D-Link DEM-330R Compatible 1G SFP Transceiver Module
The DEM-330R compatible module serves equipment requiring a 1G SFP interface with 1310nm-TX/1550nm-RX optics and a 10km rating. Connection is through Simplex LC. Product data, application guidance and factory verification are presented together to support project teams keep OEM references, delivery records and port schedules aligned.
OEM Part Number: DEM-330RHT Part Number: SFP-1G35-BX10
Product Highlights
- Compatible alternative to D-Link DEM-330R
- 1G connectivity at 1.25Gbps
- Optical wavelength: 1310nm-TX/1550nm-RX
- Specified reach: 10km
- Simplex LC / SMF interface
- Operating temperature: 0 to 70°C (32 to 158°F)
- Factory compatibility verification and optical performance testing before shipment
Specifications
| D-Link Compatible | DEM-330R |
|---|---|
| Manufacturer | HT |
| HT Part Number | SFP-1G35-BX10 |
| Form Factor | SFP |
| Max. Data Rate | 1.25Gbps |
| Wavelength | 1310nm-TX/1550nm-RX |
| Max Cable Distance | 10km |
| Connector | Simplex LC |
| Optical Components | FP BiDi |
| Media | SMF |
| DOM Support | Yes |
| TX Power | -9~-3dBm |
| Receiver Sensitivity | < -23dBm |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant |
Project Documentation and Traceability
Large deployments are easier to audit when the order code, optical standard and endpoint record agree. Keep the OEM reference in the compatibility document and the HT part number on the packing list. Labels and carton groups can be arranged by rack or port plan so installers need not identify modules by appearance. For this model, the principal parameters are data rate 1.25Gbps, wavelength 1310nm-TX/1550nm-RX, rated reach 10km.
D-Link Compatibility and Factory Testing
Factory verification starts with the expected DEM-330R 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.
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.
Before deployment, check the host port type, supported data rate and firmware requirements. The 1G interface configuration must match the remote equipment; sharing a SFP housing alone does not make two transceiver types interoperable.
This single-fiber interface must be paired with the complementary wavelength direction. One end transmits on the wavelength the other receives. Verify connector polish and measure loss over the 10km design range before service.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -9~-3dBm; receiver sensitivity is < -23dBm. 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. 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.
Frequently Asked Questions
Is this an original D-Link transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies DEM-330R, not an original D-Link-branded module.
Which fiber and connector are required?
Use Simplex LC with SMF. The specified maximum reach is 10km, 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 DEM-330R as the compatibility cross-reference and SFP-1G35-BX10 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.
Quality Assurance and Packaging
Each DEM-330R 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.
