Issue A.1

04/07

Page 5 of 4

OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.

OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006

Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com

Issue

Change Description

Approval

Date

1.0

Initial Release

J. Haynie

07/29/05

1.1

On page 2, changed 50% power angle from 120 to 60 degrees.

J. Haynie

08/31/05

A

Added warning symbols on page 1. Added new company

disclaimer and footer. Added new logo and email.

04/24/06

A.1

Corrected typical intensity and added typical flux, page 1. Corrected

typical intensity, added typical flux, and replaced binning graph,

page 2. Replaced graph of relative luminous intensity vs wavelength

and graph of spatial distribution, page 3

J. Haynie

04/30/07

Red Top-View SMD LED with Domed Lens

OVSASBLCR8