Quick Answer / Summary: Cat 7A cable is rated to 1000 MHz, Class FA, and is normally built as S/FTP with foil per pair plus braid. It is not a TIA category. Buy it only when the design calls for it, insist on a Class FA channel test at the installed length, and confirm the connector interface and shield bonding before the order.
Cat 7A doubles the bandwidth of Cat 7 to 1000 MHz and is defined as Class FA in ISO/IEC 11801. It is a specialist product: the cable is heavier, the shield is more demanding, and the connector interface often decides whether the installed channel can actually reach the limit. Buying it well means buying a tested channel, not a printed jacket.
Class FA is a channel result; the cable alone does not prove it.What Cat 7A Actually Adds
Cat 7A raises the tested frequency from 600 to 1000 MHz and tightens crosstalk and shielding performance. For 10GBASE-T the reach is still 100 m, so the practical benefit is headroom and immunity rather than more distance.
Frequency and class
Class FA is the ISO/IEC designation that pairs with Cat 7A. The channel must meet the limit at 1000 MHz, which requires consistent pair geometry, a stable shield and terminations that do not open the shield. A cable that passes on a short sample can fail once connectors and patch cords are added.
Where the extra cost goes
The cost sits in tighter manufacturing tolerances, heavier shielding and lower-yield production. That is why Cat 7A trades at a clear premium over Cat 7 and a larger premium over Cat 6A, and why price alone is a poor selection criterion.
The Connector Problem
The standard pairs Class FA with GG45, TERA or equivalent shielded interfaces. In practice many installations use shielded RJ45, which can work but narrows the margin and depends heavily on termination quality.
Interface choice
GG45 and TERA are designed for the category and preserve the shield through the mating point. Shielded RJ45 is more common and more serviceable, but the assembly must be tested as a channel. Whichever interface you choose, keep it consistent end to end.
Termination discipline
Cat 7A fails at the ends far more often than in the middle. Pair untwist must be minimal, the foil must be bonded to the connector shell, and the drain wire must be terminated correctly. A skilled installer with a tested procedure is worth more than an extra margin on the cable.
How to Verify Before You Pay
Verification for Cat 7A is a documentation exercise plus a physical sample. Both are cheap compared with replacing a failed riser.
Documentation to demand
A construction drawing showing foil, braid and drain wire; the conductor AWG and metal; the jacket compound; and a test report against the Class FA limit with a batch reference. If the report does not name the limit, it is not evidence.
Sample checks
Measure the diameter and AWG, confirm the braid coverage, check the print for the category, and bend the cable around a mandrel to see whether the shield stays intact. A sample that kinks or opens at the shield will not survive a pull.
When Cat 7A Is the Right Buy
Cat 7A is justified in high-interference industrial environments, laboratories, broadcast facilities and buildings with a very long service life where re-cabling is expensive. It is rarely justified in ordinary office or home routes.
Good fit
Industrial cells with drives and welding equipment, hospital imaging suites, test laboratories and any route where EMI is present and rework is costly. The shield and headroom earn their keep in those settings.
Poor fit
Standard office fit-outs, home networks and short patch runs, where Cat 6A meets the requirement at lower cost and with easier termination. Paying for Class FA in those routes buys headroom nobody will use.
Cat 6A, Cat 7 and Cat 7A Side by Side
| Attribute | Cat 6A | Cat 7 | Cat 7A |
|---|
| Tested frequency | 500 MHz | 600 MHz | 1000 MHz |
| ISO/IEC class | Class E-A | Class F | Class FA |
| Typical construction | U/UTP or F/UTP | S/FTP | S/FTP, heavier shield |
| 10GBASE-T reach | 100 m | 100 m | 100 m |
| Standard connector | RJ45 | GG45 or TERA | GG45 or TERA |
| Relative cable cost | Baseline | Higher | Highest |
Practical Applications
Cat 7A appears in industrial automation cabinets, broadcast and post-production facilities, medical imaging rooms, laboratory instrumentation and high-value buildings where the cabling must outlast two or three equipment generations. In each case the justification is immunity and service life, not raw speed.
Reviewed by ZONG Cable Editorial | Last updated: 26 October 2026 | Reviewed against TIA-568.2-D / ISO/IEC 11801-1 Class F and FA channel requirements.
How this guide was built: Bandwidth, class and connector guidance follows ISO/IEC 11801-1 Class FA and the 1000 MHz test limit, cross-checked against how 10GBASE-T channels are specified in TIA-568.2-D. Cost relationships reflect construction complexity rather than a price list.
Disclosure: We do not sell Cat 7A cable or certify installations. Use an accredited tester and a qualified installer for channel acceptance.
Frequently Asked Questions
Is Cat 7A faster than Cat 6A?
It has more bandwidth headroom at 1000 MHz versus 500 MHz, but 10GBASE-T still runs to 100 m on both. The practical gain is immunity and margin, not more distance.
Does Cat 7A need special connectors?
The standard specifies GG45 or TERA. Shielded RJ45 is widely used and can pass when the assembly is tested, but it is a deviation from the letter of the standard.
Can I mix Cat 7A cable with Cat 6A patch panels?
You can physically, but the channel is then limited by the weaker component. If you need Class FA, keep the panels, jacks and cords at the same category.
Is Cat 7A worth it for a data centre?
Usually fibre is the better answer for backbone links. Cat 7A is more relevant to industrial and specialised copper routes than to data hall backbones.
How is Cat 7A tested?
As a channel against the Class FA limit at 1000 MHz, including patch cords. Permanent link tests alone do not prove the channel.
