Delivery Date Optical Module QSFP28

Delivery times for QSFP28 optical transceivers depend on the specific module type, vendor stock, and order volume, typically ranging from immediate availability to several weeks for specialized variants.QSFP28 OverviewQSFP28 (Quad Small Form-factor Pluggable 28) is a hot-pluggable 100G optical transceiver widely used in data centers, enterprise networks, and telecom infrastructure . It aggregates four 25G lanes to achieve 100 Gbps throughput, with the “28” indicating the maximum per-lane speed of 28 Gbps, providing overhead for error correction and clocking . QSFP28 modules are compatible with multiple optical technologies, including multimode VCSELs, single-mode DFB lasers, and PAM4 optics, depending on the variant .Common QSFP28 VariantsFR1/LR1: Supports 2 km and 10 km links over single-mode fiber using LC connectors, suitable for short- to medium-range data center interconnects .ZR4: Designed for ultra-long-reach applications up to 80 km, operating on LAN-WDM wavelengths near 1310 nm, ideal for metro networks and long-haul Ethernet .SR4/PSM4: Typically used for short-reach multimode fiber connections, often within racks or adjacent data center rooms .Factors Affecting DeliveryModule Type and Reach: Specialized modules like ZR4 or industrial-temperature variants may have longer lead times due to lower stock levels .Vendor and Stock Availability: Factory-direct suppliers like ATOP or Jabil maintain controlled production ecosystems, which can influence delivery predictability .Order Volume: Large-scale orders may require additional production cycles, affecting delivery schedules.Compatibility Requirements: Ensuring the QSFP28 module matches your switch or router platform may require vendor verification, which can add time before shipment.RecommendationsContact the vendor directly for the most accurate delivery date, as stock levels and lead times fluctuate.Specify the exact variant (FR1, LR1, ZR4, or industrial temperature) to avoid delays.Plan for potential lead times of 1–4 weeks for standard modules and longer for specialized or high-demand variants.Verify compatibility with your network hardware to prevent post-delivery issues. By considering these factors, you can better estimate the delivery schedule and ensure timely deployment of QSFP28 optical transceivers in your network infrastructure .