QSFP-BX40-100GDell QSFP-BX40-100G Compatible 100G QSFP28 BX40-D Transceiver Module 40km 1309.14nm-TX/1304.58nm-RX
This Dell QSFP-BX40-100G compatible transceiver provides 100G connectivity in a hot-swappable QSFP28 package. Its optical design operates at 1309.14nm-TX/1304.58nm-RX for up to 40km, using Simplex LC/APC. Complete parameters and related OEM references help high-density deployments balance optical performance, port access and thermal planning.
OEM Part Number: QSFP-BX40-100GHT Part Number: QSFP-BX40-100G-I
Product Highlights
- Compatible alternative to Dell QSFP-BX40-100G
- 100G connectivity at 100Gbps
- Optical wavelength: 1309.14nm-TX/1304.58nm-RX
- Specified reach: 40km
- Simplex LC/APC / SMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: -40 to 85°C (-40 to 185°F)
Specifications
| HT Part Number | QSFP-BX40-100G-I |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP28 |
| Max. Data Rate | 100Gbps |
| Wavelength | 1309.14nm-TX/1304.58nm-RX |
| Max. Cable Distance | 40km |
| Connector | Simplex LC/APC |
| Media | SMF |
| Transmitter Type | EML |
| Receiver Type | APD |
| TX Power | 1.7~7.1dBm |
| Minimum Receiver Power | -13.8dBm |
| Power Budget | 15.5dB |
| Receiver Overload | -3.4dBm |
| Max. Power Consumption | ≤4.5W |
| Extinction Ratio | >5dB |
| DDM/DOM | Supported |
| Industrial Temperature Range | -40 to 85°C (-40 to 185°F) |
| Modulation (Electrical) | 4x 25G-NRZ |
| Modulation (Optical) | 1x 100G-PAM4 |
| Packaging Technology | BOX |
| CDR (Clock and Data Recovery) | No |
| Bit Error Ratio (BER) | 2E-4 |
| Inbuilt FEC | KP1 |
| Protocols | QSFP28 MSA, 100G Lambda MSA, SFF‑8636, IEEE 802.3bs, CAUI‑4 |
Applications and Optical Link Design
This BiDi interface is useful where only one fiber strand is available between two sites or racks. It must be paired with the complementary wavelength direction: one end transmits on the wavelength that the other end receives. Verify the paired part number, connector polish and fiber plant before installation, and measure link loss against the specified optical 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.
BiDi operation saves a fiber strand but makes wavelength orientation critical. Record the part installed at each end and check its paired receive wavelength. The 40km rating still depends on total channel loss, including connectors and splices.
Quality Assurance and Packaging
Each QSFP-BX40-100G 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.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is 1.7~7.1dBm; the stated optical power budget is 15.5dB. 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 100Gbps, wavelength 1309.14nm-TX/1304.58nm-RX, rated reach 40km.
Ordering Information
Use QSFP-BX40-100G as the compatibility cross-reference and QSFP-BX40-100G-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.
Dell Compatibility and Factory Testing
Factory verification starts with the expected QSFP-BX40-100G 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 Dell transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies QSFP-BX40-100G, not an original Dell-branded module.
Which fiber and connector are required?
Use Simplex LC/APC 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.
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.
