Cisco QSFP-CWDM4-100G-I Compatible 100G QSFP28 CWDM4 Transceiver Module
This Cisco QSFP-CWDM4-100G-I compatible transceiver provides 100G connectivity in a hot-swappable QSFP28 package. Its optical design operates at 1310nm for up to 2km, using Duplex LC. Complete parameters and related OEM references help field technicians install, maintain and identify the exact compatible module.
OEM Part Number: QSFP-CWDM4-100G-IHT Part Number: QSFP-CWDM4-100G-I
Product Highlights
- Compatible alternative to Cisco QSFP-CWDM4-100G-I
- 100G connectivity at 103.1Gbps
- Optical wavelength: 1310nm
- Specified reach: 2km
- Duplex LC / SMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: -40 to 85°C (-40 to 185°F)
Specifications
| HT Part Number | QSFP-CWDM4-100G-I |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP28 |
| Max Data Rate | 103.1Gbps |
| Wavelength | 1310nm |
| Max Cable Distance | 2km |
| Connector | Duplex LC |
| Media | SMF |
| Transmitter Type | DFB |
| Receiver Type | PIN |
| TX Power | -2.5~6.5dBm |
| RX Power | -11.5~3.5dBm |
| Power Budget | 9dB |
| Extinction Ratio | ＞3.5dB |
| Power Consumption | ＜4.5W |
| DDM/DOM | Supported |
| Modulation (Electrical) | 4x 25G-NRZ |
| Modulation (Optical) | 4x 25G-NRZ |
| Packaging Technology | COB Packaging |
| Industrial Temperature Range | -40 to 85°C (-40 to 185°F) |
| Protocols | QSFP28 MSA, CWDM4 MSA, IEEE802.3bm, SFF-8636 |
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 103.1Gbps, wavelength 1310nm, rated reach 2km.
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.
The industrial temperature rating makes this version appropriate for controlled outdoor cabinets, transport nodes and other installations exposed to wider ambient temperature variation. Adequate airflow, protected cable routing and host-platform temperature limits still apply.
For this 1310nm interface, verify channel spacing and filter compatibility. Passive filters add loss even without active equipment, so assess 2km using the complete channel rather than fiber distance alone.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -2.5~6.5dBm; the stated optical power budget is 9dB. A sound acceptance record includes link state, diagnostic temperature, supply voltage and transmit or receive levels where the host exposes them. Compare the readings with the stated ranges rather than treating any received light as proof of adequate margin. Persistent alarms or borderline values should trigger an end-face and complete-channel inspection. 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
Each QSFP-CWDM4-100G-I compatible module is inspected, powered up and functionally checked before protective packing. Dust caps and individual trays shield the interface during transport. 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-CWDM4-100G-I 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-CWDM4-100G-I, not an original Cisco-branded module.
Which fiber and connector are required?
Use Duplex LC with SMF. The specified maximum reach is 2km, 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-CWDM4-100G-I, QSFP-CWDM4-100G-I, 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.
