electrical insulating materials. Electrotechnical fiberglass. Scheme, description

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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electrical insulating materials. Electrotechnical fiberglass. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Electrical materials

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Electrotechnical fiberglass - laminated sheet pressed material consisting of two or more layers of glass cloth impregnated with a thermosetting resin, for example, epoxy and silicone. They make eight brands. Grades and properties of textolite are given in table. 1.6 and 1.7.

Table 1.6. Grades and application of fiberglass

Electrotechnical fiberglass

Table 1.7. Fiberglass

Electrotechnical fiberglass

Author: Koryakin-Chernyak S.L.

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Micron P400m Solid State Drives for Servers and Storage 01.02.2013

Micron Technology today introduced a new generation of SSDs for servers and storage. Given the scope, an important feature of the new SSDs, designated Micron P400m, the manufacturer calls high reliability. Available in 100, 200 and 400 GB models.

The drives use 25nm MLC NAND flash memory. The key to high reliability and maintaining high performance during operation is the use of proprietary XPERT technology (Extended Performance and Enhanced Reliability Technology), which optimizes the operation of the controller and memory using algorithms embedded in the "firmware" and hardware improvements. The manufacturer estimates that the drives have a write life of 1,75 PB for the 100 GB model, 3,5 PB for the 200 GB model, and 7,0 PB for the 400 GB model. This is approximately five years, provided that the entire volume is recorded ten times daily.

In terms of speed, the 100GB model shows write speeds of up to 210MB/s and read speeds of 350MB/s. For 200 and 400 GB drives, these figures are 350 and 300 MB / s. Performance on read operations in the case of a 100 GB model is 50 IOPS, on write operations - 000 IOPS. In the case of models with a capacity of 14 and 000 GB, the performance on read operations reaches 200 IOPS, on write operations - 400 and 55 IOPS.

2,5" drives are 7mm thick. They are equipped with a SATA 6 Gb / s interface.

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