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Component Learning

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Electronic components are basic electronic element or electronic parts usually packaged in a discrete form with two or more connecting leads or metallic pads. Electronic Components are intended to be connected together, usually by soldering to a printed circuit board (PCB), to create an electronic circuit with a particular function.

Community > Groups > Component Learning > Integrated Relay Driver Improves Control of Inductive Load
Integrated Relay Driver Improves Control of Inductive Load
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Markus Schmitz

The DRDC3105 integrates a complete solid-state relay driver into a single, surface-mount package, minimizing the PCB footprint, reducing component count and improving the reliability of inductive load control circuits. Providing a rugged interface between standard logic and 3V to 6V DC inductive loads, the relay driver is designed to handle relays, solenoids, incandescent lamps and small motors in a wide range of applications. From a 5V supply rail, the DRDC3105 can drive coils rated at up to 2.5W. Offered in single and dual driver configurations and housed respectively in SOT23 and SOT26 packages, the new driver can replace between three and six discrete components. With a Zener diode included across the device’s bipolar transistor output, the need for an external free-wheeling diode is removed, and by clamping at 6.6V the Zener also sinks inductive currents to ground, thereby reducing noise due to EMI. The DRDC3105 relay driver is priced at $0.09 each/10,000 for the single driver package and $0.15 each for the dual driver package
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