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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
4.6 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Is does the job, love it.
Size: 60% Compact
Is really comfy, it does the job, you can't go wrong with it. Just buy it if you have a 75% keyboard or less because is not long. For me is not a problem.
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Reviewed in the United States on February 20, 2026
★★★★★ 5
Nice wrist rest
Size: 100% Standard
Comfortable angle, solid enough to not move around but soft enough to be good for long term usage.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
★★★★★ 5
Comfortable Rest
Size: Keyboard Wrist Rest (Pack of 1), Style: Slim & Compact
Great product for resting hand as you work, handling tasks or typing reports or checking emails!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026
★★★★★ 5
Fits Magic Keyboard Perfectly
Size: Keyboard Wrist Rest (Pack of 1), Style: Slim
This is exactly the length of the Magic Keyboard and it is low to the ground. I did buy a thing that angles the Magic Keyboard slightly upwards in the back so it has a small angle and then I have this wrist rest. It is wonderful. I am so glad after all the digging and looking I found this one and bought it. I took it out of the box and didn't remove the paper on the back to make sure I liked it. I do, I love it. It is not only comfortable, it looks sleek, fits exactly and I don't get sore after hours upon hours of typing. The quality is good. I have zero complaints and feel lucky this is the first one I chose as it hit the mark.
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Reviewed in the United States on January 6, 2025
★★★★★ 5
Comfortable Wrist Rest for larger laptops.
Size: Keyboard Wrist Rest (Pack of 1), Style: Mechanical & Gaming
I bought this to use with my new 17 inch MSI gaming laptop. I was getting a very sore wrist as the laptop is pretty tall. This is tall enough that it is preventing the strain on the wrist. It is comfortable and not too hard, but firm enough to support my wrists. It is long enough to fit the entire length of my laptop without being too long. The curved shape puts the extra padding on the left side where I use it most for the WASD keys, but also gives me padding on the right for when I am typing and need it there also. It has a strong durable feel to it, but is smooth and soft. The bottom is shiny and rubbery and grips my lapdesk so that it does not slip and stays right where I place it. It appears to be well constructed, and considering the price, I would expect nothing less.
I am very happy with this purchase and would recommend it to anyone with a large laptop or gaming keyboard.
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Reviewed in the United States on June 20, 2017
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