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Mean Well NFM-15-12 Power Supply 15W 12V 1.25A

SKU NFM-15-12
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Overview

NFM-15-12 is the 12V output model of this series: rated current 1.25A, rated power 15W, typical efficiency 78%.

Features

  • Universal AC input / Full range
  • Protections: Short circuit / Over load / Over voltage / Over temperature
  • Ultra-miniature size, light weight
  • Cooling by free air convection
  • Isolation classⅡ
  • Medical safety approved (2 x MOPP between primary to secondary)
  • No load power consumption<0.5W
  • 100% full load burn-in test
  • Fixed switching frequency at 67KHz
  • High reliability
  • Suitable for BF application with appropriate system consideration
  • 3 years warranty

Specifications

NFM-15-12Specifications from the official datasheet (2022-09-20 edition)

OUTPUT

DC VOLTAGE
12V
RATED CURRENT
1.25A
CURRENT RANGE
0 ~ 1.25A
RATED POWER
15W
RIPPLE & NOISE (max.)Note.2
150mVp-p
VOLTAGE ADJ. RANGE
10.8 ~ 13.2V
VOLTAGE TOLERANCENote.3
±1.0%
LINE REGULATION
±0.5%
LOAD REGULATION
±0.5%
SETUP, RISE TIME
1000ms, 20ms/230VAC 1000ms, 20ms/115VAC at full load
HOLD UP TIME (Typ.)
100ms/230VAC 24ms/115VAC at full load

INPUT

VOLTAGE RANGE
85 ~ 264VAC 120 ~ 370VDC
FREQUENCY RANGE
47 ~ 440Hz
EFFICIENCY (Typ.)
78%
AC CURRENT (Typ.)
0.35A/115VAC 0.2A/230VAC
INRUSH CURRENT (Typ.)
COLD START 30A/115VAC 50A/230VAC
LEAKAGE CURRENTNote.6
Touch current < 80μA/264VAC

PROTECTION

OVERLOAD
Above 105% 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
OVER TEMPERATURENote.5
Tj 140℃ typically (U1) detect on main control IC Protection type : Shut down o/p voltage, recovers automatically after temperature goes down

ENVIRONMENT

WORKING TEMP.
-20 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 50℃)
VIBRATION
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC (Note 4)

SAFETY STANDARDS
ANSI/AAMI ES60601-1,TUV EN60601-1, IEC60601-1, UL60950-1, EAC TP TC 004 approved
ISOLATION LEVEL
Primary-Secondary: 2xMOPP
WITHSTAND VOLTAGE
I/P-O/P:4KVAC
ISOLATION RESISTANCE
I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to EN55011(CISPR11), EN55032 (CISPR32) Class B, EN61000-3-2,-3, EAC TP TC 020
EMC IMMUNITY
Compliance to EN61000-4-2,3,4,5,6,8,11, EN55035, EN60601-1-2, EN61204-3, medical level, EAC TP TC 020

OTHERS

MTBF
499.7Khrs min. MIL-HDBK-217F (25℃)
DIMENSION
70*48*22mm (L*W*H)
PACKING
0.065Kg; 120pcs/8.8Kg/0.94CUFT
Test conditions and notes7
  1. 1. All parameters NOT specially mentioned are measured at 230VAC 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 0.1uf & 47uf parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives.
  5. 5. The over temperature protection (OTP) is the built-in function of the control IC (U1). The activating level described above is based on the specification provided by the IC manufacturer.
  6. 6. Touch current was measured from primary input to DC output.
  7. 7. 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

NFM-15-12 Mechanical Specification
Mechanical Specification
NFM-15-12 Block Diagram
Block Diagram
NFM-15-12 Derating Curve
Derating Curve

Downloads

FAQ

Can I use the NFM-15-12 for a 12V control panel or automation subsystem?

Yes, if the subsystem needs a constant 12V output and stays within 1.25A and 15W. That makes it a practical fit for low-power automation electronics, control boards, or auxiliary circuits rather than larger 12V devices. The 85-264VAC input also supports a wide AC input range.

Is the NFM-15-12 suitable for 12V sensors, relays, or industrial interface hardware?

It can power 12V industrial electronics that require regulated constant voltage and draw no more than 1.25A. With 15W available, it fits modest sensor, relay, or interface loads in industrial equipment. It is not intended for 12V loads that exceed the rated current or power.

Can this 12V model be used in compact equipment where space matters?

The unit measures 70.0 x 48.0 x 22.0 mm, so it is still relatively compact for enclosed equipment. That size can work well in smaller control assemblies or embedded systems needing a 12V rail. Verify the load remains within 15W and 1.25A.

Is the NFM-15-12 rated for outdoor or exposed installations?

The operating temperature range is -20C to +70C, which supports use across a wide temperature window. However, no IP rating is shown in the listed specs, so the product data does not establish outdoor, rain, or washdown suitability. It is best treated as a supply for protected environments based on the information provided.

How does the NFM-15-12 compare with the other 12V models in the series?

The listed 12V siblings are NFM-05-12 at 5.04W and 0.42A, NFM-10-12 at 10.2W and 0.85A, NFM-15-12 at 15W and 1.25A, and NFM-20-12 at 21.6W and 1.8A. The NFM-15-12 is above the 5W and 10W versions and below the 20W version in both power and current. It is the middle choice for 12V loads that need more than 0.85A but not more than 1.25A.

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Mean Well NFM-15-12 Power Supply 15W 12V
Mean Well

Mean Well NFM-15-12 Power Supply 15W 12V 1.25A

NFM-15-12 is the 12V output model of this series: rated current 1.25A, rated power 15W, typical efficiency 78%.

Features

  • Universal AC input / Full range
  • Protections: Short circuit / Over load / Over voltage / Over temperature
  • Ultra-miniature size, light weight
  • Cooling by free air convection
  • Isolation classⅡ
  • Medical safety approved (2 x MOPP between primary to secondary)
  • No load power consumption<0.5W
  • 100% full load burn-in test
  • Fixed switching frequency at 67KHz
  • High reliability
  • Suitable for BF application with appropriate system consideration
  • 3 years warranty
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