BLF278 VHF push-pull power MOS transistor Rev. 5 1 September 2015 Product data sheet IMPORTANT NOTICE Dear customer, As of December 7th, 2015 BL RF Power of NXP Semiconductors will operate as an independent company under the new trade name Ampleon, which will be used in future data sheets together with new contact details. In data sheets, where the previous Philips references is mentioned, please use the new links as shown below. Philips Semiconductors Product Specication VHF push-pull power MOS transistor BLF278 FEATURES PINNING - SOT262A1 High power gain PIN DESCRIPTION Easy power control 1 drain 1 Good thermal stability 2 drain 2 Gold metallization ensures excellent reliability. 3 gate 1 4 gate 2 APPLICATIONS 5 source Broadcast transmitters in the VHF frequency range. DESCRIPTION Dual push-pull silicon N-channel enhancement mode 12 vertical D-MOS transistor encapsulated in a 4-lead, SOT262A1 balanced flange package with two ceramic d caps. The mounting flange provides the common source g s connection for the transistors. g d 55 CAUTION 34 MAM098 Top view This product is supplied in anti-static packing to prevent damage caused by electrostatic discharge during transport and handling. For further information, refer to Philips specs.: SNW-EQ-608, SNW-FQ-302A, and Fig.1 Simplified outline and symbol. SNW-FQ-302B. QUICK REFERENCE DATA RF performance at T =25 C in a push-pull common source test circuit. h f V P G DS L p D MODE OF OPERATION (MHz) (V) (W) (dB) (%) CW, class-B 108 50 300 >20 >60 CW, class-C 108 50 300 typ. 18 typ. 80 CW, class-AB 225 50 250 >14 >50 typ. 16 typ. 55 WARNING Product and environmental safety - toxic materials This product contains beryllium oxide. The product is entirely safe provided that the BeO discs are not damaged. All persons who handle, use or dispose of this product should be aware of its nature and of the necessary safety precautions. After use, dispose of as chemical or special waste according to the regulations applying at the location of the user. It must never be thrown out with the general or domestic waste. 2003 Sep 19 2