Replacement for TNSFPLXB81: Drop-In Alternatives We Stock
Looking for a replacement for the TNSFPLXB81 (TNSFPLXB81 - Transition 1000Base-LX TX-1510nm/RX-1590nm 80km 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 TNSFPLXB81
| SKU | TNSFPLXB81 |
|---|---|
| Product | TNSFPLXB81 - Transition 1000Base-LX TX-1510nm/RX-1590nm 80km Transceiver Module |
| Current price | $2,809.20 |
| Stock status | In Stock |
| Detail page | View TNSFPLXB81 › |
Drop-in replacements for TNSFPLXB81
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.
TNSFPLXB82 - Transition 1000Base-LX TX-1590nm/RX-1510nm 80km Transceiver Module
SKU: TNSFPLXB82
Price: $24.21
TN-SFP-LXB161 - Transition 1000Base-LX 1510nm TX/1590nm RX LC Connector 160 km Transceiver Module
SKU: TN-SFP-LXB161
Price: $3,447.83
TN-SFP-LXB162 - Transition 1000Base-LX 1590nm TX/1510nm RX LC Connector 160 km Transceiver Module
SKU: TN-SFP-LXB162
Price: $3,447.83
TN-SFP-LX8-C59 - Transition CWDM 1000Base-LX/Fiber Channel 1590nm SM LC Connector 80km Transceiver Module
SKU: TN-SFP-LX8-C59
Price: $731.28
TN-SFP-OC3S8-C59 - Transition 100Mbps CWDM SFP 100Base-FX/0C-3 LC Connector Single-mode 80km 1590nm Transceiver Module
SKU: TN-SFP-OC3S8-C59
Price: $1,476.72
TN-CWDM-SFP-1590 - Transition 1Gbps 1000Base-LX/ZX CWDM Fibre Channel Single-mode Fiber 80km 1590nm LC Connector SFP (mini-GBIC) Transceiver Module
SKU: TN-CWDM-SFP-1590
Price: $1,662.17
TN-CWDM-10G-1590-80 - Transition 10Gbps 10GBase-ZR Single-mode Fiber Sm Lc CWDM 1590nm 80km SFP+ Transceiver Module
SKU: TN-CWDM-10G-1590-80
Price: $4,744.93
TN-SFP-LX8-C51 - Transition CWDM 1000Base-LX/Fiber Channel 1510nm SM LC Connector 80km Transceiver Module
SKU: TN-SFP-LX8-C51
Price: $731.28
TN-CWDM-100LX-1510 - Transition 155Mbps 100Base-LX CWDM Single-mode Fiber 80km 1510nm LC Connector SFP Transceiver Module
SKU: TN-CWDM-100LX-1510
Price: $1,395.25
TN-SFP-OC3S8-C51 - Transition 100Mbps CWDM SFP 100Base-FX/0C-3 LC Connector Single-mode 80km 1510nm Transceiver Module
SKU: TN-SFP-OC3S8-C51
Price: $1,476.72
TN-CWDM-SFP-1510 - Transition 1Gbps 1000Base-LX/ZX CWDM Fibre Channel Single-mode Fiber 80km 1510nm LC Connector SFP (mini-GBIC) Transceiver Module
SKU: TN-CWDM-SFP-1510
Price: $1,662.17
TN-CWDM-SFP-1590-40 - Transition 1.25Gbps 1000Base-LX 1590nm Single Mode 40km LC Connector SFP Transceiver Module
SKU: TN-CWDM-SFP-1590-40
Price: $960.72
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.