Cisco QSFP-100/112G-ER4 Compatible 100G QSFP28 ER4 Transceiver Module
Built for hosts recognizing QSFP-100/112G-ER4, this HT-manufactured QSFP28 module delivers 100G transmission at 1310nm. Its rated reach is 40km, with Duplex LC as the physical interface. The specifications and engineering guidance below support field technicians install, maintain and identify the exact compatible module, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: QSFP-100/112G-ER4HT Part Number: QSFP-ER4-100GM
Product Highlights
- Compatible alternative to Cisco QSFP-100/112G-ER4
- 100G connectivity at Dual Rate 103.1Gbps and 112Gbps
- Optical wavelength: 1310nm
- Specified reach: 40km
- Duplex LC / SMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| Cisco Compatible | QSFP-100/112G-ER4 |
|---|---|
| Manufacturer | HT |
| HT Part Number | QSFP-ER4-100GM |
| Form Factor | QSFP28 |
| Data Rate | Dual Rate 103.1Gbps and 112Gbps |
| Wavelength | 1310nm |
| Max Cable Distance | 40km |
| Connector | Duplex LC |
| Media | SMF |
| Transmitter Type | 4 x LAN WDM EML TOSA |
| Receiver Type | 4 x APD ROSA |
| TX Power | 100G: -2.5~2.9dBm 112G: -1~3.3dBm |
| Receiver Sensitivity | 100G: <-15dBm 112G: <-19dBm |
| Power Budget | 14dB |
| Receiver Overload | 100G: 2.9dBm112G: 3.3dBm |
| 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 |
| Packaging Technology | BOX Packaging |
| Transmit and Dispersion Penalty | 2.5dB 2.5dB |
| CDR (Clock and Data Recovery) | TX & RX Built-in CDR |
| Inbuilt FEC | No |
| Protocols | 100G Ethernet, 100G Telecom Connections |
Field Installation and Maintenance
Inspect the connector and patch lead before installation, then support the fiber without pulling on the module housing. Release the latch properly during maintenance and keep dust protection on unused interfaces. If a module is removed for later use, retain its part-number label and record its original port. For this model, the principal parameters are data rate Dual Rate 103.1Gbps and 112Gbps, wavelength 1310nm, rated reach 40km.
Applications and Optical Link Design
Use this module for equipment interconnection over the specified single-mode fiber plant, including enterprise backbone, campus, metro or data-center interconnect links according to its rated distance. Confirm that both ends use the same optical standard and wavelength plan, and allow for connector, splice and patch-panel loss within the stated power budget.
Before deployment, check the host port type, supported data rate and firmware requirements. The 100G interface configuration must match the remote equipment; sharing a QSFP28 housing alone does not make two transceiver types interoperable.
Before commissioning, measure the complete single-mode channel against the stated budget for 40km. Inspect every Duplex LC connection and record diagnostic power where supported. Both ends must agree on rate, wavelength and optical standard.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is 100G: -2.5~2.9dBm 112G: -1~3.3dBm; receiver sensitivity is 100G: <-15dBm 112G: <-19dBm; the stated optical power budget is 14dB. Digital diagnostics make later maintenance easier when baseline values are captured at installation. Save the initial readings with the port and OEM reference, then investigate meaningful changes rather than reacting to a single transient value. Diagnostic support depends on the host as well as the module, so unavailable fields should be confirmed with the platform documentation. Diagnostic monitoring is listed as Supported. Before every insertion, keep dust caps in place until the patch lead is ready, avoid touching the optical end face and use an appropriate inspection and cleaning procedure. Do not look into an active optical interface.
Quality Assurance and Packaging
Quality control covers the optical or electrical interface, host identification and operating link. The verified unit is then individually protected and cartoned. Customer references, rack groups and project packing lists can be added for volume orders.
Cisco Compatibility and Factory Testing
Factory verification starts with the expected QSFP-100/112G-ER4 identity and finishes with an operating host link. EEPROM data, diagnostic visibility and the stated optical parameters are assessed together. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
Frequently Asked Questions
Is this an original Cisco transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies QSFP-100/112G-ER4, not an original Cisco-branded module.
Which fiber and connector are required?
Use Duplex LC with SMF. The specified maximum reach is 40km, subject to fiber quality and total link loss.
Can it be mixed with another wavelength or reach version?
Only when the two ends share the same optical standard, wavelength plan and supported data rate. Check the exact part numbers and link budget rather than relying only on the module form factor.
Ordering Information
When ordering, specify QSFP-100/112G-ER4, QSFP-ER4-100GM, quantity and intended host platform. Project labels can repeat these details for receiving and asset records. Neutral labels, customer packaging and project-specific compatibility review are available on request.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are accepted.
