News Release from: Rohm Electronics (UK)
Edited by the Electronicstalk Editorial Team on 8 January 2002
Transistor and diode together (again)
Rohm's new UML series of devices combines a general-purpose transistor and a Schottky barrier diode into a miniature UMT package.
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Rohm's new UML series of devices combines a general-purpose transistor and a Schottky barrier diode into a miniature UMT package. Like similar devices from International Rectifier, the company claims the new parts will help engineers to simplify the design and reduce the overall size of DC/DC conversion, motor driver and pre-amplification circuitry. Supplied in five-pin packages with dimensions of just 2.0 x 1.25 x 0.9mm, the new UML devices feature a transistor with a low collector-emitter saturation voltage and a diode with low forward voltage characteristics.
The transistor and diode are completely isolated from each other.
Typical devices in the new range are the Rohm UML4N and UML6N.
The UML4N features a transistor with a maximum collector current of -500mA and maximum collector-base and collector-emitter voltages of -15 and -12V, respectively.
The transistor integrated into the UML6N offers a maximum collector-base voltage of 15V and collector-emitter voltage of 12V.
In both cases the Schottky diode has a typical forward voltage of 0.4V and can handle a typical reverse current of 4uA.
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