How much does a pluggable optical module QSFP28 cost

QSFP28 optical modules typically range from $150 to over $2,000 depending on type, reach, and vendor.

Price Ranges by Module Type

• Short-Range (SR4) Modules: Designed for data center links up to 100 meters over multimode fiber, these modules are generally the most affordable, with prices typically around $150–$400 per unit (Cables on Demand, DigiKey) .
• Long-Range (LR1) Modules: Single-mode fiber modules supporting distances up to 10 km are moderately priced, usually $400–$800 per unit .
• Digital Coherent Optics / ZR Modules: High-performance coherent QSFP28 modules, such as Cisco 100G ZR, support metro and regional networks with distances up to 80–300 km. These modules are significantly more expensive, often $1,500–$2,500 or more per unit depending on vendor and features .

Factors Affecting Price

1. Transmission Distance: Longer reach modules (LR, ZR, coherent) cost more due to advanced optics and signal processing.
2. Technology Type: PAM4 QSFP28 modules are optimized for short-range, low-power applications and are cheaper, while coherent modules with wavelength tunability and extended reach are more expensive .
3. Vendor and Brand: Original equipment manufacturer (OEM) modules from Cisco, Finisar, or Huawei are priced higher than third-party or compatible modules from suppliers like Top-trans or Amphenol XGIGA .
4. Volume and Customization: Bulk orders or customized modules may reduce per-unit cost, while small quantities or specialized modules increase it.

Purchasing Tips

• Check vendor websites like DigiKey, Cables on Demand, or Alibaba for current stock and quotes .
• Confirm compatibility with your network equipment to avoid additional costs from returns or replacements.
• Consider warranty and support, especially for high-cost coherent modules, as these can impact total cost of ownership. In summary, QSFP28 module prices vary widely from around $150 for short-range data center modules to over $2,000 for long-reach coherent modules, with the final cost influenced by distance, technology, brand, and order volume.