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GLC-LH-SMD – 1000BASE-LX/LH SFP module
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GLC-LH-SMD Description
Cisco GLC-LH-SMD is a 1000BASE-LX/LH Gigabit SFP transceiver operating at 1310 nm wavelength. It supports up to 10 km transmission over single-mode fiber and up to 550 m over multimode fiber (with a mode-conditioning patch cord on legacy MMF). With Digital Optical Monitoring (DOM) and extended temperature tolerance (-5°C to 85°C), it ensures reliable uplinks in enterprise, data center, and service provider networks. Also referred to as “1G LX SFP” or “Cisco 1310 nm SFP,” it provides a cost-effective and flexible solution for Gigabit Ethernet expansion across Cisco switches and routers.
Product Highlights
Data Rate
Maximum Reach
Power Consumption
Cabling Characteristics
- Product ID: GLC-LH-SMD
- Connector Type: LC (PC or UPC)
- Media: SMF
- Cable Type: Duplex Fiber
- Fiber Grade: G.652
- Core size: 9 µm
- Maximum reach: 10 km (SMF), 550 m (MMF with mode-conditioning cable)
- Standards: IEEE 1000BASE-LX/LH
- Notes: Can be used on MMF with maximum reach of 550 m
Optical Characteristics
- Product ID: GLC-LH-SMD
- Wavelength: 1310 nm
- Transmit Power: -9.5 to -3.0 dBm
- Receive Power: -20.0 to -3.0 dBm
- Max Channel Insertion Loss: N/A
- Notes: —
Physical and Operational Characteristics
- Product ID: GLC-LH-SMD
- Operating Temperature: -5°C to 85°C
- Storage Temperature: -40°C to 85°C
- DOM Support: Yes
- Power Consumption: 1 W
- Form Factor: SFP
- Dimensions: 8.5 × 13.4 × 56.5 mm
- Weight: 75 g or less
- Warranty: 5 years
- Notes: LC mode-conditioning cable required for MMF applications
Product Comparison
|
Parameter |
GLC-SX-MMD |
GLC-LH-SMD |
GLC-EX-SMD |
GLC-ZX-SMD |
|---|---|---|---|---|
|
Standard |
1000BASE-SX |
1000BASE-LX/LH |
1000BASE-EX |
1000BASE-ZX |
|
Wavelength |
850 nm |
1310 nm |
1310 nm |
1550 nm |
|
Fiber type |
MMF |
SMF/MMF |
SMF |
SMF |
|
Max reach |
550 m (MMF) |
10 km SMF / 550 m MMF |
40 km SMF |
70 km SMF |
|
Connector |
LC duplex |
LC duplex |
LC duplex |
LC duplex |
|
DOM |
Yes |
Yes |
Yes |
Yes |
|
Temperature |
EXT |
EXT |
EXT |
EXT |
|
Tx power |
-3 ~ -9.5 dBm |
-3 ~ -9.5 dBm |
+3 ~ -1 dBm |
+5 ~ 0 dBm |
|
Rx power |
0 ~ -17 dBm |
-3 ~ -20 dBm |
+1 ~ -22 dBm |
-3 ~ -23 dBm |
|
Max channel loss |
5 dB (OM3/OM4) |
2.4 dB MMF / 6 dB SMF |
18 dB |
21 dB |
|
Power consumption |
≤1 W |
≤1 W |
≤1 W |
≤1 W |
Transceiver Interoperability (GLC-LH-SMD)
|
Transceiver Product ID |
Transceiver/Standard |
Notes |
Interop Reach (up to) |
Breakout Patchcord Required |
|---|---|---|---|---|
|
GLC-LH-SMD |
GLC-GE-DR-LX |
— |
No FEC: 10 km |
No |
|
GLC-LH-SMD |
GLC-LH-SM |
— |
No FEC: 10 km |
No |
|
GLC-LH-SMD |
GLC-LH-SMD |
— |
No FEC: 10 km |
No |
|
GLC-LH-SMD |
GLC-LX-SM-RGD |
— |
No FEC: 10 km |
No |
|
GLC-LH-SMD |
SFP-1G-LH |
— |
No FEC: 10 km |
No |
|
GLC-LH-SMD |
SFP-GE-L |
— |
No FEC: 10 km |
No |
|
GLC-LH-SMD |
IEEE 1000BASE-LX/LH |
Standard compliance |
No FEC: 10 km |
No |
GLC-LH-SMD Device Compatibility Reference
Download GLC-LH-SMD Device Compatibility.pdf
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product ID | GLC-LH-SMD | Form Factor | SFP, hot-swappable |
| Data Rate | 1 Gbps | Standards | IEEE 1000BASE-LX/LH |
| Wavelength | 1310 nm | Connector Type | LC (PC or UPC) |
| Transmit Power | -9.5 to -3.0 dBm | Receive Power | -20.0 to -3.0 dBm |
| Maximum Reach (SMF) | 10 km | Maximum Reach (MMF) | 550 m with MCP |
| Fiber Grade | G.652 SMF | Core Size | 9 μm |
| Operating Temp | -5°C to 85°C | Storage Temp | -40°C to 85°C |
| DOM Support | Yes (SFF-8472) | Power Consumption | 1 W (typical) |
| Dimensions (H×W×D) | 8.5 × 13.4 × 56.5 mm | Weight | 75 g or less |
| Warranty | 5 years | Notes | Mode-conditioning cable required for MMF |
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Quality Certifications
Customer Reviews
Questions & Answers
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What is Cisco GLC-LH-SMD?
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GLC-LH-SMD vs GLC-SX-MMD—how to choose?
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Does it support DOM?
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Which fiber type is required?
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Any interoperability advice?
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Common use cases?
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Can it run over multimode?
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Monitoring tips?
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