The MD1803DFX is manufactured using Diffused Collector in Planar Technology adopting new and enhanced high voltage structure. The new MD product series show improved silicon efficiency bringing updated performance to the Horizontal Deflection stage. https://elecena.pl/product/17493295/md1803dfx-high-voltage-npn-power-transistor-for-standard-definition-crt-display 2021-04-02 https://elecena.pl/product/17493295/md1803dfx-high-voltage-npn-power-transistor-for-standard-definition-crt-display 2021-05-20 https://elecena.pl/product/17493295/md1803dfx-high-voltage-npn-power-transistor-for-standard-definition-crt-display 2023-03-27 https://elecena.pl/product/17493295/md1803dfx-high-voltage-npn-power-transistor-for-standard-definition-crt-display 2023-08-20