Over 15 years experience of providing support of MEAN WELL Power Supplies
Overview
SD-15C-12 is the 12V output model of this series: rated current 1.25A, rated power 15W, typical efficiency 79%.
Features
- 2:1 wide input range
- Protections:Short circuit/Over load /voltage
- Built-in EMI filter, low ripple noise
- 100% full load burn-in test
- Low cost
- High reliability
- 2 years warranty
Specifications
OUTPUT
- DC VOLTAGE
- 12V
- RATED CURRENT
- 1.25A
- CURRENT RANGE
- 0 ~ 1.25A
- RATED POWER
- 15W
- RIPPLE & NOISE (max.)Note.2
- 120mVp-p
- VOLTAGE ADJ.RANGE
- 10.8~13.2VDC
- VOLTAGE TOLERANCENote.3
- ±1.0%
- LINE REGULATION
- ±0.3%
- LOAD REGULATION
- ±0.3%
- SETUP, RISE ,HOLD UP TIME
- 2.5s, 25ms,--- 12VDC/24VDC/48VDC at full load
INPUT
- VOLTAGE RANGE
- C:36~72VDC
- EFFICIENCY(Typ.)
- 79%
- DC CURRENT(Typ.)
- 0.45A/48VDC
PROTECTION
- OVER LOAD
- 105 ~160% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
- OVER VOLTAGE
- 13.8~ 16.2V Protection type : Shut off o/p voltage, clamping by zener diode
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
- SAFETY STANDARDS
- EAC TP TC 004 approved, design refer to AS/NZS 62368.1
- WITHSTAND VOLTAGE
- I/P-O/P:1.5KVAC I/P-FG:1KVAC 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), EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/EN61000-4-2,3,4,6,8, BS EN/EN55035, light industry level, EAC TP TC 020
OTHERS
- MTBF
- 3861.2K hrs min. Telcordia SR-332 (Bellcore) ; 644.2K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 78*51*28mm (L*W*H)
- PACKING
- 0.18Kg,60 PCS/11.8Kg
Test conditions and notes5
- 1. All parameters NOT specially mentioned are measured at normal 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-15C-12 to step down a 48V system for 12V control electronics?
Yes, this model is intended for constant-voltage 12V loads when the source falls within the listed 36-72VDC input range. It delivers up to 1.25A at 12V with a 15W rating, which suits low-power control electronics rather than larger 12V loads.
Is the SD-15C-12 appropriate for industrial monitoring or alarm modules that need 12V power?
It is appropriate when the module requires regulated 12V and the total draw stays within 1.25A and 15W. The 36-72VDC input range is useful where the upstream source varies within that span.
Would this converter work for embedded 12V accessories in a higher-voltage automation system?
Yes, that is a typical fit if the accessory needs constant-voltage 12V and is supplied from a 36-72VDC bus. The listed 1.5KVAC input-output withstand voltage is also relevant where electrical separation is needed in industrial or embedded equipment.
What is the difference between SD-15C-12 and the other SD-15C versions?
The SD-15C family includes SD-15C-5 at 15W, 5V, 3A; SD-15C-12 at 15W, 12V, 1.25A; and SD-15C-24 at 15W, 24V, 0.625A. The family keeps the same 15W class but changes output voltage and current across the three models.
Can the SD-15C-12 be used in outdoor equipment cabinets?
Its operating temperature range is -10°C to +60°C, with output derating at higher temperatures per the derating curve. The supplied specs do not include an IP rating, so outdoor suitability depends on whether the overall equipment provides the needed ingress protection.
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