QSFP28 modules for 100G data center links typically range from $150 to $600 per module, depending on type, reach, and vendor.

Price Ranges by Module Type

• SR4 (Short-Range, multimode, up to 100m on OM4 fiber): $150–$250 per module. Ideal for intra-rack or nearby rack connections, offering the most economical solution for short-reach links .
• LR4 (Long-Range, single-mode, up to 10 km): $400–$600 per module. Suitable for building-to-building or campus-wide interconnects, using four CWDM wavelengths over duplex LC fiber .
• CWDM4 (Single-mode, 2 km–2.5 km): $350–$500 per module. Optimized for medium-range data center interconnects with cost-effective wavelength multiplexing .
• ZR4 (Extended Reach, single-mode, up to 80 km): $800–$1,200 per module. Used for long-haul metro or telecom links, less common in standard data centers .

Factors Affecting QSFP28 Pricing

1. Engineering and Testing Costs: Modules undergo design verification and reliability testing, including temperature cycling, moisture resistance, and shock tests. These costs are reflected in the final price .
2. Bill of Materials (BOM): Chipsets, optical components, and mechanical casings contribute significantly to cost .
3. Production and Yield: Labor, equipment, and manufacturing yield rates influence module pricing .
4. Vendor and Brand: OEM modules from Cisco, Juniper, or Arista are typically higher priced than third-party vendors like FS, Amphenol, or Cables on Demand .
5. Purchase Volume: Bulk orders often reduce per-unit cost, while small quantities may carry a premium .
6. Market Strategy: Discounts, promotions, or end-of-quarter pricing can affect module cost .

Vendor Examples

• FS.com: Offers 100G QSFP28 modules with 30-day free returns, prices generally in the $200–$500 range depending on type and reach .
• Cables on Demand: Provides Amphenol QSFP28 modules in SR and LR variants, with pricing aligned to short- and long-range specifications .
• Vitex LLC: Offers a pricing guide and explains cost factors for 100G QSFP28 modules, useful for budgeting and procurement planning .

Summary

For data center interconnection, the most common QSFP28 modules are SR4 for short-reach and LR4 or CWDM4 for longer links. Prices vary widely based on reach, optical technology, vendor, and purchase volume, typically ranging from $150 for SR4 modules to $600 for LR4 modules, with ZR4 modules reaching higher costs for extended distances . Selecting the right module requires balancing distance requirements, fiber type, and budget to ensure cost-effective deployment.