Replacement for FWLF-1631-36: Drop-In Alternatives We Stock
Looking for a replacement for the FWLF-1631-36 (FWLF-1631-36 - Finisar 2.7Gbps DWDM Single-mode Fiber 80km 1548.51nm SFP Transceiver Module)? Pro Disk Network ships drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the FWLF-1631-36
| SKU | FWLF-1631-36 |
|---|---|
| Product | FWLF-1631-36 - Finisar 2.7Gbps DWDM Single-mode Fiber 80km 1548.51nm SFP Transceiver Module |
| Current price | $1,222.64 |
| Stock status | In Stock |
| Detail page | View FWLF-1631-36 › |
Drop-in replacements for FWLF-1631-36
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
FWLF1634RL36 - Finisar 4.25Gbps 1000Base-ZX DWDM Single-mode Fiber 80km 1548.51nm Duplex LC Connector SFP Transceiver Module
SKU: FWLF1634RL36
Price: $1,826.84
FWLF1634RL25 - Finisar 4.25Gbps 1000Base-ZX DWDM Single-mode Fiber 80km 1557.36nm Duplex LC Connector SFP Transceiver Module
SKU: FWLF1634RL25
Price: $1,826.84
FWLF1634RL51 - Finisar 4.25Gbps 1000Base-ZX DWDM Single-mode Fiber 80km 1536.61nm Duplex LC Connector SFP Transceiver Module
SKU: FWLF1634RL51
Price: $1,826.84
DWDM-SFP10G-36.61-RF - Cisco Single-mode 10Gbps 10GBase-DWDM Fiber 80km 1536.61nm Duplex LC Connector SFP+ Transceiver Module
SKU: DWDM-SFP10G-36.61-RF
Price: $422.12
DWDM-SFP10G-36.61 - Cisco Single-mode 10Gbps 10GBase-DWDM Fiber 80km 1536.61nm Duplex LC Connector SFP+ Transceiver Module
SKU: DWDM-SFP10G-36.61
Price: $466.67
Cisco DWDM-SFP-3661/NS 1.25Gbps 1000Base-DWDM Single-Mode Fiber 80km 1536.61nm LC Connector SFP Transceiver Module
SKU: DWDM-SFP-3661-NS
Price: $1,054.00
DWDM-SFP-3661 - Cisco 1.25Gb/s 1000Base-DWDM Single-Mode Fiber 80km 1536.61nm LC Connector SFP Transceiver Module
SKU: DWDM-SFP-3661
Price: $1,147.54
DWDM-SFP-1536.61 - Cisco 1Gbps Multirate 1000Base-DWDM ZX Single-mode Fiber 80km 1536.61nm LC Connector SFP Transceiver Module
SKU: DWDM-SFP-1536.61
Price: $1,776.55
DWDM-XFP-36.61 - Cisco 10Gbps 10GBase-DWDM Single-Mode Fiber 80km 1536.61nm Duplex LC Connector XFP Transceiver Module
SKU: DWDM-XFP-36.61
Price: $3,137.08
DWDM-GBIC-1536.61 - Cisco 1.25Gbps 1000Base-ZX DWDM Single-mode Fiber 80km 1536.61nm SC Connector GBIC Transceiver Module
SKU: DWDM-GBIC-1536.61
Price: $3,144.07
DWDM-X2-36.61 - Cisco 10Gbps 10GBase-DWDM Single-Mode Fiber 80km 1536.61nm Duplex SC Connector X2 Transceiver Module
SKU: DWDM-X2-36.61
Price: $5,320.22
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.