The 1G SFP GLC-LH-SM-20 20km 1310nm Duplex LC/UPC Module, Cisco is a hot-pluggable SFP transceiver rated at 1.25Gbps. Using a Duplex LC/UPC optical interface over SMF at 1310nm, it covers transmission distances up to 20km. Compliance with SFF-8472 MSA Compliant, IEEE 802.3ah-2004, IEEE 802.3z, together with integrated diagnostic monitoring, makes it a dependable choice for enterprise access, campus, telecom edge and industrial network environments.
Product Highlights
- SFP form factor, 1.25Gbps data rate
- Wavelength: 1310nm
- Connector: Duplex LC/UPC
- Reach: up to 20km
- Fiber media: SMF
- DDM/DOM: Supported
Specifications
| Cisco Compatible | GLC-LH-SM-20 |
|---|---|
| Manufacturer | HT |
| Form Factor | SFP |
| Max. Data Rate | 1.25Gbps |
| Wavelength | 1310nm |
| Max. Cable Distance | 20km |
| Connector | Duplex LC/UPC |
| Media | SMF |
| Transmitter Type | FP 1310nm |
| Receiver Type | PIN |
| TX Power | -9.5~-3dBm |
| Minimum Receiver Power | < -23dBm |
| Power Budget | 13.5dB |
| Receiver Overload | -3dBm |
| Power Consumption | ≤1W |
| Extinction Ratio | >9dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | SFF-8472 MSA Compliant, IEEE 802.3ah-2004, IEEE 802.3z |
Applications
Network architects choose the 1G SFP GLC-LH-SM-20 20km 1310nm Duplex LC/UPC Module, Cisco for enterprise access, campus, telecom edge and industrial network environments: it runs 1.25Gbps over SMF and reaches 20km. With its Duplex LC/UPC optical interface, the module works directly with the SMF infrastructure already installed in most facilities. Compatibility with Cisco systems is verified in our own test lab before shipment, so the unit works out of the box as an equivalent of GLC-LH-SM-20.
Standards and Compatibility
Compliance: SFF-8472 MSA Compliant, IEEE 802.3ah-2004, IEEE 802.3z. For projects standardized on Cisco hardware, this product replaces the GLC-LH-SM-20 directly, with identical fit and function. Every unit's EEPROM coding and link behavior are verified on real host equipment in our lab, so what arrives at your site is ready to use.
Ordering Information
To order, quote SFP1G-ELX-31 together with your quantity. Stock items ship quickly; for OEM orders we support custom labels, retail packing and vendor-specific coding, all handled in our own factory.
Shipping and Lead Time
Standard products are held in stock and usually ship within one to three working days. We dispatch worldwide by DHL, UPS, FedEx, TNT or EMS, and for bulk orders we arrange air or sea freight. Shipments can also be sent collect on your own courier account or delivered to your freight forwarder.
Reliability Control
From incoming component inspection to final burn-in, quality is controlled at each step of production. Finished units are verified on real networking equipment in our compatibility lab, and test records are kept per batch so that any field question can be traced back quickly.
Packaging Options
Default packaging is simple and protective: sealed bag, blister tray, export carton. For OEM customers we also offer white-label packing, custom printed boxes and per-unit labeling with your own part numbers, so the goods can go straight into your sales channel.
Factory Custom Capability
Working directly with the manufacturer means no middleman limits. We support OEM and ODM projects, custom cable assemblies, alternative packaging and compatibility coding for major equipment vendors, with engineering support from the same team that designs our standard products.