As a courtesy to customers, on this page you can find PDF versions of some of the technical literature for these products. The 4145A was discontinued on March 1, 1986 and became obsolete on November 1, 1993. The 4145B was discontinued in November 1, 1994 and became obsolete on November 1, 1999. The 4155C Semiconductor Parameter Analyzer and 4156C Precision Semiconductor Parameter Analyzer replace the 4145A/B. Please refer to the web pages for these products for more information.

Note: Discontinued means that the product is no longer sold, while obsolete means that the product is no longer supported. Keysight Technologies normally supports products for a minimum of 5 years after discontinuance.

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