MDK300SH5 power supply for 5 V LED displays
The Rong-Electric MDK300SH5 delivers +5 V DC to LED display loads, with a documented current range of 0–60 A and 300 W output rating. The linked manufacturer specification is V1.0, dated September 14, 2018. It identifies input undervoltage, output current limiting and short-circuit protection.
Technical specifications
| Parameter | Specification |
|---|---|
| Output power | 300 W |
| DC output | +5 V; 0–60 A |
| Output voltage range | 4.9–5.1 Vdc |
| Rated AC input | 200–240 Vac |
| Operating AC input range | 190–264 Vac |
| Input frequency | 47–63 Hz |
| Maximum input current | ≤4.0 A |
| Efficiency | ≥88.5% at 220 Vac, full load, room temperature |
| Regulation accuracy | ±2% |
| Ripple and noise | ≤150 mVp-p under the PDF’s measurement conditions |
| Operating temperature | −40 to +60°C; observe thermal installation and derating requirements |
| Cooling | Ventilation cooling |
| Dimensions | 185 × 55 × 30 mm; tolerance ±1.0 mm |
Cabinet cooling and input compatibility
For high-temperature full-load operation, the PDF requires a 300 × 300 × 3.0 mm heat-spreading plate in close contact with the supply. In a sealed enclosure, it requires the supply to contact the enclosure for heat dissipation. Follow the temperature curves and mounting instructions for the actual cabinet.
This is a 200–240 Vac rated-input model. Its stated 190–264 Vac operating range does not include 110 V mains. Do not substitute it for MDK300PC5 solely because the names or output ratings look similar.
Product images
Download specification
Rong-Electric MDK300SH5 High Efficiency Power Supply For LED Display Specification
Frequently asked questions
What are the MDK300SH5 output ratings?
The manufacturer lists +5 V DC, 0–60 A and 300 W, with a 4.9–5.1 Vdc output-voltage range.
Can MDK300SH5 run from 110 V AC?
No. Its rated input is 200–240 Vac and its specified operating range is 190–264 Vac.
What cooling is needed at high temperature?
The PDF calls for a 300 × 300 × 3.0 mm heat-spreading plate in close contact with the supply for high-temperature full-load operation. Follow the applicable derating curves.
Can it be installed in a sealed cabinet?
The specification requires close contact with the enclosure for heat dissipation when used in a sealed cabinet. Assess the cabinet’s internal temperature and load using the full thermal guidance.
What are the dimensions and where is the drawing?
The enclosure is specified at 185 × 55 × 30 mm, with ±1.0 mm tolerance. The original PDF linked above includes the mounting and connector drawings.
