Circuit World - Emerald - Quarterly - Vol. 46, No. 2, 2020 The purpose of this paper is to present and discuss the results of measurements illustrating influence of the area of a thermal pad and the kind of the used base on thermal and optical parameters of LED modules. ISSN: 0305-6120 Subjects--Topical Terms: LC Class. No.: https://www.emerald.com/insight/publication/issn/0305-6120/vol/46/iss/2