Resistividad Eléctrica

Acerca de Electric Resistivity Conversion

Electric resistivity (specific resistance) measures un/una material's inherent opposition un/una current flow—resistance normalized by geometry. It's un/una material property, independent of sample dimensions. While resistance depends on un/una object's size y shape, resistivity remains constant for un/una given material under fixed conditions. This distinction es crucial: un/una long thin copper wire has higher resistance than un/una short thick one, pero ambos have identical resistivity porque ellos're el/la mismo material. Resistivity habilita direct comparison of materials' electrical properties regardless of sample geometry.

El/La SI unidad es ohm metro (Ω·m). Resistivity spans un/una enormous range: desde 10⁻⁸ Ω·m for metals un/una 10¹⁶ Ω·m for good insulators—over 24 orders of magnitude, one of el/la widest property ranges in physics. Temperatura significantly affects resistivity: metals increase resistivity as temperature rises (due un/una increased lattice vibrations), while semiconductors typically decrease (mas charge carriers son thermally excited). It's el/la reciprocal of conductivity y esencial for electrical engineering, materials science, y semiconductor device design.

Our converter handles todo estandar electric resistivity unidades usado in wire sizing, material characterization, y electronic design.

Common Electric Resistivity Conversions

Electric Resistivity Unidad Reference

Ohm metro (Ω·m) – El/La SI unidad for resistivity, representing el/la resistance of un/una 1-metro cube medido entre opposite faces. While mathematically correct, Ω·m gives inconveniently small numeros for metals (copper es 1.68 × 10⁻⁸ Ω·m), asi que practico aplicaciones often usar derived unidades. El/La relationship R = ρL/Un/Una connects resistivity un/una physical resistance, donde L es length y Un/Una es cross-sectional area.

Ohm centimetro (Ω·cm) – El/La dominant unidad in semiconductor industry specifications. 1 Ω·cm = 0.01 Ω·m. Silicon wafer resistivity es almost always quoted in Ω·cm, ranging desde 0.001 Ω·cm (heavily doped) un/una 10,000 Ω·cm (high-purity intrinsic). Germanium specifications tambien usar Ω·cm. El/La centimetro scale matches typical wafer dimensions.

Microohm centimetro (μΩ·cm) – El/La practico unidad for metallic conductors donde resistivity es muy low. Copper ≈ 1.68 μΩ·cm; silver ≈ 1.59 μΩ·cm; aluminum ≈ 2.65 μΩ·cm; gold ≈ 2.44 μΩ·cm. 1 μΩ·cm = 10⁻⁸ Ω·m = 10⁻⁶ Ω·cm. Wire tablas y conductor specifications typically usar esto unidad.

Ohm square milimetro per metro (Ω·mm²/m) – El/La estandar wire industry unidad, directly relating un/una wire gauge calculos. Numerically es igual un/una μΩ·cm × 10 (asi que copper ≈ 17.2 Ω·mm²/m). Convenient porque wire cross-sections son typically specified in mm² y lengths in metros. Directly gives resistance: R = ρ × L, donde L es in metros y ρ es in Ω·mm²/m, yielding R in ohms for 1 mm² wire.

Nanoohm metro (nΩ·m) – 10⁻⁹ Ω·m. Sometimes usado for metals un/una avoid cientifico notation. Copper ≈ 16.8 nΩ·m. Less comun than μΩ·cm pero occasionally seen in physics literature.