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September 2017

Murata expands popular DC/DC converter range for embedded applications

murata has added a 12v model to its oki-78sr series of non-isolated switching regulator dc/dc power converters for embedded applications.


the fixed single output converter offers both tight regulation and high efficiency directly at the power usage site, and is a direct plug-in replacement for to-220 package 78xx series linear regulators.


rated at 12v/1a, when powered from a 24v source, the oki-78sr-12/1.0-w36-c converter’s efficiency is a very high 95%, eliminating the need for a heatsink that adds cost and increases complexity in the design and manufacturing processes.


cleverly packaged in the form of a three-terminal 78xx linear regulator, the converter operates from a source voltage of 15 to 36v and is available in both vertical and horizontal mounting options. the package size is just 10.4 x 7.62 x 16.5mm (0.41 x 0.3 x 0.65 inches).

murata’s oki-78sr series is suitable in a wide range of applications, including computing, networking, telecommunications, industrial, aerospace and rail. indeed, it is ideal for any application where the ambient temperature ranges from -40 to 85°c, which has a source/system voltage in the range of 15 to 36vdc, and where the output requirement is for 12v at 1a.  


standard features include a factory-set vout at 12vdc, short-circuit/over-current protection, ul/ej/iec 60950-1, second edition safety approvals and rohs compliance.  

the oki-78sr series incorporates advanced assembly techniques and the latest fixed switching frequency technology for power conversion available.


the optional packaging configurations, safety features, high reliability, state-of-the-art figures for efficiency, thermal management, dynamic load response, industry standard package and ocp protection features offer an unmatched level of performance.

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