Murata Power Solutions Through Hole Non-Isolated DC-DC Converter, 3.3V dc Output Voltage, 12V dc Input Voltage, 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

Attribute Value
Input Voltage 12V dc
Output Voltage 3.3V dc
Number of Outputs 1
Output Current 1.5A
Power Rating 4.95W
Mounting Type Through Hole
Package TO-220
Minimum Temperature -40°C
Maximum Temperature +85°C
Efficiency 85.5%
MTBF 78700000h
Load Regulation ±0.4%
Line Regulation ±0.25%
Ripple And Noise 40mV Pk-Pk
Protection Features Short Circuit Protection
Depth 16.5mm
Width 8.6mm
Maximum Input Current 480mA
Allowed Circuit Configurations Parallel
Length 10.4mm
Series OKI-78SR
Power Signal Conversion Type DC-DC
Rated Output Power 4.95W
Switching Frequency Range 500kHz
Weight 2g
Available to back order for despatch 14/07/2020
Price 1 Reel of 360
£ 852.38
(exc. VAT)
£ 1,022.86
(inc. VAT)
Per Reel
Per unit*
1 +
*price indicative
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