Over 15 years experience of providing support of MEAN WELL Power Supplies
Image shown is a representation only. Exact specifications should be obtained from the product datasheet.
Mean Well SD-50A-12 DC-DC Converter - 50.4W - 9.2~18V in 12V out 4.2A
Log in to see priceOverview
SD-50A-12 is the 12V output model of this series: rated current 4.2A, rated power 50.4W, typical efficiency 72%.
Features
- 2:1 wide input range
- Protections: Short circuit / Overload / Over voltage
- 1500VAC I/O isolation
- Built-in EMI filter, low ripple noise
- 100% full load burn-in test
- Fixed switching frequency at 83KHz
- Low cost
- High reliability
- 2 years warranty
Specifications
OUTPUT
- DC VOLTAGE
- 12V
- RATED CURRENT
- 4.2A
- CURRENT RANGE
- 0 ~ 4.2A
- RATED POWER
- 50.4W
- RIPPLE & NOISE (max.)Note.2
- 120mVp-p
- VOLTAGE ADJ. RANGE
- 11 ~ 16VDC
- VOLTAGE TOLERANCENote.3
- ±1.0%
- LINE REGULATION
- ±0.3%
- LOAD REGULATION
- ±0.3%
- SETUP, RISE, HOLD UP TIME
- 2.5s, 50ms, ------ at full load
INPUT
- VOLTAGE RANGE
- A:9.2 ~ 18VDC
- EFFICIENCY (Typ.)
- 72%
- DC CURRENT
- 7A/12V
PROTECTION
- OVERLOAD
- 105 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
- OVER VOLTAGE
- 16.8 ~ 20V/10% load Protection type : Hiccup mode, recovers automatically after fault condition is removed
ENVIRONMENT
- WORKING TEMP.
- -10 ~ +60℃ (Refer to "Derating Curve")
- WORKING HUMIDITY
- 20 ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -20 ~ +85℃, 10 ~ 95% RH
- TEMP. COEFFICIENT
- ±0.03%/℃ (0 ~ 50℃)
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes
SAFETY & EMC (Note 4)
- SAFETY STANDARDS
- EAC TP TC 004 approved, Design refer to LVD, AS/NZS 62368.1
- WITHSTAND VOLTAGE
- I/P-O/P:1.5KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
- ISOLATION RESISTANCE
- I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
- EMC EMISSION
- Compliance to BS EN/EN55032 (CISPR32) Class B, EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/EN61000-4-2,3,4,6,8, BS EN/EN55035, heavy industry level, EAC TP TC 020
OTHERS
- MTBF
- 3293.1K hrs min. Telcordia SR-332 (Bellcore) ; 512.8K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 159*97*38mm (L*W*H)
- PACKING
- 0.43Kg; 24pcs/11.35Kg/0.83CUFT
Test conditions and notes5
- 1. All parameters NOT specially mentioned are measured at 12,24,48VDC input, rated load and 25℃ of ambient temperature.
- 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
- 3. Tolerance : includes set up tolerance, line regulation and load regulation.
- 4. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
- 5. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).
Technical drawings
Downloads
FAQ
Can I use the SD-50A-12 for a small 12V industrial controller or HMI?
Yes, this model provides constant-voltage 12V output up to 4.2A. It is intended for lower-power 12V industrial or control loads within its 50.4W rated power and 9.2-18V input range.
Is the SD-50A-12 suitable for 12V embedded systems in compact equipment?
It can be used for 12V embedded devices that need a regulated 12V rail and operate within the available 4.2A output current. Its 159 × 97 × 38 mm housing and 0.43 kg weight also suit tighter equipment spaces.
Can this converter support 12V monitoring, alarm, or access-control electronics from a low-voltage source?
Yes, if the system requires constant 12V output and the source stays within the 9.2-18V input range. The rated 4.2A output makes it more appropriate for lighter 12V electronics than for high-current 12V loads.
Can the SD-50A-12 be used in vehicle or mobile control applications with a 12V output requirement?
It can be a fit when the available source is between 9.2V and 18V and the load needs regulated 12V. The 2:1 wide input range supports that lower-voltage source window for compact mobile or embedded control systems.
How does the SD-50A-12 compare with the other SD-50A output versions?
The SD-50A-12 provides 12V output at 4.2A with a rated power of 50.4W. In the same SD-50A family, the SD-50A-24 is 24V at 2.1A with 50.4W rated power, and the SD-50A-5 is 5V at 10A with 50W rated power. These models share the 9.2-18V input range, 159 × 97 × 38 mm dimensions, 0.43 kg weight, and -10°C to +60°C operating temperature.
Is the SD-50A-12 appropriate for outdoor use or unsealed enclosures?
The operating temperature range is -10°C to +60°C. No IP rating is provided in the supplied specs, so these specs do not confirm outdoor exposure protection and point to use in a protected enclosure when environmental sealing matters.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Other SD-50A Models
2 other models| Model | Power | Voltage | Current | IP Rating | |
|---|---|---|---|---|---|
| Mean Well SD-50A-24 DC-DC Converter - 50.4W - 9.2~18V in 24V out 2.1A | 50.4W | 24V | 2.1A | IP20 | View |
| Mean Well SD-50A-5 DC-DC Converter - 50W - 9.2~18V in 5V out 10A | 50W | 5V | 10A | IP20 | View |
Please log in to write a review.
Write a review
Reviews are checked before publishing. By submitting you confirm this is your genuine experience with this product.
Submitting your review…
It's published and now helps other buyers.
We're checking it and it'll appear shortly.
Please try again.
