J300V5.0A4 LED screen power supply
The G-Energy J300V5.0A4 is a 300W LED display power supply with a 5.0V DC output and a 0–60A output current range. Its synchronous rectification design is described in the original specification. For energy-efficiency comparisons, use the stated efficiency and test conditions rather than an assumed percentage saving.
Technical specifications
The table below transcribes the linked J300V5.0A4 specification, version V1.0 dated 2019/09/05.
| Parameter | Specification |
|---|---|
| Output power | 300W |
| Rated output voltage | 5.0Vdc |
| Output current range | 0–60A |
| Input range in main specification table | 180–264Vac |
| Nominal input voltage | 200–240Vac |
| Input frequency | 50–60Hz |
| Efficiency | ≥86% at 220Vac input, 25°C, full load |
| Power factor | ≥0.5 at 220Vac, full load |
| Voltage stability accuracy | ±5% |
| Working temperature | −30°C to 50°C; refer to temperature/load curve |
| Cooling method | Natural cooling |
| Dimensions (L × W × H) | 190 × 82 × 30 ±0.5 mm |
| Auxiliary aluminum plate (L × W × H) | 315 × 200 × 3 mm |
| Protection functions | Input undervoltage, output current limiting and output short circuit |
Replacement checks
Compare the complete model number, input supply, required output and mounting arrangement with the existing unit. Follow the PDF’s installation and cooling instructions. Contact us with the label and application details for replacement identification.
Original specification images, photos and PDF
Download Specification:
G-ENERGY J300V5.0A4 power supply Specification
Frequently Asked Questions
What output does the J300V5.0A4 provide?
The linked specification lists 5.0V DC, an output current range of 0–60A and 300W output power.
What is the rated efficiency?
The specification gives ≥86% at 220Vac input, 25°C and full load. This is an efficiency value under stated test conditions, not a guaranteed energy-saving percentage for every installation.
Is it suitable for 110V AC input?
110V is outside the PDF’s 180–264Vac main input range and its 200–240Vac nominal input range. Verify the label and installation requirements before connecting power.
What are the dimensions and cooling requirements?
The enclosure is 190 × 82 × 30 ±0.5 mm. The PDF specifies natural cooling and an external 315 × 200 × 3 mm aluminum plate for auxiliary heat dissipation.
Where are the product images and datasheet?
The original specification images, product photos and PDF download are retained above. Use the full J300V5.0A4 model number to check that the document matches the supplied unit.
