The 6MB/E-510/U250-S5A from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 361 to 659 MHz, Bandwidth 298 MHz (1dB), Center Frequency 510 MHz, Insertion Loss 0.6 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 6MB/E-510/U250-S5A can be seen below.