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Okami™ OKI-78SR Series DC-DC Converters
-Fixed Output 1.5 Amp
-SIP module
-Ultra wide 7 to 36 VDC input range


- Features -
  • Ultra wide 7 to 36 VDC input range
  • Fixed Outputs of 3.3 or 5 VDC up to 1.5 Amps
  • Vertical SIP-mount, small footprint package
  • "No heat sink" direct replacement for 3-terminal 78xx-series linear regulators
  • High efficiency with no external components
  • Short circuit protection
  • Outstanding thermal derating performance
  • UL/EN/IEC 60950-1, 2nd Edition safety approvals (pending)



The Murata Power Solutions Okami™ OKI-78SR Series 1.5Amp DC/DC Converters are fixed output SIP converters fabricated on a 0.41" x 0.65" (10.4mm x 16.5mm) module. These non-isolated switching regulator ( SR ) DC/DC power converters are for embedded applications. The OKI-78SR Series offers both tight regulation and high efficiency directly at the power usage site and are a direct plug-in replacement for TO-220 package 78xx series linear regulators. Typically, no extra outside components are required. The Murata Power Solutions Okami™ OKI-78SR Series 1.5Amp DC/DC Converters feature an ultra wide 7 - 36 VDC input range.

Two nominal output voltages are offered (3.3 and 5 VDC), each with 1.5 Amp maximum output. Based on fixed-frequency buck switching topology, the high efficiency means very low heat and little electrical noise, requiring no external components. The ultra wide input range is 7 to 36 Volts DC.

Protection features include input undervoltage and short circuit protection, overcurrent and over temperature shut down. The OKI-78SR is designed to meet UL/EN/IEC 60950-1, 2nd Edition safety approvals. RoHS-6 (no lead) hazardous material compliance is specified as standard.


OKI -78SR Series now available in horizontal mount.









580-OKI78SR3.31.536C 580-OKI78SR5/1.5W36C
  • Murata Power Solutions
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