Convert Attohenries to Femtohenries
Convert Attohenries (aH) to Femtohenries (fH) instantly and accurately.
Conversion Formula
fH = aH × 0.001
About Attohenries
The attohenry (aH) equals 10⁻¹⁸ H, the scale for parasitic inductances in on-chip metal interconnects and quantum-device bondwires. Metal traces in sub-10 nm CMOS processes have via-to-via inductances in the attohenry range; superconducting qubit junctions are modelled with loop inductances of tens to hundreds of attohenries; microwave integrated circuit (MMIC) vias at 100 GHz are characterised in aH. 1 aH = 10⁻³ fH = 10⁻¹⁸ H.
About Femtohenries
The femtohenry (fH) equals 10⁻¹⁵ H, the scale for PCB via inductances, short bondwires, and on-chip spiral inductor parasitics in millimetre-wave design. A 0.5 mm gold bondwire has about 0.5-1 fH inductance at mm-wave frequencies; differential pair stubs in 100 GHz SerDes are modelled in femtohenries; Josephson junction loop inductances in superconducting circuits are a few hundred fH. 1 fH = 10⁻³ pH = 10⁻¹⁵ H.
Quick Reference Table
| Attohenries (aH) | Femtohenries (fH) |
|---|---|
| 1 aH | 0.001 fH |
| 2 aH | 0.002 fH |
| 5 aH | 0.005 fH |
| 10 aH | 0.01 fH |
| 25 aH | 0.025 fH |
| 50 aH | 0.05 fH |
| 100 aH | 0.1 fH |