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Mean Well SD-25C-12 DC-DC Converter - 25W - 36~72V in 12V out 2.1A
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SD-25C-12 is the 12V output model of this series: rated current 2.1A, rated power 25.2W, 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
- 2.1A
- CURRENT RANGE
- 0 ~ 2.1A
- RATED POWER
- 25.2W
- 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
- 0.8A/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
- 3682.6K hrs min. Telcordia SR-332 (Bellcore) ; 528.8K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 99*97*36mm (L*W*H)
- PACKING
- 0.38Kg; 45pcs/17.8Kg/0.94CUFT
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-25C-12 to run a small 12V control device from a 36-72V source?
Yes, it is built for applications where the input stays within 36-72V and the load needs 12V constant voltage output. The available output is 2.1A and 25.2W, so it fits smaller 12V control and embedded loads rather than heavier 12V equipment.
Is the SD-25C-12 suitable for 12V relays, sensors, or alarm/control electronics in industrial systems?
It can support low-power 12V electronics as long as the total demand stays within 2.1A and 25.2W. That makes it appropriate for compact industrial control, signaling, or embedded support circuits that need regulated 12V output.
Can this converter power a small 12V fan or accessory in a telecom or automation cabinet?
It can be used for smaller 12V loads when the source voltage is within 36-72V and the load stays under 2.1A. The 25.2W output rating means it is intended for lighter-duty 12V accessories, not high-draw 12V devices.
How does the SD-25C-12 compare with the other SD-25C models?
The SD-25C family includes SD-25C-5 at 25W, 5V, 5A; SD-25C-12 at 25.2W, 12V, 2.1A; and SD-25C-24 at 26.4W, 24V, 1.1A. These models share the same 36-72V input range and differ by output voltage, current, and rated power.
Is the SD-25C-12 rated for outdoor conditions?
No IP rating is provided in the listed specs, so the product data does not support treating it as an outdoor-rated converter. The specified operating temperature range is -10°C to +60°C, which points to use in protected environments that remain within that temperature span.
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Other SD-25C Models
2 other models| Model | Power | Voltage | Current | IP Rating | |
|---|---|---|---|---|---|
| Mean Well SD-25C-5 DC-DC Converter - 25W - 36~72V in 5V out 5A | 25W | 5V | 5A | IP20 | View |
| Mean Well SD-25C-24 DC-DC Converter - 25W - 36~72V in 24V out 1.1A | 26.4W | 24V | 1.1A | IP20 | View |
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