A new LGA socket, CBT-LGA-5019, addresses high-performance requirements for 1-mm pitch optical engine chips, self-contained electrical-to-optical transceiver units intended for computer interconnects. 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 is less than 1 dB at 23 GHz and capacitance is 0.097 pF. The current capacity of each contactor is 4 A. The socket temperature range is -55 to +180°C.
The socket also features an IC guide for precise LGA edge alignment. The specific configuration of 
the package to be tested in the CBT-LGA-5019 is LGA, 33×33-mm body size, 32×32 array and 1-mm pitch. To use, an operator drops an IC into the socket and attaches the heatsink lid by tightening four screws. Vertical force is applied by the integrated compression plate between the heat sink lid and the device. This socket can be used for device characterization, screening modules, and custom burn-in applications with the most stringent requirements.
CBT-LGA-5019 socket features a unique contact design with outside spring and flat-stamped plungers that provide a robust solution for burn-in & test applications including excellent electrical signal integrity to meet the requirements of today’s 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 be placed close to the device for impedance tuning. The heat sink socket lid incorporates a quick installation method so that ICs can be changed out quickly.
Pricing for the CBT-LGA-5019 is $1,523 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
