
The OC-12/STM-4 compatible module serves equipment requiring a 1G SFP interface with 1550nm-TX/1310nm-RX optics and a 40km rating. Connection is through Simplex LC. Product data, application guidance and factory verification are presented together to support network teams verify host acceptance as well as physical interface fit.
OEM Part Number: OC-12/STM-4HT Part Number: SDH-SFP-OC12-BX40-D
| HT Part Number | SDH-SFP-OC12-BX40-D |
|---|---|
| Manufacturer | HT |
| Form Factor | SFP |
| Max Data Rate | 622Mbps |
| Wavelength | 1550nm-TX/1310nm-RX |
| Max Cable Distance | 40km |
| Connector | Simplex LC |
| Optical Components | DFB BiDi |
| Media | SMF |
| DOM Support | Yes |
| TX Power | -5~0dBm |
| Receiver Sensitivity | < -28dBm |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant |
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.
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.
The module is checked for host recognition as OC-12/STM-4, 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.
For this model, the specified transmit-power range is -5~0dBm; receiver sensitivity is < -28dBm. 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. 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.
Check three layers before deployment: host acceptance of the module identity, port support for the stated rate, and a matching optical standard at the remote interface. For breakout operation, confirm lane configuration too. Similar-looking cages can behave differently across speeds and firmware settings. For this model, the principal parameters are data rate 622Mbps, wavelength 1550nm-TX/1310nm-RX, rated reach 40km.
Use OC-12/STM-4 as the compatibility cross-reference and SDH-SFP-OC12-BX40-D 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.
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 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.
No. It is an HT-manufactured compatible alternative for equipment that specifies OC-12/STM-4, not an original NETGEAR-branded module.
Use Simplex LC with SMF. The specified maximum reach is 40km, 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.