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Test socket fits 28-40mm? devices

Posted: 14 Jul 2005 ?? ?Print Version ?Bookmark and Share

Keywords:aries electronics? test socket? rf socket?

RF socket provides minimal signal lossAries Electronics has introduced a new high-frequency test socket for devices from 28mm to 40mm?. The new RF socket can be used for manual testing of devices with pitches as small as 0.50mm, in applications with speeds from 1GHz to 18GHz. The new sockets accept CSP, MicroBGA, DSP, LGA, SRAM, DRAM and flash devices.

The new high-frequency socket provides minimal signal loss for higher bandwidth capability via a signal path of 1.95mm. The socket's overall size of 89.08-by-69.85-by-44.68mm provides the maximum allowable space for load board components and connectors, said the company.

Solderless, pressure-mount compression spring probes allow the socket to be easily mounted to and removed from the test board. These gold-over-nickel compression spring probe screws leave very small witness marks on the bottom of the device solder balls, and are accurately located by two molded plastic alignment pins and secured with four stainless steel screws, according to the company.

The 4-point spring probe crown on the new socket ensures "scrub" on solder ball oxides for reliable contact mating, and the pointed probe works with LGAs, MLFs and other socket types. The compression spring probes are heat-treated beryllium copper alloy, plated with 0.75?m gold per Mil-G-45204 over 30 0.75?m nickel per QQ-N-290. The socket's molded components are UL94V-0 PEEK and/or Ultem. All hardware is stainless steel.

Contact forces of the new center probe sockets are 9g to 12g per contact for 0.50mm to 0.75mm pitches, and 17g to 20g per contact for 0.80mm pitches and larger. The operating temperature is -55C to 150C. Estimated contact life is more than 500,000 cycles and contact self-inductance is 0.59nH.

The new RF test socket is available in custom materials, platings, sizes and configurations. Pricing for a 100-lead socket starts at $599. Delivery is four to six weeks.

- Gina Roos

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