Movatterモバイル変換

16 Nov 2004 - 23 Nov 2019

Mar	APR	May
	26
2015	2016	2017

success

fail

About this capture

COLLECTED BY

Organization:Internet Archive

The Internet Archive discovers and captures web pages through many different web crawls.At any given time several distinct crawls are running, some for months, and some every day or longer.View the web archive through theWayback Machine.

Collection:Wide Crawl Number 14 - Started Mar 4th, 2016 - Ended Sep 15th, 2016

The seed for Wide00014 was:

- Slash pages from every domain on the web:

-- a list of domains using Survey crawl seeds

-- a list of domains using Wide00012 web graph

-- a list of domains using Wide00013 web graph

- Top ranked pages (up to a max of 100) from every linked-to domain using the Wide00012 inter-domain navigational link graph

-- a ranking of all URLs that have more than one incoming inter-domain link (rank was determined by number of incoming links using Wide00012 inter domain links)

-- up to a maximum of 100 most highly ranked URLs per domain

The seed list contains a total of 431,055,452 URLs
The seed list was further filtered to exclude known porn, and link farm, domains
The modified seed list contains a total of 428M URLs

TIMESTAMPS

It is possible to determine details about a transistor from its part number. There are three systems that are in operation, namely the European based Pro-electron system, the American based JEDEC system and the Japanese JIS system.

1^st Letter - specifies the semiconductor material	2^nd Letter - specifies the type of device	Serial number
A Germanium B Silicon C Gallium Arsenide R Compound Materials	A Diode, low power or signal B Diode, variable capacitance C Transistor, audio frequency low power D Transistor, audio frequency power E Diode, tunnel F Transistor, high frequency low power G Miscellaneous devices H Diode, sensitive to magnetism L Transistor, high frequency power N Photocoupler P Light detector Q Light emitter R Switching device, low power e.g. thyristor, diac, unijunction etc S Transistor, low power switching T Switching device power, e.g. thyristor, triac, etc. U Transistor, switching power W Surface acoustic wave device X Diode, multiplier, e.g. varactor Y Diode, rectifying Z Diode, voltage reference	The characters following the first two letters form the serial number for the device type. Those intended for domestic use have a three-figure number (100 - 999), those intended for commercial use normally have one letter and two figures (A10 - Z99)

	2		Suffix Optional
1 Diodes 2 Bipolar transistors 3 FET devices 4 OptoCoupler 5 OptoCoupler	N	Serial number of component yields no indication of function or spec. Since this is a serial number may provide insight into date.	A = low gain B = medium gain C = high gain

	2^nd Letters		Suffix Optional
	SA: PNP HF transistor SB: PNP AF transistor SC: NPN HF transistor SD: NPN AF transistor SE: Diodes SF: Thyristors SG: Gunn devices SH: UJT SJ: P-channel FET/MOSFET SK: N-channel FET/MOSFET SM: Triac SQ: LED SR: Rectifier SS: Signal diodes ST: Avalanche diodes SV: Varicaps SZ: Zener diodes	Serial number of component yields no indication of function or spec. Since this is a serial number may provide insight into date.	Suffix indicates that the type is approved for use by various Japanese organisations