This power module is a power supply that can be directly mounted on a printed circuit board. It has the function of powering application-specific integrated circuits (), digital signal processors DSPs, microprocessors, memories, field-programmable gate arrays (FPGAs) and other digital or analog loads. Type: Voltage Regulator Model: Buck Converter Board Module Input Voltage: 5v-30v (must be higher than the output voltage) preferably lower than 28v. Output Voltage: 3.3v Output Current: 3a (maximum) Normal 1.61.8a with super plus heat dissipation Conversion Efficiency: 96% (maximum) Output Ripple: Less than 30mv Output Accuracy: 0.1v No-load Current: Less than 1ma Operating Temperature: -40-+85 Operating Humidity: 20%-90% PCB Layers: 2-layer Board Shutdown Function: Not Supported Cooling Method: Natural Cooling Installation Method: Wiring Is it Isolation: Without Isolation Production Process: Machine Labeling, Reflow Oven Design Aging Standard: 720 Hours without Failure Factory aging standard: 72 hours without fault Service life: 30,000 hours without fault (output current does not exceed the rated value) Inspection standard: (factory test + storage test) Output voltage: 3.3v Colour:P o Color Material:PCB Package Contents: 20 x Buck Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.