QSFP-4W20-100G-IGeneric QSFP-4W20-100G-I Compatible 100G QSFP28 4WDM-20 Transceiver Module
Built for hosts recognizing QSFP-4W20-100G-I, this HT-manufactured QSFP28 module delivers 100G transmission at 1310nm. Its rated reach is 20km, with Duplex LC as the physical interface. The specifications and engineering guidance below support high-density deployments balance optical performance, port access and thermal planning, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: QSFP-4W20-100G-IHT Part Number: QSFP-4W20-100G-I
Product Highlights
- Compatible alternative to Generic QSFP-4W20-100G-I
- 100G connectivity at 103.125Gbps (4x 25.78Gbps)
- Optical wavelength: 1310nm
- Specified reach: 20km
- Duplex LC / SMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: -40 to 85°C (-40 to 185°F)
Specifications
| HT Part Number | QSFP-4W20-100G-I |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP28 |
| Max Data Rate | 103.125Gbps (4x 25.78Gbps) |
| Wavelength | 1310nm |
| Max Cable Distance | 20km |
| Connector | Duplex LC |
| Media | SMF |
| Transmitter Type | EML |
| Receiver Type | PIN |
| TX Power | -4.3~4.5dBm |
| RX Power | -14.5~4.5dBm |
| Power Budget | 10.2db |
| Extinction Ratio | ＞4dB |
| Power Consumption | <4.5W |
| DDM/DOM | Supported |
| Modulation (Electrical) | 4x 25G-NRZ |
| Modulation (Optical) | 4x 25G-NRZ |
| Packaging Technology | COB (chip on board) Packaging |
| Industrial Temperature Range | -40 to 85°C (-40 to 185°F) |
| Protocols | QSFP28 MSA,IEEE 802.3-2018,4WDM-20,SFF-8661,SFF-8636 |
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.
The single-mode link budget should include fiber attenuation, connectors, splices and panels over the intended 20km route. Keep the Duplex LC interface clean and match the remote optical standard. Consider receiver overload as well as insufficient power on short links.
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.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -4.3~4.5dBm; the stated optical power budget is 10.2db. 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.
High-Density Port and Thermal Planning
In a densely populated chassis, connector access and airflow form part of the optical-link design. Confirm that neighboring modules and patch leads leave room for latch operation, and include listed power consumption in the host thermal budget. Assess port density together with fiber management. For this model, the principal parameters are data rate 103.125Gbps (4x 25.78Gbps), wavelength 1310nm, rated reach 20km.
Ordering Information
Use QSFP-4W20-100G-I as the compatibility cross-reference and QSFP-4W20-100G-I as the HT ordering identity. Keep other reaches or wavelength directions on separate order lines. Neutral labels, customer packaging and project-specific compatibility review are available on request.
Generic Compatibility and Factory Testing
Factory verification starts with the expected QSFP-4W20-100G-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 equipment manufacturer transceiver?
No. It is an HT-manufactured compatible transceiver supplied under our own manufacturer identity, not an original equipment manufacturer module.
Which fiber and connector are required?
Use Duplex LC with SMF. The specified maximum reach is 20km, 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.
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.
