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Description
Mean Well - 50W Single Ouput DC - DC Converter - 12VDCRobust & Reliable Power Conversion for Demanding Applications Experience stable and efficient power conversion with the Mean Well SD 50B 12, a high performance 50W enclosed DC DC converter. Designed for industrial grade applications, this unit reliably steps down a wide 19 36V DC input to a steady 12V DC output, making it perfect for battery backup systems, transportation vehicles, and industrial automation. Its robust metal chassis and built in EMI
Robust & Reliable Power Conversion for Demanding Applications
Experience stable and efficient power conversion with the Mean Well SD-50B-12, a high-performance 50W enclosed DC-DC converter. Designed for industrial-grade applications, this unit reliably steps down a wide 19-36V DC input to a steady 12V DC output, making it perfect for battery backup systems, transportation vehicles, and industrial automation. Its robust metal chassis and built-in EMI filter ensure low noise and dependable operation in challenging environments.
Core Features & Benefits
- Wide 2:1 Input Range: Accepts an input voltage from 19V to 36V DC, providing flexibility for various power sources.
- Stable 12V Output: Delivers a regulated 12V DC output with a 4.2A current capacity, ideal for sensitive electronics.
- Comprehensive Protection: Features integrated protection against short circuits, overload (105-150%), and over-voltage, safeguarding your connected devices.
- High-Integrity Isolation: 1500VAC I/O isolation enhances safety by preventing ground loops and reducing electrical noise.
- Built for Reliability: With a fixed switching frequency at 83kHz and a 100% full load burn-in test, this converter is built for long-term, maintenance-free operation.
- Certified & Compliant: Meets rigorous standards for safety and electromagnetic compatibility, ensuring seamless integration.
Technical Specifications
| Output Specifications | |
|---|---|
| DC Voltage | 12V |
| Rated Current | 4.2A |
| Rated Power | 50.4W |
| Ripple & Noise (max.) | 100mVp-p |
| Voltage Adj. Range | 11.4 ~ 13.2V |
| Input Specifications | |
| Voltage Range | 19 ~ 36VDC |
| Efficiency (Typ.) | 75% |
| Protection | |
| Overload | 105 ~ 150% rated output power. Hiccup mode, auto-recovers. |
| Over Voltage | 13.8 ~ 16.2V. Shut down o/p voltage, re-power on to recover. |
| Short Circuit | Hiccup mode, recovers automatically after fault condition is removed. |
| Environment & Physical | |
| Operating Temperature | -10 ~ +60°C (Refer to derating curve) |
| Dimensions (L x W x H) | 159 x 97 x 38 mm |
| Weight | 0.43 kg |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Beautiful shelves
Color: B. Rustic Brown - Americana Farmhouse Style, Number Of Shelves: 2, Size: 22.5inches
Great quality shelves, have them in 4 rooms, they are easy to hang up and lightweight, look really nice and keeps room looking organized and clean.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
★★★★★ 5
Perfect for a coffee bar
Color: B. Rustic Brown - Americana Farmhouse Style, Number Of Shelves: 3, Size: 15.7inches, Color: B. Rustic Brown - Americana Farmhouse Style, Number Of Shelves: 3, Size: 15.7inches
These are great for my coffee bar! These shelves are easy to install and came with all the hardware needed. What a great value for your money, especially when you get 3 of these cute shelves. I love how they help organize my coffee bar area and the size fits perfectly.
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Reviewed in the United States on May 26, 2026
★★★★★ 4
If the set screws were white the shelves would be perfect.
Color: C. White - Modern Minimalist Style, Number Of Shelves: 3, Size: 15.7inches
I'd give 4 1/2 if there was one. The shelves thwmself are nice I just don't like the visible little black set screws. The shelves themself look great and are not wobbly at all if you install correctly. I purposely installed the bracket upside down because of the little black setting screws; I didnt want them showing because the shelves are above eye level and the screws are black and I didn't want them showing. But that made the shelf lean amd wobbly so I turned them back over the way they are supposed to be and that made them level and sturdy. I guess I'll paint the little screws.
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Reviewed in the United States on January 21, 2026
★★★★★ 5
Perfect for a coffee bar
Size: 16inch, Color: 1 Set, Size: 16inch, Color: 1 Set
Cute cofffee bar shelf! Perfect size and sturdy
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Reviewed in the United States on March 15, 2026
★★★★★ 5
Great shelves with basket storage
Size: 16inch, Color: 2 Sets, Size: 16inch, Color: 2 Sets
I was looking for shelves that had storage and these have by far exceeded my expectations. I love them! They came well packaged with everything needed to hang them up. It took us less than 5 mins to hang them. They are sturdy and stable. I definitely would recommend this product. We have them hung on the wall above our coffee bar.
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Reviewed in the United States on October 29, 2025
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