Alternative to NTK591PB: Better-Value Equivalents in Stock
Comparing the NTK591PB (NTK591PB - Nortel 1.25Gb/s 1.25Base-CWDM Single-Mode Fiber 40km 1530nm Duplex 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 NTK591PB
| SKU | NTK591PB |
|---|---|
| Product | NTK591PB - Nortel 1.25Gb/s 1.25Base-CWDM Single-Mode Fiber 40km 1530nm Duplex LC Connector SFP Transceiver Module |
| Current price | $367.03 |
| Stock status | In Stock |
| Detail page | View NTK591PB › |
Alternatives to NTK591PB
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-SFP10G-1530 - Cisco Single-mode 10Gbps 10GBase-CWDM Fiber 40km 1530nm Duplex LC Connector SFP+ Transceiver Module
SKU: CWDM-SFP10G-1530
Price: $3,707.84
Cisco DS-CWDM4G1530 Single-mode 4.25Gbps 4GBase-CWDM Fiber 40km 1530nm Duplex LC Connector SFP Transceiver Module
SKU: DS-CWDM4G1530
Price: $176.21
DS-CWDM8G1530 - Cisco 8Gb/s 8GBase-CWDM Fibre Channel Single-mode Fiber 40km 1530nm Duplex LC Connector SFP+ Transceiver Module
SKU: DS-CWDM8G1530
Price: $1,358.86
SFP-10GCWER-53-ACC - Accortec 10Gb/s 10GBase-ER CWDM Single-Mode Fiber 40km 1530nm Duplex LC Connector SFP+ Transceiver Module
SKU: SFP-10GCWER-53-ACC
Price: $3,303.91
TN-XFP-LR4-C53 - Transition 10Gbps CWDM 10GBase-ER Fiber Channel 1530nm Single-mode 40km Duplex LC Connector XFP Transceiver Module
SKU: TN-XFP-LR4-C53
Price: $3,495.34
DS-CWDM4G1530-AS - Agilestar 4.25Gbps 4GBase-CWDM Single-mode Fiber 40km 1530nm Duplex LC Connector SFP Transceiver Module
SKU: DS-CWDM4G1530-AS
Price: $3,974.33
ONS-XC-10G-1530-RF - Cisco 10.5Gbps OC192/10GE/OTU2 CWDM Single-mode Fiber 40km 1530nm Duplex LC Connector XFP Transceiver Module
SKU: ONS-XC-10G-1530-RF
Price: $4,089.57
ONS-XC-10G-1530 - Cisco 10.5Gbps OC192/10GE/OTU2 CWDM Single-mode Fiber 40km 1530nm Duplex LC Connector XFP Transceiver Module
SKU: ONS-XC-10G-1530
Price: $6,270.21
10-2553-01 - Cisco 10Gbps 10GBase-CWDM OC192/10GE/OTU2 Single-mode Fiber 40km 1530nm Duplex LC Connector XFP Transceiver Module
SKU: 10-2553-01
Price: $6,604.18
CWDM-SFP-1530-RGD - Cisco 1Gbps 1000Base-CWDM Fibre Channel Single-mode Fiber 80km 1530nm Duplex LC Connector SFP Transceiver Module
SKU: CWDM-SFP-1530-RGD
Price: $177.17
CWDM-SFP-1530-RF - Cisco 1Gb/s 1000Base-CWDM Single-Mode Fiber 80km 1530nm Duplex LC Connector SFP Transceiver Module
SKU: CWDM-SFP-1530-RF
Price: $221.30
SFP-1GE-LH-CWDM-1530 - Juniper 1Gbps 1000Base-CWDM Single-mode Fiber 80km 1530nm Duplex LC Connector SFP Transceiver Module
SKU: SFP-1GE-LH-CWDM-1530
Price: $251.54
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.