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Mean Well SD-25A-12 DC-DC Converter - 25W - 9.2~18V in 12V out 2.1A
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SD-25A-12 is the 12V output model of this series: rated current 2.1A, rated power 25.2W, 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
- 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
- A:9.2 ~ 18VDC
- EFFICIENCY (Typ.)
- 72%
- DC CURRENT
- 3.2A/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
- 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-25A-12 for a small 12V industrial control circuit?
It is suited to small 12V constant-voltage control loads that stay within 2.1A and 25.2W. The listed input range is 9.2-18VDC.
Is the SD-25A-12 a fit for compact embedded electronics that need 12V power?
Yes, for embedded electronics that require a regulated 12V output and draw no more than 2.1A. Its rated output power is 25.2W.
Can this model power a 12V sensor or monitoring device in an automation system?
It can fit a 12V sensor, monitoring, or low-power automation device if the load remains within 2.1A and 25.2W. This model is a constant-voltage converter with a 9.2-18VDC input range.
What is the difference between SD-25A-12, SD-25A-24, and SD-25A-5?
Within the SD-25A group, SD-25A-12 is 25.2W at 12V and 2.1A, SD-25A-24 is 26.4W at 24V and 1.1A, and SD-25A-5 is 25W at 5V and 5A. All three list the same 9.2-18VDC input range.
Can the SD-25A-12 be used outdoors or in unprotected enclosures?
The published specs give an operating temperature range of -10°C to +60°C, with output derating at higher temperatures per the derating curve, but no IP rating is listed. Based on that data, temperature suitability is defined, while outdoor or washdown protection is not specified.
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Other SD-25A Models
2 other models| Model | Power | Voltage | Current | IP Rating | |
|---|---|---|---|---|---|
| Mean Well SD-25A-5 DC-DC Converter - 25W - 9.2~18V in 5V out 5A | 25W | 5V | 5A | IP20 | View |
| Mean Well SD-25A-24 DC-DC Converter - 25W - 9.2~18V in 24V out 1.1A | 26.4W | 24V | 1.1A | IP20 | View |
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