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TTI has steadily grown to become the world’s leading passive and connector specialist in the electronic component industry. TTI maintains an extensive inventory and offers the best interconnect choices in the industry, meeting almost any requirement of our customers. The company’s basic strategy is to focus on a specific range of products and strive to be the industry’s leading distributor. No other company offers the unique combination of benefits that TTI provides. We maintain an extensive inventory of circular connectors, automotive connectors, backplane connectors, D-sub connectors and terminal blocks from the industry's finest manufacturers.

The team of specialists at TTI has more experience in interconnect product areas than any other distributor. All TTI employees participate in company-wide training programs, which have helped create the most product-knowledgeable team in the industry. Additionally, customers can rely upon the TTI sales team as a valuable resource of information and guidance.

Featured Interconnect Products

Routing and Retention Aids | PKC Group

Routing and Retention Aids | PKC Group
PKC offers a Routing & Retention Aid product family that provides a robust and inexpensive means of routing and retaining harnesses, connectors and other components within a vehicle. With over 50 different part configurations, the PKC Routing & Retention Aid family offers multiple retention options to sheet metal, studs, and plastic for both interior and exterior applications. ( more info )

Smart Power Distribution Centers (sPDC) | PKC Group

Smart Power Distribution Centers (sPDC) | PKC Group
Use of a printed circuit board (pcb) as a base for connections inside a PDC ables intergration of various smart functions to the product. Such smart functions can be for example diagnostics of fusing failures, load current measurements and connection to in-vehicle networks. ( more info )

Fuseboxes | PKC Group

Fuseboxes | PKC Group
Fuse box in a vehicle is typically located close to vehicle batteries and provides protected power for vehicle electrical system. Fuse box functions as a junction box for cables distributing high currents inside a vehicle. Power cable outlets are typically protected with mega- or midi fuses. Power distribution inside a fuse box is realized using bus bars or a printed circuit board. ( more info )

AT Circular Connector with AT Contact Technology | Amphenol

AT Circular Connector with AT Contact Technology | Amphenol
Amphenol Industrial Operations introduces a series of plastic receptacles featuring Amphenol’s AT contact technology. This series is designed to perform in the demanding environment found on construction and farm equipment as well as truck environment. ( more info )

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Product Overview

Interconnects are available at TTI Inc. from industry leading manufacturers. TTI is an authorized distributor for many connector manufacturers including: 3M Electronic Solutions Division,
Amphenol Aerospace, Amphenol Industrial, Amphenol PCD,
FCI, Glenair, Molex, Phoenix Contact, TE Connectivity
and TE Connectivity / AMP.

Interconnect Components

Circular Connectors

Circular Connectors Circular connectors consist of two mating halves or shells, each of which contains multiple pin or socket configurations. Internal insulating spacers, or inserts, support the contacts in their proper orientation. The plug end normally contains pin contacts and mates with the receptacle half, which normally contains the socket contacts. By nature of their shape and construction, circular connectors tend to be rugged and are generally used in hostile environments.

Circular Connectors - 38999

38999 Connector 38999 (a type of circular connector) is one of the most popular connector series for modern military applications, and it is becoming more prevalent in high tech commercial applications such as telecommunications base stations.

D-Subminiature Connectors

D-Subminiature Connectors D-subminiature connectors (D-subs) have rectangular shells with D-shaped mating faces. Plug connectors hold pin contacts while receptacle connectors hold socket contacts. The mating face provides polarization to prevent mismating, while the shell of the connector provides rugged protection for otherwise exposed pin contacts. D-subs connect the electronics' inside equipment to the "outside world" either directly, by mounting to the PC board, or indirectly, by means of jumper wires.

Ethernet & Modular Connectors

Ethernet Ethernet/modular connectors are found in nearly all industries where small pin count connections (generally 8 or less) are needed. They are most widely used in telecommunications applications with the most obvious example being their use in modular telephones to connect cords, handsets, etc. Crimp, solder, and insulation displacement are the most common methods of termination for these devices.

IC & Component Sockets

IC & Component Sockets Some applications require that integrated circuits (IC's) and IC chips be placed on a PC board in such a manner that they can be easily plugged in or removed. To accomplish this, IC sockets and chip carriers are used. SIP and DIP sockets, Pin Grid Arrays (PGA's) and Plastic Leaded Chip Carriers (PLCC's) are the most common socket products used.

RF Connectors

RF Connectors RF connectors are used to transmit signals from point to point with minimal energy loss while reducing noise. They can be used for DC and audio frequency signals when effective shielding is desired and are used to transmit radio frequency energy up to 18 billion cycles per second. Used on signal carrying systems such as audio, data communications and CATV systems, coaxial connectors come in hundreds of sizes and shapes designed to meet performance requirements for both military and commercial markets. There are four basic types of RF connectors: plug, receptacle, jack and adapter. Although there are many different styles of RF connectors, most of them are used to terminate a single coax cable and have a center contact, an insulator and a shell.

Terminal Blocks

Terminal Blocks Terminal blocks consist of one or more electrical terminals mounted on a solid insulation material. Each is used to terminate a discrete wire or wires. The most common are screw-type with each screw or pair of screws isolated from the next. Terminations involve either connecting power wires to a system or connecting signal or sensor wires to a computer, telephone system, or control system. The barrier blocks are usually positioned just outside the protective cover of the system for ease in hookup. The primary function is to protect against shorting.


Terminal Terminals and splices are used in almost every electronic application. They are used anywhere a discrete wire needs to be spliced, terminated or attached to a terminal block or post. Terminals and Splices come in various styles and are available with insulated and uninsulated barrels. Two other important characteristics to consider are the wire range the terminal or splice will accept, and the stud size that the terminals will be used on.

Things to Consider

Electrical Factors
  • Resistance: Critical if connectors are in series and the impedances are low.
  • Maximum current & voltage: Influenced by the connector, the size of conductors connected to it and the number of circuits passing the current.
  • Intercontact capacitance: Important at all frequencies but becomes more important at higher frequencies because of its effect on delay, crosstalk and the impedance of a circuit.
Mechanical Factors
  • Mounting: Includes the appropriate shape of the connector for the application, the dimensional tolerances, the accessibility of the connector location, the protection required of the shell and contacts, and assembly format (thru-hole vs. surface mount). It also includes consideration of the hardware required to mount the connector.
  • Wire termination: Involves specifying the appropriate contact type used, the termination technique most efficient for the wire used, and the number of connections made.
  • Connector mating: Several factors are involved here...frequency of mating, the need for polarity and other mating alignment features for contacts and shells, the need for quick connect and disconnect, contact insertion/extraction force requirement levels, the need to protect against excessive vibration, and the support structures needed for the cable assembly.
  • Environmental conditions: Included in this category are temperature extremes, humidity, salt spray, corrosion-causing chemicals, and contaminates. These environmental factors are determined by the location in which the equipment containing the connector must operate.