The AF9438 from Werlatone Inc is a Low Pass RF Filter with Frequency 1 to 30 MHz, Stopband Frequency 50 to 380 MHz, Insertion Loss 0.5 dB, Rejection 45 dB, Upper Rejection 45 dB@50 to 380 MHz. Tags: Module with Connector, Reflectionless Filter. More details for AF9438 can be seen below.