Replacement for 740-031851: Drop-In Alternatives We Stock
Looking for a replacement for the 740-031851 (740-031851 - Juniper 1000GBase-SX 850nm 500m SFP Optical Transceiver Module)? Pro Disk Network ships Juniper 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 740-031851
| SKU | 740-031851 |
|---|---|
| Product | 740-031851 - Juniper 1000GBase-SX 850nm 500m SFP Optical Transceiver Module |
| Current price | $131.38 |
| Stock status | In Stock |
| Detail page | View 740-031851 › |
Drop-in replacements for 740-031851
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.
740-007326 - Juniper 1Gbps 1000Base-SX Multi-Mode Fiber 550m 850nm LC Duplex Connector SFP Transceiver Module
SKU: 740-007326
Price: $92.59
740-011571 - Juniper 10Gbps 10GBase-SR XFP 850nm 300m Transceiver Module
SKU: 740-011571
Price: $71.58
740-035329 - Juniper CFP-100GBASE-SR10 850nm 150m 100Gb/s Multi-Mode Fiber MPO/MTP CFP Transceiver Module
SKU: 740-035329
Price: $113.68
AFBR-5715PZ-JU1 - Juniper 1000Base-TX-RX 850nm Optical Fiber SFP Transceiver Module
SKU: AFBR-5715PZ-JU1
Price: $99.86
CTP-SFP-1GE-SX - Juniper 1Gbps 1000Base-SX Multi-Mode Fiber 550m 850nm LC Duplex Connector SFP Transceiver Module
SKU: CTP-SFP-1GE-SX
Price: $77.24
SFP-GE-SX - Juniper 1Gb/s 1000Base-SX Multi-mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver module
SKU: SFP-GE-SX
Price: $78.00
RX-550M-SFP - Juniper 1Gbps 1000Base-SX SFP 850nm 550m Transceiver Module
SKU: RX-550M-SFP
Price: $80.54
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.