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GLC-ZX-SMD – 1000BASE-ZX SFP module
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GLC-ZX-SMD Description
Cisco GLC-ZX-SMD is a 1000BASE-ZX Gigabit Ethernet SFP transceiver optimized for ultra long-distance single-mode fiber connections. Operating at 1550 nm, it supports distances of up to approximately 70 km, subject to fiber quality, splice count, and overall optical loss budget.This hot-swappable module features an LC duplex connector and includes Digital Optical Monitoring (DOM) for real-time performance and diagnostics. With an extended operating temperature range (-5°C to 85°C), the GLC-ZX-SMD ensures reliable Gigabit Ethernet connectivity in service provider networks, enterprise backbones, and metropolitan area networks.For shorter links, inline optical attenuators are recommended to prevent receiver overload when optical loss is low. This makes the module highly versatile across varying deployment environments.
Product Highlights
Data Rate
Maximum Reach
Power Consumption
Cabling Characteristics
- 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: 70 km
- Standards: IEEE 1000BASE-ZX
Optical Characteristics
- Wavelength: 1550 nm
- Transmit Power: 0 to +5.0 dBm
- Receive Power: -23.0 to -3.0 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-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 |
220 m–1 km |
550 m MMF / 10 km SMF |
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 |
-1 to +3 dBm |
0 to +5 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 (SMF/MMF) |
18 dB (SMF) |
21 dB (SMF) |
|
Typical power |
≤1 W |
≤1 W |
≤1 W |
≤1 W |
Transceiver Interoperability (GLC-ZX-SMD)
|
Transceiver Product ID |
Transceiver/Standard |
Interop Reach (up to) |
Breakout Patchcord Required |
|---|---|---|---|
|
GLC-ZX-SMD |
GLC-ZX-SM |
No FEC: 70 km |
No |
|
GLC-ZX-SMD |
GLC-ZX-SM-RGD |
No FEC: 70 km |
No |
|
GLC-ZX-SMD |
GLC-ZX-SMD |
No FEC: 70 km |
No |
|
GLC-ZX-SMD |
SFP-GE-Z |
No FEC: 70 km |
No |
|
GLC-ZX-SMD |
IEEE 1000BASE-ZX |
No FEC: 70 km |
No |
GLC-ZX-SMD Device Compatibility Reference
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product ID | GLC-ZX-SMD | Form Factor | SFP, hot-swappable |
| Standard | 1000BASE-ZX | Data Rate | 1 Gbps |
| Wavelength | 1550 nm | Connector | LC duplex |
| Fiber Type | SMF (ITU-T G.652) | Max Reach | ~70 km |
| Tx Power | 0 to +5 dBm | Rx Sensitivity | -23 to -3 dBm |
| Max Channel Loss | 21 dB | 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 | Attenuator recommended 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 is Cisco GLC-ZX-SMD used for?
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How does GLC-ZX-SMD compare to GLC-EX-SMD?
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Does it require attenuation on short links?
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Which fiber type is recommended?
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Can it interoperate with third-party optics?
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Typical use cases?
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Any power considerations?
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How to monitor link health?
Warranty
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It changed… nothing. The network is stable. Good optic.
Long distance shot… target hit. Connection stable.
We rely on these for critical links. Authenticity confirmed.
80km reach verified. Clean signal. Using these for inter-city links.
Shipping to Brazil was smooth. Correct HS codes used.