Ironwood Electronics recently introduced a new quad flat no lead (QFN) socket addressing high performance requirements of the very thin QFN-cross bar technology (CBT)-QFN-7077.
The contactor is a stamped spring pin with 31 g actuation force per pin and cycle life of 125,000 insertions. The self inductance of the contactor is 0.88 nH, insertion loss of less than 1 dB at 15.7 GHz and capacitance 0.097 pF. The current capacity of each contactor is 4 A and the socket temperature range is -55° C to 180° C.
The socket also features an integrated circuit (IC) guide for precise QFN edge alignment. The specific 
Source: Ironwood Electronicsconfiguration of the package to be tested in the CBT-QFN-7077 is QFN, 7 mm x 7 mm body size and 0.5 mm pitch. To use, drop the IC into the socket, close the clamshell lid by latching. Vertical force is applied by the integrated compression springs between the socket lid and compression plate. This socket can be used for hand test, screening devices and custom burn-in applications with the most stringent requirements.
The CBT-QFN-7077 socket has a unique 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 today’s demanding analog, digital, radio frequency, Bluetooth and medical device applications. The socket is mounted using supplied hardware on the target printed circuit board with no soldering and uses the smallest footprint in the industry, allowing inductors, resistors and decoupling capacitors to be placed very close to the device for impedance tuning. The clamshell socket lid incorporates a quick installation method using the latch so that ICs can be changed out quickly.
These socket product lines have been designed to the JEDEC standard and are available for all standard configurations. Custom designs are also available.
