Ironwood Electronics recently introduced a new socket addressing high performance requirements for burn-in and test applications: SBT-BGA (ball grid array)-6048. The contactor is a stamped spring pin with 19 gram actuation force per ball and cycle life of 125,000 insertions.
The self inductance of the contactor is 0.93 NH with an insertion loss of less than 1 dB at 14.1 GHz and capacitance 
Source: Ironwood Electronics0.097 pF. The current capacity of each contactor is 4 amps at 80° C temperature rise. The socket temperature range is -55° C to 180° C and the device features a floating guide for precise ball to pin alignment and includes a removable compression plate.
The specific configuration of the package to be tested in the SBT-BGA-6048 is BGA or land grid array (LGA), 70 mm x 70 mm body size, 1.27 mm pitch and 54 x 54 ball array. To use, drop the IC into the socket, place the compression plate, swivel the lid and apply down force using center compression screw (recommended torque specified in the datasheet). When using with BGA, removable ball guide needs to be placed over the pin array. When testing LGA, ball guide is not needed and should be removed. This socket can be used for hand test and quick turn custom burn-in applications with the most stringent requirements.
Pricing for the SBT-BGA-6048 is $3,090 with reduced pricing available depending on quantity required.
