This post explains for the diode BB-139.
The function of this semiconductor is 30V, Silicon Varicap Diode.
The package is DO-35 Type.
Manufacturer: Fairchild, ITT Components
See the preview image and the PDF file for more information.
1 page
Description
BB139 is 30V, VHF / FM Varactor Diode. Variable capacitance diode is a type of diode that exhibits a variable capacitance when a voltage is applied across it. It is also known as a voltage-variable capacitor or tuning diode. Varicap diodes are primarily used in electronic circuits for tuning and frequency modulation in applications such as radio receivers, television tuners, and voltage-controlled oscillators.
BB139 pinout
Absolute maximum ratings :
0. Maximum Voltage : 30 V ( Working Inverse Voltage )
1. Storage Temperature Range : – 55 °C to + 150 °C
2. Maximum Junction Operating Temperature : + 150 °C
3. Load Temperature : + 260 °C
Application:
1. VHF Tuner
BB139 PDF Datasheet
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