TAV1-331+ 50Ω Ultra-Low-Noise D-PHEMT Transistor Mini-Circuits TAV1-331+ 50Ω Ultra-Low-Noise D-PHEMT Transistor is an MMIC D-PHEMT transistor with an operating frequency range from 10MHz to 4000MHz. The TAV1-331+ combines high gain with an extremely low noise figure, resulting in lower overall system noise. Low NF and IP3 performance make the component an ideal choice for sensitive receivers in communications systems. Manufactured using highly repeatable D-PHEMT technology, the unit comes housed in a tiny 1.4mm x 1.2mm MCLP package. This transistor requires external biasing and matching. The Mini-Circuits TAV1-331+ Ultra-Low-Noise D-PHEMT Transistor covers many wireless communications bands including cellular, ISM, GSM, WCDMA, WiMax, WLAN, and more.