40GHz Bandwidth Socket Targets QFN40 Package
Ironwood Electronics has introduced a high performance elastomer socket for the 0.4mm pitch QFN package. The CG25-QFN-2003 socket is designed for a 5mmx5mm package size and operates at bandwidths up to 40GHz with <1dB of insertion loss (GSSG configuration). The contact resistance is typically 20 mΩ per pin. Network analyzer reflection measurements for the G-S-S-G case were taken with all except the pins under consideration terminated into 50Ω. The socket is mounted using supplied hardware on the target PCB with no soldering, and it uses a very small footprint. The small footprint allows inductors, resistors and decoupling capacitors to be placed very close to the device for impedance tuning. The socket also incorporates an integrated compression plate inside the clamshell socket lid so that ICs can be changed out quickly.