Designed for 100G Ethernet, data center interconnect and 5G transport networks, the 100G QSFP28 ER4L 4x 25G NRZ QSFP-100G-ER4L-S 1310nm 40km Duplex LC/UPC Module, Cisco provides 103.125Gbps (4x 25.78Gbps) throughput in a QSFP28 form factor. It operates at 1310nm over SMF through a Duplex LC/UPC connector and supports link lengths up to 40km. The module meets QSFP28 MSA, SFF-8636, IEEE 802.3bm, CAUI-4 and includes digital diagnostic monitoring for live status readout.
Product Highlights
- QSFP28 form factor, 103.125Gbps (4x 25.78Gbps) data rate
- Wavelength: 1310nm
- Connector: Duplex LC/UPC
- Reach: up to 40km
- Fiber media: SMF
- DDM/DOM: Supported
Specifications
| Cisco Compatible | QSFP-100G-ER4L-S |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP28 |
| Max. Data Rate | 103.125Gbps (4x 25.78Gbps) |
| Wavelength | 1310nm |
| Max. Cable Distance | 40km |
| Connector | Duplex LC/UPC |
| Media | SMF |
| Transmitter Type | EML |
| Receiver Type | APD |
| TX Power | -2.5~6.5dBm |
| Minimum Receiver Power | -20.5dBm |
| Power Budget | 18dB |
| Receiver Overload | -3.5dBm |
| Max. Power Consumption | 4.5W |
| Extinction Ratio | >4dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 4x 25G-NRZ |
| Modulation (Optical) | 4x 25G-NRZ |
| CDR (Clock and Data Recovery) | TX & RX Built-in CDR |
| Packaging Technology | BOX Packaging |
| Bit Error Ratio (BER) | 1E-12 |
| MTBF | 16,084,928 Hours (@40°C, 60% CL) |
| Protocols | QSFP28 MSA, SFF-8636, IEEE 802.3bm, CAUI-4 |
Applications
In 100G Ethernet, data center interconnect and 5G transport networks, the 100G QSFP28 ER4L 4x 25G NRZ QSFP-100G-ER4L-S 1310nm 40km Duplex LC/UPC Module, Cisco delivers 103.125Gbps (4x 25.78Gbps) transmission over SMF with a reach of 40km. Digital diagnostics report transmit power, receive power and temperature in real time, which simplifies commissioning and ongoing maintenance. It is interoperable with Cisco platforms and replaces the Cisco part QSFP-100G-ER4L-S directly. The link runs 4x 25G-NRZ modulation, which keeps it aligned with current 100G switch silicon.
Standards and Compatibility
This product is designed and tested to comply with QSFP28 MSA, SFF-8636, IEEE 802.3bm, CAUI-4. It is interoperable with Cisco equipment and serves as a direct equivalent to the Cisco part number QSFP-100G-ER4L-S.
Ordering Information
To order, quote QSFP-ER4L-100G together with your quantity. Stock items ship quickly; for OEM orders we support custom labels, retail packing and vendor-specific coding, all handled in our own factory.
Packing Details
Standard packing is an anti-static bag plus blister protection, with cartons sized to keep products from moving in transit. We apply our standard labels by default; neutral packing or customer-branded labels, part number stickers and serial barcodes are all available on request.
OEM and Custom Orders
We have manufactured fiber optic connectivity products since 1995 and run our own production lines in Shenzhen. Beyond the standard catalog we build to order: special cable lengths, custom connector combinations, vendor-specific compatibility coding and private labeling. Send us your requirement and our engineers will quote a practical solution.
Shipping and Lead Time
Standard products are held in stock and usually ship within one to three working days. We dispatch worldwide by DHL, UPS, FedEx, TNT or EMS, and for bulk orders we arrange air or sea freight. Shipments can also be sent collect on your own courier account or delivered to your freight forwarder.
Tested Before Shipment
We do not ship untested stock. Each transceiver and cable is powered up in our test racks, checked for link stability, transmit power, receiver sensitivity and diagnostic readouts, and only then packed for delivery. This factory-level testing is one reason network integrators keep reordering from us year after year.