Murata Power Solutions Non-Isolated DC-DC Converter, 12V dc Input, 5V dc Output, 1.5A

Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): CN
Product Details

Murata 1.5A Single Output Non-Isolated DC-DC Converter - OKI Series

The Murata PS OKI-78SR Series is built on a 10.4 by 16.5 mm, single inline package SIP module, these DC/DC converters are non-isolated switching regulator for embedded applications. Two nominal output voltages are offered, 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 short circuit current limit protection. The OKI-78SR switching regulator is designed to meet all standards approvals. RoHS-6 (no lead) hazardous material compliance is specified as standard.

Features & Benefits

Ultra wide 7 to 36 VDC input range
Fixed Outputs of 3.3 or 5 VDC up to 1.5 Amps
Vertical or horizontal 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

Murata Power Solutions Non-Isolated DC-DC Converter

The Murata Power Solutions Non-Isolated DC-DC converter is used for the embedded application. It has three nominal output voltage terminals and up to 1.5A is the maximum output. The ultra-wide input range of upto 12VDC. Based on fixed frequency the high efficiency means very low heat and low electrical noise requiring no external component. The fixed single output converters provide both tight regulation and high efficiency directly at power usage site and are direct plug-in instead of linear regulators hence no extra outside component is required

Features and Benefits

• High efficiency with no external components
• No heat sink direct replacement for 3-terminal
• Operating temperature is from -40°Cto 85°C
• Outstanding thermal derating performance
• Short circuit protection
• Vertical SIP or horizontal mount, small footprint, in an encapsulated package


• Control boxes
• Control boxes
• ITE commercials
• ITE commercials


• UL certified

Attribute Value
Input Voltage 12V dc
Output Voltage 5V dc
Number of Outputs 1
Output Current 1.5A
Power Rating 7.5W
Mounting Type Through Hole
Package TO-220
Minimum Temperature -40°C
Maximum Temperature +85°C
Efficiency 90.5%
MTBF 78700000h
Load Regulation ±0.4%
Line Regulation ±0.25%
Ripple And Noise 40mV Pk-Pk
Width 8.6mm
Length 10.4mm
Weight 2g
Protection Features Short Circuit Protection
Maximum Input Current 690mA
Depth 16.5mm
Allowed Circuit Configurations Parallel
Power Signal Conversion Type DC-DC
Switching Frequency Range 500kHz
Series OKI-78SR
Rated Output Power 7.5W
Available to back order for despatch 23/03/2020
Price Each (In a Box of 100)
Was £3.31
£ 3.09
(exc. VAT)
£ 3.71
(inc. VAT)
Per unit
Per Box*
100 +
*price indicative
Related Products
The BPM15 series offers high output current (up ...
The BPM15 series offers high output current (up to ±1.5 Amps) in a 1"x1” metal package requiring no heat sink for most applications. The BPM15 series delivers fixed DC output voltage up to 15 Watts for printed circuit board mounting. Wide range inputs of 9 to 36 Volts DC (24 ...
The Murata MGJ2 series of DC-DC converters is ...
The Murata MGJ2 series of DC-DC converters is ideal for powering high side and low side gate drive circuits in bridge circuits for IGBTs and Mosfets. These isolated DC-DC converters offer a choice of asymmetric output voltages allowing optimal drive levels for best system efficiency and EMI. The MGJ2 series ...
The Murata NCM6 series of DC/DC converters offers ...
The Murata NCM6 series of DC/DC converters offers single & dual output voltages from input voltage ranges of 4.5-9V and 9-36V and 18-75V. This isolated power converter is housed in an industry standard package with a standard pin-out. The DC/DC converter is encapsulated for superior thermal performance. Applications of the ...
The Recom R-78T series of DC-DC converters are ...
The Recom R-78T series of DC-DC converters are compact, low profile SMD switching regulators. They have 3 standard pinning options: AC, AL and FC.The R-78T series has a high efficiency of up to 95%, which means that these DC-DC converters do not require heatsinks or fans. The switching regulator can ...