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Semiconductor Equipment and Materials International (SEMI)

Achieve product interoperability in the worldwide electronics market

Semiconductor Equipment and Materials International (SEMI) publishes standards for equipment and materials used in the fabrication of semiconductor devices such as integrated circuits, transistors, diodes and thyristors. This collection guides manufacturers on the chemical and material processes involved in the manufacture of semiconductor chips and other related devices. SEMI standards assist you to:

  • Ensure international market position
  • Improve revenue stream
  • Minimize design risks

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Dec 17

Using a Laser Cutter for Paper Projects!

Lasers are pretty versatile—they’ll cut and engrave materials like wood, fabric, plastic, and glass. But we forget how popular they’ve become for cutting paper and cardstock, too. Click here to see a video of intricate paper cutting. Think about how intricate and detailed you can

Dec 17

Short Circuit Study

Hi every one, My distribution network is having 1 incomer source of 220 kv and 3 outgoing transformers of 220/33kV, 65 mva with Z= 14% with 7.5%. Source short circuit value is 50kA. I have done short circut calculation manually and with etap but my results are not matching. With etap SC current o

Dec 16

Gearbox Forward-vs-Reverse Efficiency: How Much Difference to Expect?

I have some design problems involving travel drive for loaded cars on a rail track to move at low speed using standard bevel-helical geared motors (0.18kW, ratio in the range 200:1 to 380:1). Variable frequency drive is used for gradual starting and stopping. During controlled deceleration there wi

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