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Factory best selling Laboratory - FZ NTD Silicon Wafer – WMC


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As a market leading supplier of NTD silicon for promising power applications, and following the growing demands for top quality level wafers, superior FZ NTD silicon wafer at Western Minmetals (SC) Corporation can be offered to our customers worldwide in various size ranging from 2″, 3″, 4″, 5″ and 6″ diameter (50mm, 75mm, 100mm, 125mm and 150mm) and wide range of resistivity 5 ohm-cm to 2000 ohm-cm in <1-1-1>, <1-1-0>, <1-0-0> orientations with as-cut, lapped, etched and polished surface finish in package of foam box or cassette, or as customized specification to the perfect solution.

No. Items Standard Specification
1 Size 2″ 3″ 4″ 5″ 6″
2 Diameter 50.8±0.3 76.2±0.3 100±0.5 125±0.5 150±0.5
3 Conductivity n-type n-type n-type n-type n-type
4 Orientation <100>,  <111>, <110>
5 Thickness μm 279, 381, 425, 525, 575, 625, 675, 725 or as required
6 Resistivity Ω-cm 36-44, 44-52, 90-110, 100-250, 200-400 or as required
7 RRV max 8%, 10%, 12%
8 TTV μm max 10 10 10 10 10
9 Bow/Warp μm max 30 30 30 30 30
10 Carrier Lifetime μs >200, >300, >400  or as required
11 Surface Finish As-cut,Lapped,Polished
12 Packing Foam box inside, carton box outside.
Symbol Si
Atomic Number 14
Atomic Weight 28.09
Element Category Metalloid
Group, Period, Block 14, 3, P
Crystal structure Diamond
Color Dark gray
Melting Point 1414°C, 2577.2°F, 1687.15 K
Boiling Point 3265°C, 5909°F, 3538.15 K
Density at 300K 2.329 g/cm3
Intrinsic resistivity 3.2E5 Ω-cm
CAS Number 7440-21-3
EC Number 231-130-8

FZ-NTD Silicon Wafer is a paramount importance for applications in high power, detector technologies and in semiconductor devices that have to work in extreme conditions or where low resistivity variation across the wafer is required, such as gate-turn-off thyristor GTO, static induction thyristor SITH, giant transistor GTR, insulate-gate bipolar transistor IGBT, extra HV diode PIN. FZ NTD n-type silicon wafer is also as main functional material for various frequency converters, rectifiers, large-power control elements, new power electronic devices, photoelectronic devices, silicon rectifier SR, silicon control SCR, and optical components such as lenses and windows for terahertz applications.

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  • Sample Available Upon Request
  • Safety Delivery of Goods By Courier/Air/Sea
  • COA/COC Quality Management
  • Secure & Convenient Packing
  • UN Standard Packing Available Upon Request
  • Quality Inspection Including XRD/SEM/ICP/GDMS…
  • Full Scope of Trade Terms CPT/CIP/FOB/CFR By Incoterms 2010
  • Flexible Payment Terms T/T D/P L/C Acceptable
  • Full Dimensional After-Sale Services
  • ISO9001:2015 Certified
  • Rohs & REACH Regulations Approval
  • Non-Disclosure Agreements
  • Non-Conflict Mineral Policy
  • Regular Environmental Management Review
  • Social Responsibility Fulfillment
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