Ironwood Electronics (Burnsville, MN) offers a BGA socket for 1.118 mm pitch, 729 pin BGA IC’s. The SG-BGA-6345 socket is designed for 31 × 31 mm package size and operates at bandwidths up to 8 GHz with less than 1 dB of insertion loss. They are designed to dissipate up to several watts without extra heat sinking and can handle up to 100 watts with custom heat sink. The contact resistance is typically 20 milliohms per pin. The socket connects all pins with 8 GHz bandwidth on all connections. It is mounted on the target PCB with no soldering, and is constructed with shoulder screw and swivel lid which incorporates a quick insertion method so that ICs can be changed out quickly. The temperature range is -35 °C to 100 °C. The pin self inductance is 0.15 nH and mutual inductance is 0.025 nH. Capacitance to ground is 0.01 pF. Current capacity is 2 amps per pin.
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