checklist

CE Certified (EN 60825-1, EN 60825-2)
FCC CFR Title 47 Part 15 Compliant
RoHS Directive 2011/65/EU and Amendments
REACH Compliance (SVHC list verified)
Telcordia GR-468-CORE Reliability Standard
Frequently Asked Questions

Tech Support & FAQ: 100G QSFP28 SR4 Transceivers

Clear answers to common questions about deployment, physical infrastructure, and ordering.

What is the maximum link length of a 100G QSFP28 SR4 transceiver? +
The maximum reach depends on the category of multimode fiber (MMF) used. Over standard OM3 fiber, the reach is up to 70 meters. Over OM4 fiber, the reach extends up to 100 meters. For OM5 fiber links, distances up to 150 meters can be achieved under optimal alignment and low connector attenuation settings.
Can a 100G QSFP28 SR4 transceiver breakout to 4x 25G SFP28 links? +
Yes, absolutely. The QSFP28 SR4 uses a 4-channel parallel transmission scheme. Using a standard MPO-to-4x-LC duplex breakout cable, you can split the 100G link into four separate 25G connections, allowing you to connect 100G switches directly to legacy 25G server network interface cards (NICs).
What type of patch cables are compatible with the QSFP28 SR4? +
The module requires a multimode patch cable with a female MPO or MTP connector (typically 12-fiber MPO with Type-B polarity for straight switch-to-switch links). Standard OM3 or OM4 (850nm optimized) fiber is highly recommended to maintain signal integrity and prevent insertion-loss failures.
Does Kocent Optec guarantee compatibility with switches from major network equipment manufacturers? +
Yes. Every module we ship is configured with custom EEPROM coding before delivery. We maintain a compatibility testing lab with hardware from Cisco, Arista, Juniper, Dell, Extreme, Edge-Core, Intel, and others, ensuring seamless plug-and-play installation.
What is the lead time for large OEM/ODM volume shipments? +
Standard orders under 100 units are usually shipped from stock or prepared within 3 days. Larger bulk orders (1,000+ units) typically require 7 to 15 days, depending on compatibility coding requirements and current component availability.
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