Silicon Carbide (SiC)

Verifiedsemiconductor
· SiC· Silicon Carbide· 4H-SiC· Carborundum

Silicon carbide (SiC) is a ceramic compound combining silicon and carbon in a 1:1 ratio, engineered as a wide-bandgap semiconductor with exceptional hardness and thermal stability. It is widely deployed in high-temperature power electronics (MOSFETs and Schottky diodes), abrasive applications, refractories for furnace linings, and emerging automotive/renewable energy inverters where its superior thermal conductivity and thermal shock resistance outperform traditional silicon. Engineers select SiC over conventional semiconductors when operating environments exceed 200°C or when high switching frequencies and power density are critical, though cost and manufacturing maturity remain considerations relative to established Si technology.

High-temperature power electronicsElectric vehicle invertersIndustrial furnace liningsAbrasive grinding wheelsFast-switching RF/microwave devicesRenewable energy converters

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
Property OverviewNormalized to typical max values
PropertyValueUnitConditionsSource
Hardness (Vickers)(HV)
2,600
HV—
Poisson's Ratio(ν)
0.2100
-—
Young's Modulus(E)
59,465.5
ksi—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Melting Point / Solidus(Tm)
5,119.9
°F—
Specific Heat Capacity(Cp)
0.1648
BTU/(lb·°F)—
Thermal Conductivity(k)
213.8
BTU/(hr·ft·°F)—
Thermal Conductivity vs Temperature(k(T))
Curve (7 pts)
BTU/(hr·ft·°F)—
Coefficient of Thermal Expansion(α (CTE))
2.222
µin/in·°F—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
0.1160
lb/in³—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)
3.260
eV—
Dielectric Constant (Relative Permittivity)(εr)
9.700
-—
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Export Control

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.