This post explains for the Buffer Amplifier.
The Part Number is 104.
The function of this semiconductor is 0.1/2.5 GHz Si MMIC Buffer Amplifier.
The package is SOT323-6L (SC70) type.
Manufacturer: STMicroelectronics
Preview images :
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Description:
The 104 is MMIC Buffer Amplifier.
The STB7102, STB7103 and STB7104 designed for Mobile Phone applications (0.1/2.5GHz), are an
high isolation Si MMIC Buffer Amplifiers. Manufactured in the third generation of ST proprietary bipolar process, they offers an excellent isolation and a good linearity using a low current consumption.
These low current amplifiers operate on 3.0 V. The STB710x family is housed in an ultra miniature package SOT323-6L surface mount package. SOT323-6L dimensions are 1.15mmx1.8mm with 0.8 mm
thickness. […]
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Applications:
1. UHF BUFFER AMPLIFIER for Mobile Phone Application
Other data sheets are available within the file:
STB7102, STB7103, STB7104, 102, 103
104 Datasheet PDF
