DS-SFP-FC32G-LW – 32G FC Longwave SFP+ – LC SMF – 10km Reach
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DS-SFP-FC32G-LW Description
DS-SFP-FC32G-LW is a Cisco MDS 9000 Series 32-Gbps Fibre Channel longwave SFP+ transceiver for SAN optical links that need 10 km reach over single-mode fiber. It uses a dual LC connector, 1310 nm wavelength optics, and 8/16/32-Gbps autosensing Fibre Channel operation, making it suited for matching 32G MDS switch ports while preserving compatibility with Cisco MDS deployments that still use 8G or 16G Fibre Channel links. The module is specified for 9.0-micron SMF, 0 to 70 degrees C operation, and MDS 9000 Series platform environments where a longwave SFP+ optic is required instead of a short-reach multimode transceiver.
Quick Specs
|
Parameter |
Specification |
|---|---|
|
Product ID |
DS-SFP-FC32G-LW |
|
Product type |
32-Gbps Fibre Channel longwave SFP+ transceiver |
|
Ordering description |
32 Gbps Fibre Channel LW SFP+, LC |
|
Connector type |
Dual LC |
|
Fiber type |
Single-mode fiber |
|
Core size |
9.0 microns |
|
Wavelength |
1310 nm |
|
Fibre Channel rates |
8/16/32-Gbps autosensing |
|
Maximum reach |
10 km |
|
Compatible platform family |
Cisco MDS 9000 Series |
|
Operating temperature |
0 to 70 degrees C |
Application Scenarios
DS-SFP-FC32G-LW fits Cisco MDS Fibre Channel ports when the SAN design needs 32G-capable LC single-mode fiber optics and the optical span remains within Cisco’s documented 10 km longwave distance.
Use the exact DS-SFP-FC32G-LW line item when an existing MDS link is built around 1310 nm longwave SMF optics. DS-SFP-FC32G-SW maps to shortwave multimode fiber, while DS-SFP-FC32G-ELW is the extended longwave alternative for 25 km reach.
Cisco’s MDS compatibility matrices list DS-SFP-FC32G-LW under 32-Gbps Fibre Channel longwave LC SFP+ optics for specific MDS switches and modules. The receiving switch, module, and release train should match the Cisco matrix before the optic is ordered.
Product Comparison
|
Parameter |
DS-SFP-FC32G-LW |
DS-SFP-FC32G-ELW | |
|---|---|---|---|
|
Product type |
32G Fibre Channel longwave SFP+ |
32G Fibre Channel shortwave SFP+ |
32G Fibre Channel extended longwave SFP+ |
|
Connector type |
Dual LC |
Dual LC |
Dual 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 microns for OM2/OM3/OM4/OM5 |
9.0 microns |
|
Cabling table speed values |
28.05 / 14.025 / 8.5 Gbps |
28.05 / 14.025 / 8.5 Gbps |
28.05 / 14.025 / 8.5 Gbps |
|
Maximum documented 32G reach |
10 km |
100 m on OM4/OM5 MMF |
25 km |
|
Average transmit power |
-5.0 to 2.0 dBm |
-6.2 to 2.0 dBm |
-4.7 to 7 dBm |
|
Average receive power |
-11.4 to 2.0 dBm |
-8.2 to 2.0 dBm |
-15.8 to 4.5 dBm |
|
MDS 9.x support columns |
9.2(x), 9.3(x), and 9.4(x) on listed products |
9.2(x), 9.3(x), and 9.4(x) on listed products |
9.2(x), 9.3(x), and 9.4(x) on listed products with Cisco footnote for 9.2(x) |
- In a DS-SFP-FC32G-LW vs DS-SFP-FC32G-SW comparison, the confirmed difference is fiber media and reach: LW uses 1310 nm single-mode fiber for 10 km links, while SW uses 850 nm multimode fiber for short 32G runs.
- The DS-SFP-FC32G-LW difference from DS-SFP-FC32G-ELW is documented reach. DS-SFP-FC32G-LW is the 10 km longwave optic, while DS-SFP-FC32G-ELW is the 25 km extended longwave optic.
- For buyers comparing which model to choose, keep DS-SFP-FC32G-LW on orders that require LC SMF 32G Fibre Channel longwave optics and use the Cisco compatibility matrix to confirm the MDS platform and NX-OS release.
Selection Guide
1. Match LW optics to an SMF route
Choose DS-SFP-FC32G-LW when the SAN link uses LC single-mode fiber and the route fits Cisco’s 10 km 32G longwave specification.
2. Keep SW optics off single-mode BOMs
DS-SFP-FC32G-SW is the adjacent shortwave 32G part. Select it only when the cabling plan uses Cisco-supported multimode fiber instead of the SMF path required for DS-SFP-FC32G-LW.
3. Reserve ELW for longer documented reach
DS-SFP-FC32G-ELW belongs in the order only when the design requires the Cisco-documented 25 km extended longwave reach rather than the 10 km LW distance.
4. Validate the MDS support row
Check the Cisco MDS compatibility matrix for the exact switch, line card, and NX-OS release before adding DS-SFP-FC32G-LW to a service spare order or expansion quote.
Ordering Checklist
|
Check Item |
What to Confirm |
Why It Matters |
|---|---|---|
|
Exact Product ID |
DS-SFP-FC32G-LW |
Prevents substitution with SW, ELW, 16G, or 64G Fibre Channel optics |
|
Host platform |
Cisco-supported MDS switch or Fibre Channel module |
Confirms the optic belongs in a documented MDS SAN port |
|
NX-OS support |
The installed release column supports this transceiver |
Keeps the order aligned with Cisco’s compatibility matrix |
|
Fiber media |
Dual LC single-mode fiber with 9.0-micron core |
LW optics are not multimode shortwave optics |
|
Optical span |
Link distance stays within the 10 km Cisco longwave reach |
Avoids replacing a 25 km ELW requirement with the standard LW optic |
|
Remote endpoint |
Matching 32G Fibre Channel longwave optic at the far end |
Reduces wavelength and fiber-media mismatch during installation |
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product ID | DS-SFP-FC32G-LW | Product type | 32-Gbps Fibre Channel longwave SFP+ transceiver |
| Ordering description | 32 Gbps Fibre Channel LW SFP+, LC | Spare ordering description | 32 Gbps Fibre Channel LW SFP+, LC, spare |
| Form factor | SFP+ | Connector type | Dual LC |
| Compatible platform family | Cisco MDS 9000 Series | Fibre Channel connectivity | 8/16/32-Gbps ports |
| Fiber type | Single-mode fiber | Core size | 9.0 microns |
| Wavelength | 1310 nm | Fibre Channel rates | 8/16/32-Gbps autosensing |
| Baud rates | 28.05, 14.025, and 8.5 GBd | Maximum cable distance | 10 km |
| Average transmit power | -5.0 to 2.0 dBm | Average receive power | -11.4 to 2.0 dBm |
| Fiber-loss budget | 6.4 dB at 8, 16, and 32 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 | MDS 9.x support matrix releases | 9.2(x), 9.3(x), and 9.4(x) on listed products |
Get More Information
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Quality Certifications
Customer Reviews
Questions & Answers
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What is DS-SFP-FC32G-LW?
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How is DS-SFP-FC32G-LW different from DS-SFP-FC32G-SW?
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Which fiber type fits DS-SFP-FC32G-LW?
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Can DS-SFP-FC32G-LW negotiate lower speeds?
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Why do teams use DS-SFP-FC32G-LW between data halls?
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What compatibility check applies to DS-SFP-FC32G-LW?
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What issue appears with DS-SFP-FC32G-LW on dirty fiber?
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Is DS-SFP-FC32G-LW an Ethernet optic?
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