Alternative to NTK591TH: Better-Value Equivalents in Stock
Comparing the NTK591TH (NTK591TH - Nortel 1Gb/s 1000Base-CWDM Single-Mode Fiber 120km 1610nm LC Connector SFP Transceiver Module) against alternatives? Pro Disk Network stocks 12 similar parts that offer comparable performance at different price points. Each option below is in-stock, US-warehoused, and tested-and-certified before ship. Bulk pricing is available on quantities of 5+; B2B procurement can use Net 30 with PO.
About the NTK591TH
| SKU | NTK591TH |
|---|---|
| Product | NTK591TH - Nortel 1Gb/s 1000Base-CWDM Single-Mode Fiber 120km 1610nm LC Connector SFP Transceiver Module |
| Current price | $502.20 |
| Stock status | In Stock |
| Detail page | View NTK591TH › |
Alternatives to NTK591TH
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.
CWDM-SFP-1550-120KM - Cisco 1Gbps 1000Base-CWDM Fibre Channel Single-mode Fiber 120km 1550nm Duplex LC Connector SFP Transceiver Module
SKU: CWDM-SFP-1550-120KM
Price: $598.36
10-1460-01 - Cisco 1Gb/s 1000Base-CWDM Single-Mode Fiber 120km 1610nm Duplex SC Connector GBIC Transceiver Module
SKU: 10-1460-01
Price: $566.91
NTK591TH-ACC - Accortec 1Gb/s 1000Base-CWDM Single-Mode Fiber 120km 1610nm LC Connector SFP Transceiver Module for Ciena Compatible
SKU: NTK591TH-ACC
Price: $610.22
10-1997-01 - Cisco 155Mb/s OC-3/STM-1 CWDM Single-Mode Fiber 120km 1610nm LC Connector SFP Transceiver Module
SKU: 10-1997-01
Price: $278.80
FTR-1619-61 - Finisar 1.25Gbps 1000Base-CWDM Single-mode Fiber 120km 1610nm Transmitter Wavelength SC Connector GBIC Transceiver Module
SKU: FTR-1619-61
Price: $278.80
NTK590TH - Nortel 1Gb/s 1000Base-CWDM Single-Mode Fiber 70km 1610nm LC Connector SFP Transceiver Module
SKU: NTK590TH
Price: $367.03
CWDM-SFP-1610-RF - Cisco 1Gb/s 1000Base-CWDM Single-Mode Fiber 80km 1610nm Duplex LC Connector SFP Transceiver Module
SKU: CWDM-SFP-1610-RF
Price: $266.09
CWDM-SFP-1610 - Cisco 1Gb/s 1000Base-CWDM Single-Mode Fiber 80km 1610nm Duplex LC Connector SFP Transceiver Module
SKU: CWDM-SFP-1610
Price: $368.42
SFP-CWDM-1610-70 - Cisco 1Gb/s 1000Base-CWDM Single-Mode Fiber 70km 1610nm LC Connector SFP (mini-GBIC) Transceiver Module
SKU: SFP-CWDM-1610-70
Price: $4,742.18
NTK591QH - Nortel 1Gb/s 1000Base-CWDM Single-Mode Fiber 120km 1550nm LC Connector SFP Transceiver Module
SKU: NTK591QH
Price: $502.20
NTK591SH - Nortel 1Gb/s 1000Base-CWDM Single-Mode Fiber 120km 1590nm LC Connector SFP Transceiver Module
SKU: NTK591SH
Price: $502.20
How we pick alternatives
Every recommendation above was selected using these criteria:
- Spec parity — capacity, speed, port count, and form factor matched within a 10% tolerance
- Price spread — alternatives shown across the price range, so you can pick on budget
- Brand mix — both OEM-equivalent and trusted aftermarket, all certified
- Reliability data — preferred parts have failure rates below 1% in our 18-month return tracking
- In stock today — shipping today, not 4-6 weeks from now
Want a side-by-side spec comparison?
We can prepare a written comparison covering throughput, power draw, form factor and validated compatibility. Email sales@prodisknetwork.com or call +1 (407) 205-8454 — most quotes ship within 4 business hours.