Juniper Networks EX-SFP-1GE-SX Compatible 1G SFP Transceiver Module
This Juniper Networks EX-SFP-1GE-SX compatible transceiver provides 1G connectivity in a hot-swappable SFP package. Its optical design operates at 850nm for up to 550m on 50 / 125µm OM2 MMF275m on 62.5 / 125µm OM1 MMF220m on 62.5 / 125µm FDDI MMF, using Duplex LC. Complete parameters and related OEM references help project teams keep OEM references, delivery records and port schedules aligned.
OEM Part Number: EX-SFP-1GE-SXHT Part Number: EX-SFP-1GE-SX
Product Highlights
- Compatible alternative to Juniper Networks EX-SFP-1GE-SX
- 1G connectivity at 1.25Gbps
- Optical wavelength: 850nm
- Specified reach: 550m on 50 / 125µm OM2 MMF275m on 62.5 / 125µm OM1 MMF220m on 62.5 / 125µm FDDI MMF
- Duplex LC / MMF interface
- Digital diagnostic monitoring: Supported
- Factory compatibility verification and optical performance testing before shipment
Specifications
| Juniper Networks Compatible | EX-SFP-1GE-SX |
|---|---|
| Manufacturer | HT |
| HT Part Number | EX-SFP-1GE-SX |
| Form Factor | SFP |
| Max. Data Rate | 1.25Gbps |
| Wavelength | 850nm |
| Max. Cable Distance | 550m@50/125µm OM2 MMF275m@62.5/125µm OM1 MMF220m@62.5/125µm FDDI MMF |
| Connector | Duplex LC |
| Media | MMF |
| Transmitter Type | VCSEL |
| Receiver Type | PIN |
| DDM/DOM | Supported |
| Operating Temperature Range | 0 to 70°C (23 to 158°F) |
| TX Power | -9.5~-3dBm |
| Receiver Sensitivity | < -17dBm |
| Typical Power Consumption | ≤0.8W |
| Receiver Overload | -3dBm |
| Bit Error Ratio (BER) | 1E-12 |
| Extinction Ratio | >9dB |
| EMC (Electro Magnetic Compatibility) | Supported |
| MTBF (SX) | 2,457,002 Hours |
| Protocols | IEEE 802.3z, SFF-8472, SFP MSA (INF-8074i) 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 850nm, rated reach 550m on 50 / 125µm OM2 MMF275m on 62.5 / 125µm OM1 MMF220m on 62.5 / 125µm FDDI MMF.
Juniper Networks Compatibility and Factory Testing
Factory verification starts with the expected EX-SFP-1GE-SX 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
Typical deployments include switch-to-switch, switch-to-server and aggregation links inside a data hall or between adjacent equipment rooms. The Duplex LC 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 1G interface configuration must match the remote equipment; sharing a SFP housing alone does not make two transceiver types interoperable.
The multimode channel should use the fiber grade associated with the stated 550m on 50 / 125µm OM2 MMF275m on 62.5 / 125µm OM1 MMF220m on 62.5 / 125µm FDDI MMF reach. Keep the Duplex LC end faces clean and avoid tight bends. Different multimode standards are not interchangeable merely because they share a connector.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -9.5~-3dBm; receiver sensitivity is < -17dBm. 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.
Frequently Asked Questions
Is this an original Juniper Networks transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies EX-SFP-1GE-SX, not an original Juniper Networks-branded module.
Which fiber and connector are required?
Use Duplex LC with MMF. The specified maximum reach is 550m on 50 / 125µm OM2 MMF275m on 62.5 / 125µm OM1 MMF220m on 62.5 / 125µm FDDI MMF, 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 EX-SFP-1GE-SX as the compatibility cross-reference and EX-SFP-1GE-SX 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 EX-SFP-1GE-SX 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.
