IMPORTANT NOTICE

Dear customer,

As from October 1st, 2006 Philips Semiconductors has a new trade name

- NXP Semiconductors, which will be used in future data sheets together with new contact

details.

In data sheets where the previous Philips references remain, please use the new links as

shown below.

http://www.philips.semiconductors.com use http://www.nxp.com

http://www.semiconductors.philips.com use http://www.nxp.com (Internet)

sales.addresses@www.semiconductors.philips.com use salesaddresses@nxp.com

(email)

The copyright notice at the bottom of each page (or elsewhere in the document,

depending on the version)

- © Koninklijke Philips Electronics N.V. (year). All rights reserved -

is replaced with:

- © NXP B.V. (year). All rights reserved. -

If you have any questions related to the data sheet, please contact our nearest sales

office via e-mail or phone (details via salesaddresses@nxp.com). Thank you for your

cooperation and understanding,

NXP Semiconductors

BFQ591

NPN 7 GHz wideband transistor

Rev. 04 — 2 October 2007

Product data sheet