Arista 100GBASE-SWDM4 Compatible 100G QSFP28 SWDM4 Transceiver Module
The 100GBASE-SWDM4 compatible module serves equipment requiring a 100G QSFP28 interface with 850/880/910/940nm optics and a 75m on OM3 / 100m on OM4 / 150m on OM5 rating. Connection is through Duplex LC/UPC. Product data, application guidance and factory verification are presented together to support field technicians install, maintain and identify the exact compatible module.
OEM Part Number: 100GBASE-SWDM4HT Part Number: QSFP-BIDI-100G
Product Highlights
- Compatible alternative to Arista 100GBASE-SWDM4
- 100G connectivity at 103.1Gbps
- Optical wavelength: 850/880/910/940nm
- Specified reach: 75m on OM3 / 100m on OM4 / 150m on OM5
- Duplex LC/UPC / MMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| Arista Compatible | 100GBASE-SWDM4 |
|---|---|
| Manufacturer | HT |
| HT Part Number | QSFP-BIDI-100G |
| Form Factor | QSFP28 |
| Max. Data Rate | 103.1Gbps |
| Wavelength | 850/880/910/940nm |
| Max. Cable Distance | 75m@OM3/100m@OM4/150m@OM5 |
| Connector | Duplex LC/UPC |
| Media | MMF |
| Transmitter Type | VCSEL |
| Receiver Type | PIN |
| TX Power | 5.5~3dBm |
| Minimum Receiver Power | -9.5dBm |
| Power Budget | 4dB |
| Receiver Overload | 3.4dBm |
| Max. Power Consumption | 3.5W |
| Extinction Ratio | >2dB |
| 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 | COB Packaging |
| Bit Error Ratio (BER) | 5E-5 |
| MTBF | 11,100,000 Hours (@40°C, 60% CL) |
| Protocols | QSFP28 MSA, SFF-8636, IEEE 802.3bm, CAUI-4 |
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 850/880/910/940nm, rated reach 75m on OM3 / 100m on OM4 / 150m on OM5.
Applications and Optical Link Design
Typical deployments include switch-to-switch, switch-to-server and aggregation links inside a data hall or between adjacent equipment rooms. The Duplex LC/UPC interface connects to the specified multimode cabling, and the stated reach depends on fiber grade and link loss. Keep this interface on the matching multimode optical standard rather than connecting it directly to a single-mode wavelength or reach variant.
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.
For this multimode module, confirm fiber grade, modal bandwidth and total loss before commissioning. The 75m on OM3 / 100m on OM4 / 150m on OM5 figure applies only under suitable cabling conditions. Inspect every Duplex LC/UPC mating point and match the remote optical standard.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is 5.5~3dBm; the stated optical power budget is 4dB. During commissioning, record the host diagnostic readings after the link has stabilized and compare them with those limits. DOM values are useful operational indicators, but they do not replace calibrated optical measurements when a link is marginal. Investigate unexpected loss through connector inspection, cleaning and a channel measurement before replacing the module. 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
Before packing, the module receives interface inspection, identification and link checks. Protective packaging avoids pressure on the connector and latch. Customer references, rack groups and project packing lists can be added for volume orders.
Arista Compatibility and Factory Testing
The module is checked for host recognition as 100GBASE-SWDM4, link establishment and diagnostic reporting. Physical cage fit alone is not treated as evidence of compatibility. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
Frequently Asked Questions
Is this an original Arista transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies 100GBASE-SWDM4, not an original Arista-branded module.
Which fiber and connector are required?
Use Duplex LC/UPC with MMF. The specified maximum reach is 75m on OM3 / 100m on OM4 / 150m on OM5, 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
Use 100GBASE-SWDM4 as the compatibility cross-reference and QSFP-BIDI-100G 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.
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.
