EX40T-C71P

01. High-Speed Differential Signals

The construction supports high-speed differential signals such as LVDS, IEEE 1394, and USB 2.0. Use of twisted pair cable or twinax cable permits transmission speeds up to several hundred Mbps and higher per twisted pair.

(A) Impedance Matching

The connector is designed to minimize reflections with a differential impedance of 100 ohms between adjacent contacts.

(B) Low Skew Construction

An equivalent electrical length is maintained between adjacent contacts while the equivalent electrical length between opposing terminals is approximately zero.

Consequently the skew within differential pairs as well as between differential pairs is approximately zero. However, a low skew between differential pairs is permitted by going through another layer of the board.

(C) Low Crosstalk

The design features a staggered arrangement between opposing contacts for low crosstalk effects between opposing pairs even though these are low-profile connectors.

02. Batch Wiring of Cables Using Solder Paste

Soldered wiring has been used as the wiring method for the plug side composite cable, thin cable, and drain wires; however, paste soldering permits the batch wiring of prepared cables. (Existing soldering methods can also be used to wire the connectors.)

03. No Shrink Tubing Required

The wiring portion of the plug side is secured by the molding which prevents short circuits without the use of shrink tubing. Since shrink tubing is not used, this allows the twist back length of the twisted pair cable or the twinax cable to be shortened, thereby permitting the
impedance of the wiring section to be kept in check.

04. Power and Signal Contacts

The 65 position connector is designed with 59 signal contacts and 6 power contacts. Each power contact is rated for 2 Amps. The 71 position connector is supplied with signal contacts only.

05. Low-Profile Design

With the trend toward lower profiles, the receptacle is made to drop into the board, which results in a height dimension, including the board, of 5.6mm.