8 August 2012Manufacturing / Production Technology, Hardware & Services
Aries Electronics now offers a top-load burn-in socket designed to save time and money over conventional top-load sockets for new IC pin-out designs.
Based on a modular design, the new socket can easily be configured to accommodate devices on 0,3 mm pitch and higher, and can be employed on virtually any SMT device including BGA, μBGA, QFN, LGA and bare dies as well as a number of other devices like those used for MEMS testing with high acceleration rates.
In addition to the time and cost savings, the new top-load socket helps reduce device damage for equipment under test (EUT) by minimising several points of over-compression and errors in device insertion.
Devices are loaded and unloaded on the top of the socket without compressing the socket or holding it down. When engaged, the socket also avoids over-compression with pressure pads that cover a larger surface area to distribute force on the device. A built-in hard stop also reduces insertion force on the PCB.
The socket comes in a top-load configuration, ready for device insertion, so no special tooling or push plates are required. The manual dual latches can be removed to allow the socket to open when the force is removed for efficient and quick testing of multiple devices.
These sockets are easy to mount and remove from the test board thanks to two specifically located stainless steel alignment pins that are extremely precise.
The compression spring probes leave minimal witness marks on the bottom surface of the device pads for increased reliability. Compression spring probes are constructed of heat-treated beryllium-copper, and plated with a minimum of 0,75 micron gold per MIL-G-45204 over a minimum of 0,75 micron nickel per SAE-AMS-QQ-N-290.
Contact forces are 15 G per contact on a 0,30 mm to < 0,40 mm pitch; 16 G per contact on a 0,40 mm to <0,50 mm pitch and 25 G per contact on pitches of 0,50 mm or larger. Estimated contact life is a minimum of 500 000 cycles and operating temperature is -55°C to +150°C.
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