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Description
Mean Well - 200W Single Output DC-DC Converter, INPUT: 19-36VDC (10.4Amp), OUTPUT: 48VDC (4.2Amp)Robust & Reliable 200W DC DC Power Conversion Engineered for performance and reliability, the Mean Well SD 200B 48 is a high efficiency, 200W enclosed type DC DC converter. This unit expertly converts a 24V DC input (ranging from 19 36VDC) into a stable, regulated 48V DC output, making it an ideal step up or 'boost' converter for demanding industrial applications. Built with the quality Mean Well is known for, this converter ensures consistent power
Robust & Reliable 200W DC-DC Power Conversion
Engineered for performance and reliability, the Mean Well SD-200B-48 is a high-efficiency, 200W enclosed-type DC-DC converter. This unit expertly converts a 24V DC input (ranging from 19-36VDC) into a stable, regulated 48V DC output, making it an ideal step-up or 'boost' converter for demanding industrial applications. Built with the quality Mean Well is known for, this converter ensures consistent power for your critical systems.
Core Features & Benefits
- Wide Input Range: The 2:1 wide input voltage range accommodates variations in the power source, providing operational flexibility.
- Comprehensive Protection: Equipped with built-in safeguards against short circuits, overload, over voltage, and over temperature to ensure longevity and protect connected equipment.
- High Efficiency: With an efficiency rating of 86%, this converter minimizes energy loss, reducing heat generation and operational costs.
- Reliable Cooling: Cooled by free air convection, it operates silently and reliably without the need for a fan across a wide temperature range of -20°C to +60°C.
- Isolation: Features 1500VAC I/O isolation to enhance safety and system integrity.
- Quality Assured: Undergoes a 100% full load burn-in test to guarantee performance right out of the box.
Technical Specifications
| OUTPUT | |
| DC Voltage | 48V |
| Rated Current | 4.2A |
| Current Range | 0 ~ 4.2A |
| Rated Power | 201.6W |
| Ripple & Noise (max.) | 200mVp-p |
| Voltage Adj. Range | 43 ~ 53VDC |
| Voltage Tolerance | ±1.0% |
| INPUT | |
| Voltage Range | 19 ~ 36VDC |
| Efficiency (Typ.) | 86% |
| DC Current (Typ.) | 10.4A |
| PROTECTION | |
| Overload | 105 ~ 135% rated output power. Protection type: Shut down o/p voltage, re-power on to recover. |
| Over Voltage | 53 ~ 65V. Protection type: Shut down o/p voltage, re-power on to recover. |
| Over Temperature | Protection type: Shut down o/p voltage, recovers automatically after temperature goes down. |
| ENVIRONMENT | |
| Working Temperature | -20 ~ +60°C (Refer to output load derating curve) |
| Working Humidity | 20 ~ 90% RH non-condensing |
| Storage Temp., Humidity | -40 ~ +85°C, 10 ~ 95% RH |
| SAFETY & EMC | |
| Withstand Voltage | I/P-O/P: 1.5KVAC, I/P-FG: 1.5KVAC, O/P-FG: 0.5KVAC |
| Isolation Resistance | I/P-O/P, I/P-FG, O/P-FG: 100M Ohms / 500VDC |
| EMC Emission | Compliance to EN55022 (CISPR22) Class B |
| EMC Immunity | Compliance to EN61000-4-2,3,4,6,8; ENV50204 |
| OTHERS | |
| Manufacturer Part Number | SD-200B-48 |
| Dimensions (L x W x H) | 215 x 115 x 50 mm |
| Weight | 1.1 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 2069 reviews
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Product Reviews
★★★★★ 3
Closing
Color: Pink
Hard to close while earrings are in the case. Decent size and easy to carry around. Good quality, looks good and helps me keep my jewelry organized.
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Pretty Box
Color: Black
Nicely made for travel. Holds a lot of different kinds of jewelry. Good price, would buy again.
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Reviewed in the United States on March 28, 2026
★★★★★ 5
So cutie
Color: Cloud White, Material Type: Paper, PU
This is a bit large for a travel size jewelry box lol I really thought it was going to be a bit smaller than what it was. I can see why some of the ladies in the comments are saying they’re using it as their main jewelry box since they don’t have much jewelry for a standard sized jewelry box.
With that being said, it’s cute and CAN be small enough for travel. It fits a lot and I got this one in particular bc I like that it has a bigger lower compartment for larger pieces. It’s a nice quality travel jewelry box. It’ll fit my needs. But if you have a knack for packing small and you value space. I’d say skip on this one or do due diligence to double check the measurements to see if it’s something you’re okay with packing.
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Reviewed in the United States on January 31, 2026
★★★★★ 5
Good value
Color: Jelly Pink, Material Type: Paper, PU
This is a great jewelry box for travel or to just keep at home. Very stylish and holds more than it looks like it would.
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Reviewed in the United States on February 10, 2026
★★★★★ 5
CUTE
Color: Cloud White, Material Type: Paper, PU
I absolutely love this jewelry organizer! The 2-layer design gives it plenty of space without being bulky, making it perfect for travel. I was able to neatly store my earrings, necklaces, rings, and bracelets without anything getting tangled.
The interior is soft and protects my jewelry really well, and the compartments are thoughtfully designed to keep everything in place. The compact size fits easily in my suitcase or handbag, which is a huge plus.
The cloud white color looks elegant and makes it feel like a great gift option too. Overall, it’s practical, stylish, and very convenient for keeping jewelry organized on the go. Highly
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Reviewed in the United States on April 20, 2026