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Mean Well

Mean Well NSD15-12S12 DC-DC Converter - 15W - 9.4~36V in 12V out 1.25A

SKU NSD15-12S12
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Overview

NSD15-12S12 is the 12V output model of this series: rated current 1.25A, rated power 15W, typical efficiency 81%.

Features

  • Wide 4:1 DC input range
  • Protections: Short circuit / Overload / Over voltage
  • 1500VDC I/O isolation
  • Built-in EMI filter
  • Cooling by free air convection
  • Output voltage trimming function
  • Built-in remote ON-OFF control
  • 100% full load burn-in test
  • Low cost
  • High reliability
  • 2 years warranty

Specifications

NSD15-12S12Specifications from the official datasheet (2024-10-30 edition)

OUTPUT

DC VOLTAGE
12V
RATED CURRENT
1.25A
CURRENT RANGE
0.06 ~ 1.25A
RATED POWER
15W
CAPACITIVE LOAD (max.)
3300uF
RIPPLE & NOISE (max.)Note.2
75mVp-p(25% ~ 100% load)
VOLTAGE TOLERANCENote.3
±2.0%
LINE REGULATION
±1.0% at 10% ~ 100% load
LOAD REGULATION
±1.0% at 10% ~ 100% load
TRIM OUTPUT (Typ.)
±5.0%
SETUP TIME
100ms/RATED DC INPUT at full Load

INPUT

RATED DC INPUT
12VDC
VOLTAGE RANGE
9.4 ~ 36VDC
EFFICIENCY (Typ.)
81%
DC CURRENT
1.8A/12VDC
SHUTDOWN IDLE CURRENT
20mA

PROTECTION

OVERLOAD
Above 105% rated output power Protection type : Over power limiting, recovers automatically after fault condition is removed
OVER VOLTAGE(CLAMP)
13.8 ~ 18V
SHORT CIRCUITNote.4
Recovers automatically after fault condition is removed

FUNCTION

ON/OFF CONTROL
Logic "1" or open circuit : ON Logic "0" or short to PIN2 : OFF

ENVIRONMENT

WORKING TEMP.
-25 ~ +70℃
WORKING HUMIDITY
0% ~ 95% RH max.
STORAGE TEMP., HUMIDITY
-40 ~ +85℃, 0 ~ 95% RH
TEMP. COEFFICIENT
±0.03%/℃ (0~50℃)

SAFETY & EMC (Note 5)

SAFETY STANDARDS
UL62368-1, EAC TP TC 004 approved, Design refer to BS EN/EN62368-1
ISOLATION VOLTAGE
I/P-O/P:1.5KVDC
ISOLATION RESISTANCE
I/P-O/P: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, light industry level, EAC TP TC 020

OTHERS

MTBF
12058.3K hrs min. Telcordia SR-332 (Bellcore) ; 1734.0K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
50.8*38.1*9.82mm (2"*1.5"*0.387") (L*W*H)
PACKING
0.03Kg; 180pcs/6.4Kg/0.94CUFT
Test conditions and notes8
  1. 1. All parameters NOT specially mentioned are measured at 12, 48VDC input, rated load and 25℃ of ambient temperature.
  2. 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. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. Short circuit no more than 60 seconds.
  5. 5. 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 230mm*230mm 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 )
  6. 6. Derating to 80% load is needed for NSD15-48S series at 18Vdc input voltage. Full output wattage can be acquired when the input voltage is higher than 20Vdc.
  7. 7. EMC filter suggestion:
  8. 8. 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

NSD15-12S12 Mechanical Specification
Mechanical Specification
NSD15-12S12 Block Diagram
Block Diagram
NSD15-12S12 Derating Curve
Derating Curve

Downloads

FAQ

Can I use the NSD15-12S12 to run a 12V PLC accessory or industrial communication module?

Yes, this model is appropriate for low-power 12V industrial electronics that need a constant-voltage output from a 9.4-36V input range. Its 15W rating and 1.25A output current fit compact PLC accessories, communication modules, and control-side devices.

Is the NSD15-12S12 suitable for embedded systems that need a regulated 12V rail?

It can be used for embedded systems that require a stable 12V output and stay within 1.25A. The 15W power level makes it a better fit for control, monitoring, and interface electronics than for larger 12V loads.

Can this converter power a small 12V HMI or panel subsystem from a variable DC source?

Yes, the 9.4-36V input range supports use where the upstream DC source can vary across common low-voltage industrial systems. The 12V constant-voltage output and 15W capacity suit compact HMI and panel electronics that do not exceed 1.25A.

Does the NSD15-12S12 work in colder or hotter industrial environments?

This version is rated for -25°C to +70°C working temperature (storage -40°C to +85°C), the same as every other NSD15-S model, with load derating at higher ambient temperatures. No IP rating is listed, so the temperature range does not by itself confirm exposed outdoor use.

What are the key spec differences between the NSD15-12S12 and its NSD15 siblings?

The other 9.4~36VDC input siblings are NSD15-12S3 at 12.375W, 3.3V, 3.75A; NSD15-12S5 at 15W, 5V, 3A; and NSD15-12S15 at 15W, 15V, 1A. The 18~72VDC input NSD15-48S3, NSD15-48S5, NSD15-48S12 and NSD15-48S15 offer the same outputs. The NSD15-12S12 itself is the single-output 12V, 15W, 1.25A option with 9.4~36VDC input.

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Mean Well NSD15-12S12 DC-DC Converter - 15W - 9.4~36V in 12V out 1.25A
Mean Well

Mean Well NSD15-12S12 DC-DC Converter - 15W - 9.4~36V in 12V out 1.25A

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NSD15-12S12 is the 12V output model of this series: rated current 1.25A, rated power 15W, typical efficiency 81%.

Features

  • Wide 4:1 DC input range
  • Protections: Short circuit / Overload / Over voltage
  • 1500VDC I/O isolation
  • Built-in EMI filter
  • Cooling by free air convection
  • Output voltage trimming function
  • Built-in remote ON-OFF control
  • 100% full load burn-in test
  • Low cost
  • High reliability
  • 2 years warranty
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