This post explains for the semiconductor BB139.
The Part Number is BB139.
The function of this semiconductor is Silicon Varicap Diode.
The package is DO-35 Type.
Manufacturers : ITT Components
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Absolute maximum ratings
1. Storage Temperature Range : – 55 ºC to + 150 ºC
2. Maximum Juction Operating Temperature : + 150 ºC
3. Load Temperature : + 260 ºC
4. Maximum Voltage : 30 V ( Working Inverse Voltage )
Application : VHF Tuner
