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GLC-EX-SMD – 1000BASE-EX SFP module
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GLC-EX-SMD Description
Cisco GLC-EX-SMD is a 1000BASE-EX Gigabit Ethernet SFP transceiver designed for long-distance single-mode fiber applications. Operating at 1310 nm, it supports transmission distances of up to 40 km on G.652 SMF. This module is hot-swappable, features a duplex LC connector, and includes Digital Optical Monitoring (DOM) for real-time link performance diagnostics.
With its extended temperature rating (-5°C to 85°C), the GLC-EX-SMD provides reliable operation in demanding environments such as metropolitan networks, campus backbones, and long-range enterprise access links. For deployments requiring shorter spans, inline optical attenuators may be used to prevent receiver overload.
Product Highlights
Data Rate
Maximum Reach
Power Consumption
Cabling Characteristics
- Product ID: GLC-EX-SMD
- Connector Type: LC (PC or UPC)
- Media: SMF (Single-Mode Fiber)
- Cable Type: Duplex Fiber
- Fiber Grade: G.652
- Core Size: 9 µm
- Modal Bandwidth: N/A
- Maximum Reach: 40 km
- Standards: IEEE 1000BASE-EX
Optical Characteristics
- Product ID: GLC-EX-SMD
- Wavelength: 1310 nm
- Transmit Power: -1.0 to +3.0 dBm
- Receive Power: -22.0 to +1.0 dBm
- Max. Channel Insertion Loss: —
Physical and Operational Characteristics
- Operating Temperature: -5°C to 85°C (EXT)
- Storage Temperature: -40°C to 85°C
- DOM Support: Yes
- Power Consumption: 1 W
- Form Factor: SFP
- Dimensions (H × W × D): 8.5 × 13.4 × 56.5 mm
- Weight: 75 g or less
- Warranty: 5 years
Product Comparison
|
Parameter |
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 only |
SMF/MMF |
SMF |
SMF |
|
Max reach |
up to 1 km |
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 |
|
Temp range |
EXT (-5–85°C) |
EXT (-5–85°C) |
EXT (-5–85°C) |
EXT (-5–85°C) |
|
Tx power |
-9.5 to -3 dBm |
-9.5 to -3 dBm |
+3 to -1 dBm |
+5 to 0 dBm |
|
Rx sensitivity |
-17 to 0 dBm |
-20 to -3 dBm |
-22 to +1 dBm |
-23 to -3 dBm |
|
Channel loss |
2.4–5 dB (MMF) |
2.4–6 dB |
18 dB |
21 dB |
|
Typical power |
≤1 W |
≤1 W |
≤1 W |
≤1 W |
Transceiver Interoperability (GLC-EX-SMD)
|
Transceiver Product ID |
Transceiver/Standard |
Interop Reach (up to) |
Breakout Patchcord Required |
|---|---|---|---|
|
GLC-EX-SMD |
GLC-EX-SMD |
No FEC: 40 km |
No |
|
GLC-EX-SMD |
IEEE 1000BASE-EX |
No FEC: 40 km |
No |
GLC-EX-SMD Device Compatibility Reference
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product ID | GLC-EX-SMD | Form Factor | SFP, hot-swappable |
| Standard | 1000BASE-EX | Data Rate | 1 Gbps |
| Wavelength | 1310 nm | Connector | LC duplex |
| Fiber Type | SMF (ITU-T G.652) | Max Reach | 40 km |
| Tx Power | +3 to -1 dBm | Rx Sensitivity | +1 to -22 dBm |
| Max Channel Loss | 18 dB (SMF) | DOM Support | Yes |
| Operating Temp | -5°C to 85°C | Storage Temp | -40°C to 85°C |
| Power Consumption | ≤1 W | Warranty | 5 years |
| Dimensions | 8.5 × 13.4 × 56.5 mm | Weight | 75 g or less |
| Notes | Inline optical attenuator may be required for short links | Platform Support | Catalyst, Nexus, ISR, ASR, etc. |
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Quality Certifications
Customer Reviews
Questions & Answers
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What does Cisco GLC-EX-SMD provide?
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How does GLC-EX-SMD compare to GLC-ZX-SMD?
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Is an attenuator needed on short links?
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What fiber type is used?
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Typical use cases?
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Does it support DOM?
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Any interoperability notes?
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How to maintain link quality?
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It brings hope… having a working connection. Delivered safely.
Credits will do fine. Good part, I give you good price? You gave me good price.
Needed that extra reach (40km) where LH wouldn’t work. These are solid.
Hard to find genuine EX sometimes. Good supplier.