| V-POL | vertical polarization | -- |
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| VBR | breakdown voltage | Usually refers to gate-drain breakdown in a FET. |
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| VCA | voltage controlled attenuator | The same thing as a VVA. |
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| VCO | voltage-controlled oscillator | -- |
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| VCXO | voltage-controlled crystal oscillator | -- |
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| VD | drain voltage | Not a sexually transmitted disease in this case, you pervert. |
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| VFM | variable frequency microwave | A new and improved way to use microwaves to heat material, such as in semiconductor processing. |
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| VGA | variable gain amplifier | -- |
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| VNA | vector network analyzer | -- |
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| VPE | vapor-phase epitaxy | A method of growing semiconductors on a substrate. |
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| VPIN | vertical PIN diode | Used to make low-loss switches monolithically. |
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| VPO | pinch-off voltage | The gate-source voltage at which a FET's channel is fully depleted and electrical current between drain and source is prevented. |
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| VRM | voltage regulator module | digitally programmable buck convertor |
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| VSAT | very small aperture terminal | -- |
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| VSWR | voltage standing wave ratio | See SWR. |
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| VVA | voltage-variable attenuator | -- |
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