MLPF-WB55-02E3 Low Pass Filter STMicroelectronics MLPF-WB55-02E3 Low Pass Filter is a matched filter companion chip of STM32WB55Vx that integrates an impedance matching network and harmonics filter. This matching network is designed to maximize the RF performance of STM32WB55Vx. This low pass filter utilizes the STMicroelectronics IPD technology on the non-conducive glass substrate which optimizes RF performance. The MLPF-WB55-02E3 low pass filter features low insertion loss, high RF performance, LGA footprint compatibility, and ECOPACK2 compliant component. This low pass filter is ideal for use in Bluetooth 5, OpenThread, Zigbee®, and IEEE 802.15.4.