Diotec‘s Miniaturized SMD Components Make Model Railways Performing Almost Close to Reality
In 1862, the British company Myers offered steam locomotive models in its catalogue for the first time. Later on, electrically driven types entered children bedrooms, starting and stopping in a quite rough, "unnatural" way. Nowadays, even whole families spend afternoons with the small, detailed coloured model railways, which are fully digital controlled. This allows behaviours extremely close to reality, in terms of realistic, "slow" acceleration and deceleration.
Thanks to miniaturized SMD components like DIOTEC's bridge rectifier MYS80, the superfast diode EGL1D and dual MOSFET MMBT7002DW, such digital drives can be built even on the smallest scale. The MYS80 measures just 3mm x 3mm and offers anyway an output current of up to 500mA at maximum 80Vrms input voltage. An ideal free-wheeling diode for the PWM controlled DC drive is the EGL1D with 1A, 200V and trr < 50ns. Two MOSFETs in a single SOT-363 package allow to build a halfbridge at smallest board space requirement. The MMBT7002DW offers 60V of Drain to Source voltage, a peak drain current of 800mA, maximum RDSon of 7.5Ohm and allow for control by digital/logic level drivers.
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