Murata Power Solutions Through Hole Switching Regulator, 3.3V dc Output Voltage, 1.5A Output Current
- RS Stock No.:
- 7962141
- Mfr. Prt No.:
- OKI-78SR-3.3/1.5-W36-C
- Brand:
- Murata Power Solutions
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
EU Directives 2011/65/EU and 2015/863 restrict the use of the 10 substances below in the manufacture of specified types of electrical equipment.
Whilst this restriction does not legally apply to components, it is recognised that component “compliance” is relevant to many customers.
RS definition of RoHS Compliance:
- The product does not contain any of the restricted substances in concentrations and applications banned by the Directive,
- and for components, the product is capable of being worked on at the higher temperatures required by lead–free soldering
The restricted substances and maximum allowed concentrations in the homogenous material are, by weight:
| Substance | Concentration |
| Lead | 0.1% |
| Mercury | 0.1% |
| PBB (Polybrominated Biphenyls) | 0.1% |
| PBDE ( Polybrominated Diphenyl Ethers) | 0.1% |
| Hexavalent Chromium | 0.1% |
| Cadmium | 0.01% |
| DEHP (Bis (2-Ethylhexl) phthalate) | 0.1% |
| BBP (Benzyl butyl phthalate) | 0.1% |
| DBP (Dibutyl phthalate) | 0.1% |
| DIBP (Diisobutyl phthalate) | 0.1% |
The supplier of the item listed below has informed RS Components that the product is "RoHS Compliant".
RS Components has taken all reasonable steps to confirm this statement. Information relates only to products sold on or after the date of this certificate.
| RS stock number | 7962141 |
| Product description | Murata Power Solutions Through Hole Switching Regulator, 3.3V dc Output Voltage, 1.5A Output Current |
| Manufacturer / Brand | Murata Power Solutions |
| Manufacturer part number | OKI-78SR-3.3/1.5-W36-C |
RS Components Ltd, Birchington Road, Corby, Northants, NN17 9RS, UK
Statement of Conformity
This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.
| RS stock number | 7962141 |
| Product description | Murata Power Solutions Through Hole Switching Regulator, 3.3V dc Output Voltage, 1.5A Output Current |
| Manufacturer / Brand | Murata Power Solutions |
| Manufacturer part number | OKI-78SR-3.3/1.5-W36-C |
The foregoing information relates to product sold on, or after, the date shown below.
RS COMPONENTS
| Date | Nov 23, 2024 |
RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132
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.
APPROVALS : UL/EN/IEC 60950-1, 2nd Edition
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
Specifications
| Attribute | Value |
| Brand | Murata Power Solutions |
| Mounting Type | Through Hole |
| Line Regulation | ±0.25 % |
| Width | 16.5 mm |
| Depth | 7.6 mm |
| Minimum Temperature | -40 °C |
| Efficiency | 85.5 % |
| Weight | 2 g |
| Ripple And Noise | 40 mV Pk-Pk |
| Output Voltage | 3.3 V dc |
| MTBF | 78721000 h |
| Output Current | 1.5 A |
| Load Regulation | ±0.25 % |
| Number of Outputs | 1 |
| Maximum Temperature | +85 °C |
| Series | OKI-78SR |
| Package | SIP |
| Length | 10.4 mm |
| Power Rating | 4.95 W |
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