ERNI Extends ERmet ZD High-speed Connector Standard with 2-pair Versions

8/5/2002 - ERNI has added 2-pair modules with 20 differential pairs to the ERmet ZD differential connector family. The vertical male connector modules for backplanes, and the angled female modules for the plug-in cards are each constructed of 10 contact wafers (40 signal contacts and 20 ground contacts). Both modules utilise "press-fit" connection technology.

The 2-pair modules are offered in a variety of lengths. The 2-pair configuration combines ideally with the 7-row ERmet connectors, since both have the same module width of 15.4 mm, and can therefore be used with a front panel division of 4 SUs. The 2-pair female module has pre-centring pins integrated for reliable mating.

The differential high speed backplane connector family ERmet ZD was developed jointly by ERNI and Tyco (Tyco Z-PACK HM-ZD). Thanks to the PICMG standardisation in the PICMG 3.x specification for the new advanced TCA platform and of VITA in VITA 34, the family is increasingly becoming the de facto standard for high-speed connectors. The ERNI-TYCO ZD connector is a further development of the HM connector according to IEC 61076-4-101, and provides a differential solution for applications with data rates of between 3 and 5 Gbit/s. The mechanical features of the connectors, such as basic layout, sequential mating, coding and press-in technology are very similar to the connectors according to IEC 61076-4-101.

The connectors have been specially designed for applications using differential signals with characteristic impedances of 100 Ohms, they offer particularly low crosstalk and low signal skew.

The in-line design of the signal and ground contacts,facilitates straightforward, economical track routing. The signal and ground contacts have different mating levels, 1.5 mm apart, ensuring safe mating. The contacts are protected by a robust housing.

The ERmetZD connectors are now offered in 25 mm modules with the following configurations: 40 differential pairs with 4 pairs and 8 rows (80 signals and 40 grounds), 30 differential pairs with 3 x 6 configuration (60 signals and 30 grounds), and 20 differential pairs with 2 x 4 (40 signals with 20 grounds). Each differential transmission line (100 Ohms) is closely coupled with the ground signals, in order to achieve controlled impedance and low noise. The L-shaped shield contacts on the male side also assist secure mating and provide effective protection against damage. The housing includes additional pre-centring pins to make reliable insertion easier. SPICE models, HF test reports and samples are available on request.

ERNI Elektroapparate GmbH, a German member company of the international ERNI Holding Group, was established in1956. At Adelberg (near Göppingen) and in Chester, Virginia (USA), ERNI develops and produces a wide range of connectors for backplane and printed circuit board applications, which was even further expanded by the takeover of Maxconn. In the system technology sector, customer-specific printed circuit board systems and backplanes were developed, which are produced in backplane shops in Germany, USA and Korea. In the financial year 2001 ERNI achieved a turnover of more than Euro 150 million with more than 750 employees. ERNI is globally active and has its own branches in all important industrial regions. The products are also sold via a network of representatives and leading distributors such as Arrow and RS.

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