DS-SFP-FC16G-LW – 16G FC Longwave SFP+ – LC SMF – 10km Reach
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DS-SFP-FC16G-LW Description
DS-SFP-FC16G-LW is a Cisco MDS 9000 Series 16-Gbps Fibre Channel longwave SFP+ transceiver for LC single-mode fiber SAN links. It is used to match 4/8/16-Gbps Fibre Channel ports in Cisco MDS storage-networking deployments where an optical interconnect must reach up to 10 km over OS2-compliant single-mode fiber. Cisco-listed identity facts for this SKU include the SFP+ form factor, LC connector, 1310 nm wavelength, 9.0-micron single-mode fiber support, 4/8/16-Gbps autosensing Fibre Channel rates, a 2 m minimum cable distance, and 0 to 70 degrees C operating temperature.
Quick Specs
|
Parameter |
Specification |
|---|---|
|
Product ID |
DS-SFP-FC16G-LW |
|
Product type |
16-Gbps Fibre Channel longwave SFP+ transceiver |
|
Connector type |
LC |
|
Fiber type |
Single-mode fiber |
|
Core size |
9.0 microns |
|
Wavelength |
1310 nm |
|
Fibre Channel rates |
4/8/16-Gbps autosensing |
|
Maximum reach |
10 km |
|
Minimum cable distance |
2 m |
|
Compatible platform family |
Cisco MDS 9000 Series |
|
Operating temperature |
0 to 70 degrees C |
Application Scenarios
DS-SFP-FC16G-LW fits Cisco MDS 9000 Series Fibre Channel ports when the link must run on LC single-mode fiber and remain within Cisco’s 10 km longwave distance.
Use the exact DS-SFP-FC16G-LW line item when a maintenance order is replacing a 16G longwave optic. DS-SFP-FC16G-SW uses shortwave multimode fiber, while DS-SFP-FC16GELW is the extended longwave alternative for 25 km reach.
This optic is relevant to MDS switches and modules listed in Cisco’s MDS transceiver support matrix, including 16G-capable MDS 9000 platforms. Confirm the exact chassis, module, and release train before reserving the part.
Product Comparison
|
Parameter |
DS-SFP-FC16G-LW |
DS-SFP-FC16GELW | |
|---|---|---|---|
|
Product type |
16G Fibre Channel longwave SFP+ |
16G Fibre Channel shortwave SFP+ |
16G Fibre Channel extended longwave SFP+ |
|
Connector type |
LC |
LC |
LC |
|
Fiber type |
Single-mode fiber |
Multimode fiber |
Single-mode fiber |
|
Wavelength |
1310 nm |
850 nm |
1310 nm |
|
Core size |
9.0 microns |
50.0 or 62.5 microns |
9.0 microns |
|
Fibre Channel rates |
4/8/16-Gbps autosensing |
4/8/16-Gbps autosensing |
4/8/16-Gbps autosensing |
|
Maximum documented reach |
10 km |
Up to 125 m at 16 Gbps depending on multimode fiber grade |
25 km |
|
Minimum cable distance |
2 m |
2 m |
2 m |
|
Average transmit power |
-5.0 to 2.0 dBm |
-7.8 to -1.3 dBm |
-2.0 to 5.0 dBm |
|
Average receive power |
-12.0 to 2.0 dBm |
-10.3 to 0 dBm |
-14.0 to 2.0 dBm |
- In a DS-SFP-FC16G-LW vs DS-SFP-FC16G-SW comparison, the main difference is fiber media: LW uses 1310 nm single-mode fiber for 10 km reach, while SW uses 850 nm multimode fiber for shorter 16G runs.
- The DS-SFP-FC16G-LW difference from DS-SFP-FC16GELW is reach. DS-SFP-FC16GELW is documented for 25 km, while DS-SFP-FC16G-LW is documented for 10 km.
- For buyers comparing which model to choose, keep DS-SFP-FC16G-LW on orders that require standard longwave LC SMF 16G Fibre Channel optics rather than shortwave MMF or extended longwave 25 km optics.
