
The C20 compatible module serves equipment requiring a 25G SFP28 interface with 1561.42nm optics and a 10km rating. Connection is through Duplex LC. Product data, application guidance and factory verification are presented together to support installers plan a serviceable optical connection at the equipment rack.
OEM Part Number: C20HT Part Number: DW-SFP25G10-20-I
| HT Part Number | DW-SFP25G10-20-I |
|---|---|
| Manufacturer | HT |
| Form Factor | SFP28 |
| Max Data Rate | 25.78Gbps |
| Wavelength | 1561.42nm |
| Max Cable Distance | 10km |
| Connector | Duplex LC |
| Media | SMF |
| Transmitter Type | EML |
| Receiver Type | APD |
| TX Power | 0~5dBm |
| Receiver Sensitivity | <-14dBm |
| Power Budget | 14dB |
| Receiver Overload | -5dBm |
| Power Consumption | ≤2W |
| Extinction Ratio | >6dB |
| DDM/DOM | Supported |
| Industrial Temperature Range | -40 to 85°C (-40 to 185°F) |
| CDR (Clock and Data Recovery) | TX and RX |
| FEC Function | Not Supported |
| Protocols | SFF-8431, SFF-8472, RoHS |
Plan the fiber route before removing connector protection. The patch lead should follow its manager without pulling on the transceiver, while leaving space to release the latch and service adjacent ports. Protect the end face until final connection and avoid tight bends immediately behind warm exhaust air. For this model, the principal parameters are data rate 25.78Gbps, wavelength 1561.42nm, rated reach 10km.
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 1561.42nm interface, verify channel spacing and filter compatibility. Passive filters add loss even without active equipment, so assess 10km using the complete channel rather than fiber distance alone.
For this model, the specified transmit-power range is 0~5dBm; receiver sensitivity is <-14dBm; the stated optical power budget is 14dB. Digital diagnostics make later maintenance easier when baseline values are captured at installation. Save the initial readings with the port and OEM reference, then investigate meaningful changes rather than reacting to a single transient value. Diagnostic support depends on the host as well as the module, so unavailable fields should be confirmed with the platform documentation. 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.
Each C20 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.
Compatibility testing for C20 combines identification with a live link and available transmit, receive and alarm information. Connector condition is inspected separately. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
No. It is an HT-manufactured compatible alternative for equipment that specifies C20, not an original Ericsson-branded module.
Use Duplex LC with SMF. The specified maximum reach is 10km, subject to fiber quality and total link loss.
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.
When ordering, specify C20, DW-SFP25G10-20-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.
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.
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