
The 40G QSFP+ to 1x 10G SFP+ Passive DAC, 0.5m (2ft) provides a 40Gbps copper connection between QSFP+ to SFP+ ports with a cable length of 0.5m (2ft). As a passive cable it draws essentially no power and adds no latency to the link. Direct attach copper keeps both latency and power consumption to a minimum, which makes it the economical choice for 40G Ethernet data center and enterprise network environments.
Product Highlights
- QSFP+ to SFP+
- Data rate: 40Gbps
- Cable type: Passive Twinax
- Length: 5 factory standard lengths covering 1m (3ft) to 7m (23ft)
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| Part Number | QSFP-40G-1SPCxx |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP+ to SFP+ |
| Max. Data Rate | 40Gbps |
| Media | Copper |
| Cable Type | Passive Twinax |
| Cable Length | 1m (3ft), 2m (7ft), 3m (10ft), 5m (16ft), 7m (23ft) |
| Wire AWG | 26AWG |
| Minimum Bend Radius | 28mm |
| Max. Power Consumption | 0.1W Per End |
| Jacket Material | PVC (OFNR) |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | SFF-8636, SFF-8472 |
Applications
Designed for 40G Ethernet data center and enterprise network environments, the 40G QSFP+ to 1x 10G SFP+ Passive DAC, 0.5m (2ft) carries 40Gbps between QSFP+ to SFP+ interfaces. This unit is produced in 5 standard lengths from 1m (3ft) to 7m (23ft). It installs directly into standard ports with no separate transceivers or patch cords to manage at either end. Our factory programs the compatibility coding for your switch brand before shipment and verifies each unit on real host equipment.
Standards and Compatibility
Standards compliance covers SFF-8636, SFF-8472. The unit works in any equipment with a standard QSFP+ to SFP+ interface; if your network uses a specific vendor's coding, tell us the switch model and we will program and verify it before delivery.
Ordering Information
The part number depends on length, e.g. QSFP-40G-1SPC005 at the shortest standard length. This cable is available in 1m (3ft), 2m (7ft), 3m (10ft), 5m (16ft) and 7m (23ft). Lengths outside the standard range are made to order in our factory. Wire gauge: 26AWG. Volume pricing is available for project quantities.
Logistics
Our warehouse keeps fast-moving transceivers and cables ready for same-week dispatch. Courier, air freight and sea freight options are all available depending on your budget and schedule, and we consolidate multiple items into one shipment whenever it saves you cost.
Reliability Control
From incoming component inspection to final burn-in, quality is controlled at each step of production. Finished units are verified on real networking equipment in our compatibility lab, and test records are kept per batch so that any field question can be traced back quickly.
Packaging
Each unit is sealed in an anti-static bag, cushioned in a blister tray and boxed in an export-grade carton. Outer cartons carry handling marks and can be palletized for air or sea freight. If your project requires retail boxes, barcodes or your own brand on the label, we can arrange that as well.
Customization Service
Because we are the factory, customization is straightforward: non-standard lengths, different jacket materials, specific polarity or breakout wiring, and compatibility programming for particular switch brands are all routine work for us. Small trial orders are accepted so you can verify quality before scaling up.



