This is  one Lot (Qty. 5) of New Sirenza Micro Device DC - 6.5GHz Cascadable GaAs HBT MMIC Amplifier, Part Number: SNA-486 in SOT-86 Package. Device Marking: S4.

General Specifications:

• Frequency Range: DC to 6.5GHz
• Gain: 13.9dB at 850MHz; 13.6dB at 1950MHz; 13.5dB at 2400MHz
• Bandwidth: 6.5GHz
• Noise Figure: 5.0dB at 1950MHz
• P1 dB: +17.5dBm at 1950MHz
• IP3: +30.9dB at 1950MHz
• In/Out VSWR: 1.7:1/1.6:1 (0.1-6GHz)
• Package: SOT-86

Detail Spec on Web as follows: