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Murata Power Solutions Non-Isolated DC-DC Converter 36V dc Input, 3.3V Output, 1.5A Current, TO-220 OKI-78SR-3.3/1.5-W36H-C
Specifications
| Country of Origin | China |
|---|---|
| Brand | Murata Power Solutions |
| Power | 4.95W |
| Efficiency | 85.5% |
| Length | 10.4mm |
| Model | OKI-78SR-3.3/1.5-W36H-C |
| Depth | 16.5mm |
| Gross Weight | 2g |
| Width | 8.6mm |
| Series | OKI-78SR |
| Output Current | 1.5A |
| Maximum Operating Temperature | 85°C |
| Package Type | TO-220 |
| Load Regulation | ±0.4 % |
| Minimum Operating Temperature | -40°C |
| MTBF | 78700000h |
| Number of outputs | 1 |
| Ripple and Noise | 40mV Pk-Pk |
| Maximum Input Voltage | 36V dc |
| Fixed Output | 3.3 or 5V @ 1.5A or 12V @ 1.0A |
| Line Regulation | ±0.25 % |
| Standards/Approvals | RoHS |
| Minimum Input Voltage | 7V |
Key Features
- Compact TO-220 package designed for embedded applications.
- Fixed single output voltage options of 3.3V or 5V at 1.5A, and 12V at 1.0A.
- High efficiency of 85.5% reduces power loss and thermal load.
- Wide operating temperature range from -40°C to 85°C.
- Excellent line regulation of ±0.25% and load regulation of ±0.4% ensures steady output.
- Ripple and noise limited to 40mV peak-to-peak for signal integrity.
- No external components required for installation as a drop-in replacement for 78xx series regulators.
- Short circuit protection and outstanding thermal derating performance enhance reliability.
Product Description
Murata Power Solutions OKI-78SR-3.3/1.5-W36H-C is a non-isolated switching regulator DC-DC Converter designed mainly for embedded electronics requiring stable regulated voltages.
This converter accepts a wide input voltage range from 7V to 36V DC and provides fixed output voltages of 3.3V or 5V at 1.5A or 12V at 1.0A depending on the variant. It is fabricated in a compact TO-220 package measuring 10.4 mm length, 8.6 mm width, and 16.5 mm depth, weighing just 2 grams, enabling space-saving integration in power-sensitive industrial and electronic designs.
The device features excellent efficiency up to 85.5%, reducing heat generation without the need for additional heat sinks, ensuring high reliability and performance. It includes tight line regulation (±0.25%) and load regulation (±0.4%) specifications, maintaining stable voltage output under varying input and load conditions. Ripple and noise are kept low at 40mV peak-to-peak to preserve signal quality.
Its robust thermal capability allows operation from -40°C to 85°C, suitable for demanding industrial and commercial environments. The built-in short circuit protection and outstanding thermal derating enhance device durability and protect against fault conditions. The high MTBF rating of over 78 million hours confirms exceptional reliability for continuous use.
The OKI-78SR series converters serve as direct plug-in replacements for conventional 3-terminal 78xx linear regulators with no external components needed, simplifying PCB design and deployment. Their small footprint and choice of vertical or horizontal mounting options make them versatile for various industrial, laboratory, power supply, and electronic manufacturing applications.
Compact TO-220 SIP module packaging. Wide input voltage operation from 7V to 36V DC. Fixed output voltage options with up to 1.5A output current. High efficiency minimizes heat and power consumption. Robust protection features including short circuit protection.
Ideal for industrial electronics, power supplies, and embedded computing. For more products in the DC/DC converter category, explore EnvMart's extensive catalog of high-quality power management solutions and components.
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Frequently Asked Questions
The input voltage range for this model is from 7V to 36V DC.
This converter provides fixed output voltage options of 3.3V or 5V at 1.5A, and 12V at 1.0A depending on the variant selected.
The maximum output current for this unit is 1.5A.
It has an efficiency rating of 85.5%, which helps to minimize power loss and thermal load.
The dimensions of the TO-220 package are 10.4 mm in length, 8.6 mm in width, and 16.5 mm in depth.
The operating temperature range is from -40°C to 85°C, making it suitable for various environments.
Ripple and noise are limited to 40mV peak-to-peak, ensuring signal integrity.
It includes built-in short circuit protection and outstanding thermal derating performance to enhance reliability.
The weight of this model is just 2 grams, allowing for space-saving integration.
The line regulation is specified at ±0.25%, ensuring steady output under varying input conditions.
Yes, it serves as a direct plug-in replacement for conventional 3-terminal 78xx linear regulators with no external components needed.
This model complies with RoHS standards, indicating it meets environmental regulations.
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