Selection Guide
1. Match the fiber plant first
Choose DS-SFP-FC16G-LW when the SAN link uses LC single-mode fiber and the measured route fits the documented 10 km longwave reach.
2. Do not substitute SW optics for an SMF path
DS-SFP-FC16G-SW is a shortwave multimode optic. It should only replace DS-SFP-FC16G-LW if the cabling design changes from single-mode fiber to a Cisco-supported multimode shortwave path.
3. Use ELW only for the longer longwave requirement
DS-SFP-FC16GELW is the adjacent extended longwave part. Select it only when the Cisco-supported design requires the documented 25 km reach rather than the 10 km LW distance.
4. Verify MDS support before ordering
Check the Cisco MDS 9000 Series transceiver support matrix for the exact switch, line card, and release train before adding DS-SFP-FC16G-LW to the final purchase list.
Ordering Checklist
|
Check Item |
What to Confirm |
Why It Matters |
|---|---|---|
|
Exact Product ID |
DS-SFP-FC16G-LW |
Prevents substitution with SW or ELW Fibre Channel optics |
|
Host platform |
Supported Cisco MDS switch or line card |
Confirms the optic belongs in the intended SAN device |
|
Software release |
NX-OS release support in Cisco’s MDS compatibility matrix |
Avoids ordering an optic outside the supported release train |
|
Fiber media |
LC single-mode fiber with 9.0-micron core |
LW is not a multimode shortwave optic |
|
Optical distance |
2 m minimum and 10 km maximum |
Keeps the link inside Cisco’s documented cable-distance range |
|
Far-end optic |
Matching 16G Fibre Channel longwave endpoint |
Prevents wavelength and media mismatch during installation |
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product ID | DS-SFP-FC16G-LW | Product type | 16-Gbps Fibre Channel longwave SFP+ transceiver |
| Ordering description | 16 Gbps Fibre Channel LW SFP+, LC | Spare ordering description | 16 Gbps Fibre Channel LW SFP+, LC, spare |
| Form factor | SFP+ | Connector type | LC |
| Compatible platform family | Cisco MDS 9000 Series | Fibre Channel connectivity | 4/8/16-Gbps ports |
| Fiber type | Single-mode fiber | Core size | 9.0 microns |
| Wavelength | 1310 nm | Fibre Channel rates | 4/8/16-Gbps autosensing |
| Baud rates | 14.025, 8.5, and 4.25 GBd | Maximum cable distance | 10 km |
| Minimum cable distance | 2 m | SMF requirement | ISO/IEC 11801 OS2 compliant single-mode fiber |
| Average transmit power | -5.0 to 2.0 dBm | Average receive power | -12.0 to 2.0 dBm |
| Fiber-loss budget | 7.8 dB at 4 Gbps; 6.4 dB at 8 and 16 Gbps | Module dimensions | 8.5 x 13.55 x 56.5 mm |
| Operating temperature | 0 to 70 degrees C | Storage temperature | -40 to 85 degrees C |
| Laser class | Class I 21CFR1040 | Supported releases in MDS 8.x matrix | 8.1(x), 8.2(x), 8.3(x), 8.4(x), and 8.5(x) |
Get More Information
Need pricing, stock, or shipping details for the DS-SFP-FC16G-LW ? Layer23-Switch can help you check current availability, lead time, and delivery options for this. Send us the part number, quantity, and destination country via live chat or email sales@layer23-switch.com for a fast quotation.
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Customer Reviews
Questions & Answers
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What is DS-SFP-FC16G-LW?
-
How is DS-SFP-FC16G-LW different from DS-SFP-FC16G-SW?
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Which fiber type works with DS-SFP-FC16G-LW?
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Can DS-SFP-FC16G-LW operate in older SANs?
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When is DS-SFP-FC16G-LW selected?
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What issue appears with DS-SFP-FC16G-LW on dirty panels?
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Is DS-SFP-FC16G-LW an Ethernet module?
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What spare policy fits DS-SFP-FC16G-LW?
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