10/100BASE-T SFP40G QSFP+ Passive DAC
The 40G QSFP+ Passive DAC series provides 40Gbps direct-attached connectivity using QSFP+ to QSFP+. The assembly combines a factory-terminated twinax copper assembly without separate optical modules in one tested product. This page covers the family rather than a single length, with standard options of 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft), 3m (10ft), 5m (16ft), 7m (23ft) and custom project lengths available for review.
Series Part Number: QSFP-40G-PCManufacturer: HT
Product Highlights
- QSFP+ to QSFP+ direct-attached interface arrangement
- Supports 40Gbps links
- Standard lengths: 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft), 3m (10ft), 5m (16ft), 7m (23ft)
- Factory-tested complete cable assemblies for enterprise, operator and data-center installations
Available Lengths
Available standard configurations include 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft), 3m (10ft), 5m (16ft), 7m (23ft). Select a length that follows the managed route without pulling on either connector or leaving excessive slack around airflow paths. Custom lengths can be manufactured for projects when the standard range does not match the installation.
Specifications
| Series Part Number | QSFP-40G-PC |
|---|---|
| Manufacturer | HT |
| Connector Type | QSFP+ to QSFP+ |
| Max Data Rate | 40Gbps |
| Minimum Bend Radius | 35mm |
| Wire AWG | 30AWG |
| Available Length Options | 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft), 3m (10ft), 5m (16ft), 7m (23ft) |
| Jacket Material | PVC (OFNR) |
| Temperature | 0 to 70°C (32 to 158°F) |
| Protocols | SFF-8436, QSFP+ MSA and IEEE 802.3ba |
Applications and Cable Routing
This 40G DAC series can be used for suitable switch-to-switch, switch-to-server and rack interconnection requirements. Measure the actual pathway through horizontal and vertical managers before choosing a length. Keep connector boots clear of sharp edges, observe the stated bend limit and leave enough access to release each latch during maintenance.
Compatibility and Factory Testing
Compatibility depends on the host interface, operating mode and the identification required by the equipment. For brand-coded versions, provide the equipment model and OEM reference so the intended configuration can be reviewed before production. Each complete assembly is inspected at both ends and checked for link operation; optical versions also require clean, protected interfaces throughout installation.
Ordering Information
Quote the QSFP-40G-PC series together with the required length, host brand, OEM reference where applicable and quantity. Mixed-length projects should use a separate order line for each configuration. Project labels and packaging can identify rack locations or endpoint assignments to make receiving and later maintenance easier.
Related Product Configuration
Additional factory information for this cable family is available on the 40G QSFP+ Passive DAC configuration page. You can also compare adjacent assemblies in the 40G DAC cable collection.
Quality Assurance and Shipping
Connector condition, assembly identification and functional link behavior are checked before protective packing. Standard configurations are prepared for dispatch as quickly as stock allows, while larger or customized orders receive a confirmed production schedule. Local and international delivery options are available.
Frequently Asked Questions
Does this page represent only one cable length?
No. It describes the product series and lists the standard length options. Confirm the exact length and corresponding order reference when requesting a quotation.
Are separate transceivers required?
No. The cable and its attached interfaces form one complete direct-attached assembly and are tested together.
Can a custom length or brand-compatible version be supplied?
Yes, subject to configuration review. Provide the required length, equipment model and OEM part number so compatibility and production details can be confirmed.
