| Abbreviation | Definition |
|---|---|
| BHE | Bangor Hydro Electric |
| BHEC | Black Hills Electric Cooperative |
| BHF | Buffered HydroFluoric (acid) |
| BHP | Butler Hybrid Phasing |
| BHPM | Butler Hybrid Phasing Matrix |
| BHT | Brinell Hardness Test |
| Bi | Bismuth |
| BI | Burn in |
| BICMOS | Bipolar Complementary Metal-Oxide Semiconductor |
| BICSEL | Bound states In Continuum Surface-Emitting Laser |
| BIESE | Beijing Institute of Electronic System Engineering |
| BIFET | Bipolar Field-Effect Transistor |
| BIL | Basic Impulse Level |
| BIM | Binary Intensity Mask |
| BIMOS | BI-polar Metal-Oxide Semiconductor |
| BIS | Building Industry Show |
| BIST | Built In Self Test |
| BITE | Built-In Test Equipment |
| BJT | Bipolar Junction Transistor |
| Bk | Berkelium |