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Mean Well SD-50B-24 DC-DC Converter - 50W - 19~36V in 24V out 2.1A
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SD-50B-24 is the 24V output model of this series: rated current 2.1A, rated power 50.4W, typical efficiency 80%.
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
- 24V
- RATED CURRENT
- 2.1A
- CURRENT RANGE
- 0 ~ 2.1A
- RATED POWER
- 50.4W
- RIPPLE & NOISE (max.)Note.2
- 150mVp-p
- VOLTAGE ADJ. RANGE
- 23 ~ 30VDC
- VOLTAGE TOLERANCENote.3
- ±1.0%
- LINE REGULATION
- ±0.2%
- LOAD REGULATION
- ±0.2%
- SETUP, RISE, HOLD UP TIME
- 2.5s, 50ms, ------ at full load
INPUT
- VOLTAGE RANGE
- B:19 ~ 36VDC
- EFFICIENCY (Typ.)
- 80%
- DC CURRENT
- 3A/24V
PROTECTION
- OVERLOAD
- 105 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
- OVER VOLTAGE
- 31.5 ~ 37.5V/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-50B-24 for a 24V industrial sensor or control circuit from a 19-36V source?
Yes, this model is a 24V constant-voltage converter rated for 2.1A output. It is intended for systems where the available input is within 19-36V and the load requires regulated 24V.
Is the SD-50B-24 a fit for small 24V automation loads in a control cabinet?
It can suit low-power 24V automation equipment that needs constant voltage and draws up to 2.1A. The defining limits are the 24V output and the 19-36V input range.
Can this converter power 24V embedded or industrial communication hardware?
It is appropriate for embedded or industrial hardware that requires a steady 24V output and stays within the 2.1A rating. This model is selected when the source side falls within the specified 19-36V range.
Can the SD-50B-24 be used in hot or cold indoor equipment spaces?
The listed operating temperature range is -10C to +60C. No IP rating is included in the provided specs, so the temperature envelope is defined but sealed outdoor use is not established here.
How does the SD-50B-24 compare with the other 24V SD-50 versions?
The SD-50A-24, SD-50B-24, and SD-50C-24 all provide 24V output at 2.1A. Their difference is input range: 9.2-18V for SD-50A-24, 19-36V for SD-50B-24, and 36-72V for SD-50C-24.
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Other SD-50B Models
2 other models| Model | Power | Voltage | Current | IP Rating | |
|---|---|---|---|---|---|
| Mean Well SD-50B-5 DC-DC Converter - 50W - 19~36V in 5V out 10A | 50W | 5V | 10A | IP20 | View |
| Mean Well SD-50B-12 DC-DC Converter - 50W - 19~36V in 12V out 4.2A | 50.4W | 12V | 4.2A | IP20 | View |
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