Silicon Germanium (SiGe)

Verifiedsemiconductor
· SiGe· Si1-xGex· Silicon Germanium

Silicon germanium (SiGe) is a semiconductor alloy combining 70% silicon and 30% germanium, engineered to bridge the bandgap and lattice properties of its constituent elements. This material is widely used in high-frequency analog and mixed-signal integrated circuits, particularly in RF amplifiers, satellite communications, and automotive radar systems, where it offers superior speed and noise performance compared to pure silicon while maintaining better integration compatibility than germanium alone. SiGe's strained-layer engineering enables higher charge carrier mobility than bulk silicon, making it the preferred choice for noise-critical applications and millimeter-wave circuits where cost-effectiveness and established silicon fabrication processes provide significant manufacturing advantages.

RF and microwave amplifiersSatellite communication systemsAutomotive radar sensorsHigh-speed analog ICsLow-noise receiver circuits5G and millimeter-wave communications

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Thermal Conductivity(k)
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BTU/(hr·ft·°F)——
Verified Unverified Low confidence (<80%) Link to source
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Density(ρ)
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lb/in³——
Verified Unverified Low confidence (<80%) Link to source
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Band Gap(Eg)
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eV——
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.