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Mean Well SD-50C-12 DC-DC Converter - 50W - 36~72V in 12V out 4.2A
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SD-50C-12 is the 12V output model of this series: rated current 4.2A, rated power 50.4W, typical efficiency 78%.
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
- C:36 ~ 72VDC
- EFFICIENCY (Typ.)
- 78%
- DC CURRENT
- 1.5A/48V
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-50C-12 to derive 12V control power from a 36-72V industrial source?
Yes, this model converts a 36-72V input to a 12V constant-voltage output. It is rated for 4.2A, so it fits 12V control loads that stay within that current limit.
Is the SD-50C-12 suitable for 12V embedded electronics in higher-voltage industrial systems?
It is intended for equipment that needs regulated 12V output up to 4.2A while operating from a 36-72V source. That makes it relevant where the available system voltage is higher than the required 12V load voltage.
Can this converter power 12V automation accessories in equipment that uses a 36-72V bus?
It can fit 12V automation accessories, panel devices, or interface hardware that need constant voltage and draw no more than 4.2A. The input side is specified for 36-72V.
Is the SD-50C-12 appropriate for outdoor installations?
The operating temperature is specified as -10C to +60C, which defines the thermal range. The listed specs do not provide an IP rating, so outdoor or weather-exposed suitability is not stated here.
How do the SD-50C-5, SD-50C-12, and SD-50C-24 differ?
They share the same 36-72V input range but have different outputs. SD-50C-5 is 5V at 10A, SD-50C-12 is 12V at 4.2A, and SD-50C-24 is 24V at 2.1A.
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Other SD-50C Models
2 other models| Model | Power | Voltage | Current | IP Rating | |
|---|---|---|---|---|---|
| Mean Well SD-50C-5 DC-DC Converter - 50W - 36~72V in 5V out 10A | 50W | 5V | 10A | IP20 | View |
| Mean Well SD-50C-24 DC-DC Converter - 50W - 36~72V in 24V out 2.1A | 50.4W | 24V | 2.1A | IP20 | View |
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