Milton Keynes February 2010 – Cynergistic Technologies are delighted to offer a new Kelvin test socket that handles devices with a lead pitch down to 0.4 mm. The new socket uses two independent Aries Kelvin spring probes per device pad for highly reliable, low resistance testing of MLF, QFN, LGA and other leadless devices. With a signal path of only 0.082" (2.08 mm), the new Kelvin test socket provides minimal signal loss for higher bandwidth capability. The socket’s low cost, two-piece construction and small overall size allows the maximum number of sockets per test board. The operator-friendly, low profile socket uses solderless pressure mount compressionspring probes accurately located by two molded plastic alignment pins and mounted with four stainless steel screws, allowing for easy mounting and removal from the test board. For increased reliability, the gold-over-nickel-plated probes leave very small witness marks on the bottom surface of the device pads. The probes are constructed of heat-treated beryllium-copper with a minimum of 50 micron inches (1.27 micron mm) gold per Mil-G-45204 over 50 micron (1.27 micron mm) nickel per SAE-AMS-QQ-N-290. The pressure pad compression spring provides proper force against the device and allows for height variations in device thickness. A probe blade edge tip ensures cutting through solder oxides layers for use in applications with RoHS-coated or gold pads. Contact forces are 16 g per contact on a 0.40 mm to 0.45 mm pitch. The probe can operate in temperatures from -55°C to 150°C (-67°F to 302°F) and contact life is an estimated minimum of 500,000 cycles. The machined socket components are UL 94V-0 PEEK or Torlon, screws and alignment pins are stainless steel, and molded socket components are UL 94V-0 Ultem. The Kelvin Test Socket Contact System is available for any Aries CSP Test Socket. As with all Aries sockets, the new Kelvin test socket is available in custom materials, platings, sizes and configurations to suit specific applications. Contact Cynergistic Technolgies for a detailed quotation of this product which is available on a standard lead time of 4 weeks. Cynergistic Technologies specialises in the supply of standard, modified standard or custom electro-mechanical components. Utilising industry experts and technical specialists we are one of the few true demand creators and supply fulfillment companies for the UK and Eire. For further information please contact Dave Mellor of Cynergistic Technologies Limited on +44 (0)844 800 9324 or email sales@cyntech.co.uk
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