A new LGA socket addressing high-performance requirements for 1.016-mm pitch devices is called the SBT-LGA-9019. The contactor is a stamped spring pin with 19-gm actuation force per pin and cycle life of 125,000 insertions. The self-inductance of the contactor is 0.93 nH, insertion loss of < 1 dB at 23 GHz, and capacitance 0.097 pF. The current capacity of each contactor is 4 A. Socket temperature range is -55 to +180°C. The socket also features an IC guide for precise edge alignment of the processor. The specific configuration of the package to be tested in the SBT-LGA-9019 is LGA, 52.5×45-mm body size and 1.016-mm pitch. The socket has a heat sink lid to dissipate heat from the Xeon processor. An existing server board has a production socket that can handle 10 insertions only.
SBT-LGA-9019 must be used on top of an existing socket to enable screening of (125K+) processors on a server board. To use, place interposer board on an existing socket and mount the socket body with spring pins using provided hardware (utilizes existing heat sink mount holes in PCB). Drop the IC into the socket, close the heat sink lid, and apply down force by spring-loaded hardware on four corners. This socket can be used for hand test, screening processors and validation/characterization applications with the most stringent requirements.
The spring-pin socket product line was designed to be used in the existing server board with production socket previously soldered. Custom designs are also available. The SBT-LGA-9019 socket features a special contact design with outside spring and flat stamped plungers that provide a robust solution for burn-in and test applications including excellent electrical signal integrity to meet the requirements of demanding analog, digital, RF, Bluetooth and medical device applications.
The socket is mounted using supplied hardware on the target PCB with no soldering and uses the smallest footprint in the industry. The smallest footprint allows inductors, resistors and decoupling capacitors to sit close to the device for impedance tuning. The heat sink lid incorporates a quick installation method using spring-loaded hardware so ICs can be changed out quickly.
Pricing for the SBT-LGA-9019 is $2,980 at qty 1 with reduced pricing available depending on quantity required.
Ironwood Electronics, 1335 Eagandale Ct., Eagan, MN 55121, 952-229-8200 or (800) 404-0204, www.ironwoodelectronics.com
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