Part Number: M27500-24SB2T23

Manufacturer: TE Connectivity / Raychem

Description: Multi-Conductor Cables

Shipped from: Shenzhen/HK Warehouse

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The M27500-24SB2T23 cable is a wire that meets military specifications and can either have a single conductor or several conductors. This cable can have either a single or a double shield and jacket. In addition to their widespread use in military and aerospace applications, such as enabling the installation of in-flight cables, their construction is such that they may function well in even the most difficult of settings. This high-performance cable contains MS22759/32 Mil-Spec conductors inside and an exterior jacket constructed of cross-linked extruded ETFE. The specifications of ANSI/NEMA WC 27500 REV A were followed in the production of this cable.

M27500-24SB2T23 Applications

  • Motorsport electronics
  • Airframe
  • Shipboard
  • Missile
  • Avionics


Frequently Asked Questions

What Is Twisted Pair Cabling?

To reduce electromagnetic interference (EMI) in communications wiring, twisted pair cabling involves twisting together the wires of a single circuit’s two conductors. A twisted pair increases the rejection of external electromagnetic interference compared to a single wire or an untwisted balanced pair by decreasing electromagnetic emission from the pair and crosstalk between surrounding pairs. Alexander Graham Bell came up with the idea for it.

Twisted-pair cabling can be insulated to reduce interference further. Unshielded twisted pair (UTP) cable is the latter, while shielded twisted pair (STP) cable is the former (UTP).

To lessen the impact of noise currents created on the line due to the coupling of electric or magnetic fields, a twisted pair can be utilized as a balanced line in a balanced circuit. According to this theory, the induced currents in both wires are practically identical. Twisting the wires makes it so that they are roughly the same distance apart from the interference source, reducing the impact of each wire. Thus, the noise generates a common-mode signal, which may be suppressed by detecting just the difference signal (which is the desired signal) at the receiver.

When the noise source is near the signal wires, common-mode rejection begins to fail on untwisted wires because the closer wire will couple with the noise more strongly, and the receiver will be unable to eliminate it. There is a particularly severe case of this issue with telecommunication cables, where adjacent pairs of the same cable can extend for miles. By twisting the pairs, the effect is mitigated because the wire closest to the noise source is switched out at every half-twist. So long as the interference source is constant (or nearly constant) during the length of a single twist, the produced noise will continue to be a common mode.

One of the criteria for a certain cable is its twist rate (sometimes called the pitch of the twist, typically defined in twists per meter). The benefits of twisting are somewhat diminished when adjacent pairs have the same twist rate since the same conductors of the various pairs may lie next to one another. Because of this, it is often required that the twist rates be different, at least for cables with a few pairs.

UTP cable lacks the protective covering of other types of twisted pair cable (usually S/FTP or F/UTP cable). UTP wiring is the standard for telephones and is widely used in data networks.

How Is Shielded Twisted Pair Wiring Installed?

The need for multiple connections at some telephone sets or desks necessitates the installation of twisted pair wiring with two or more pairs within a single wire. Shielded twisted pair is commonly used in commercial cabling systems, while unshielded twisted pair (UTP) is the standard in residential settings.

Twisted pair, which uses two separate cable runs to reach home, has become increasingly common in recent years. The availability of a second line, maybe for use with a modem, is made feasible by the supplementary pair.

When packaged in several pairs, the twisted pair (whether UTP or STP) has a distinct color for each pair. Pair multiples are specific to a given application and might vary widely between analog, digital, and Ethernet domains. Accordingly, the use of color coding facilitates the identification of complementary pairs.

Though twisted pairs are typically associated with domestic applications, businesses frequently employ higher-quality twisted pairs for horizontal wiring in LAN installations because they are more affordable than coaxial (coax) cables. Twisted pair alternatives include coaxial wire and fiber optics.

Shielded twisted pair employs RS-449, RJ-45, RS-232, and RJ-11 connectors to minimize electrical interference in busy workplaces.

What Distinguishes A Shielded Twisted Pair From Ethernet Or Telephone Cable?

Despite having similar names, unshielded and shielded twisted pair cable is not the same as the telephone or Ethernet cable used to connect a phone or computer to a wall connector. A silver satin wire is a type of parallel conductor.

There are multiple possible hole patterns, or pinouts, for the wall jack that these cables connect to. These patterns are determined by the types of wire (digital, analog, LAN, etc.) that the installation anticipates being inserted into the socket. (This is why users may occasionally find that the wall jack connections don’t match their plug while not connected to a LAN wirelessly.)

What Is The Difference Between Stp, Ftp And S/Ftp, And Utp?

Let’s quickly examine how shielded twisted pair cables vary from various other twisted pair options:


To prevent electromagnetic interference, shielded twisted pair cabling works as a conducting shield by enclosing the four pairs of signal-carrying wires. STP cables come in various forms, including foil twisted pair (FTP) and shielded foil twisted pair (S/FTP).


STP cables are also available with a thinner foil shield. However, keep in mind that the bend radius and pulling strain must be closely watched to stop these insulated wires from breaking during installation.


There are STP cable systems that use a thick braided cover to strengthen the cable to prevent the danger of tearing. The cable’s pairs of wires are insulated and twisted to offer the best defense against crosstalk and electromagnetic interference.


Unshielded twisted pair is the more typical type of wire used in residential construction. In contrast to STP, FTP, and S/FTP lines, UTP cables lack a physical shield to reduce interference. As balancing and filtering techniques, UTP instead uses media filters and baluns, a construction from “balanced to imbalanced.”

In essence, the design of various cable kinds differs the most. They both provide the same function: to connect communications hardware reliably.


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