💡 New range: Boke DALI-2 LED drivers | 10–240 W | 5-year warranty Explore the range

☎ 0800 88 87 86  |  +64 22 522 4414

Over 15 years experience of providing support of MEAN WELL Power Supplies

1 5

Image shown is a representation only. Exact specifications should be obtained from the product datasheet.

Mean Well

Mean Well NFM-05-12 Power Supply 5W 12V 420mA

SKU NFM-05-12
Log in to see price Trade pricing & online ordering for account holders
Log in or apply for a trade account →
End of Life, Succeeded by MFM-05-12
Available to order
|

Overview

NFM-05-12 is the 12V output model of this series: rated current 0.42A, rated power 5.04W, typical efficiency 73%.

Features

  • Universal AC input / Full range
  • Protections: Short circuit / Overload / 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-05-12Specifications from the official datasheet (2022-09-20 edition)

OUTPUT

DC VOLTAGE
12V
RATED CURRENT
0.42A
CURRENT RANGE
0 ~ 0.42A
RATED POWER
5.04W
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.)
73%
AC CURRENT (Typ.)
0.12A/115VAC 0.08A/230VAC
INRUSH CURRENT (Typ.)
COLD START 25A/115VAC 45A/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 145℃ 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, 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
738.7Khrs min. MIL-HDBK-217F (25℃)
DIMENSION
58*45*19.1mm (L*W*H)
PACKING
0.03Kg; 120pcs/5.0Kg/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-05-12 Mechanical Specification
Mechanical Specification
NFM-05-12 Block Diagram
Block Diagram
NFM-05-12 Derating Curve
Derating Curve

Downloads

FAQ

Can I use the NFM-05-12 for a small 12V PLC, relay, or control circuit?

It can fit low-power 12V control loads that stay within 0.42A and 5.04W. Because it is a constant voltage supply, it is better suited to electronics and control circuits designed for a regulated 12V input rather than loads that need higher startup or running current.

Is the NFM-05-12 suitable for 12V sensors, transmitters, or monitoring devices in an industrial panel?

Yes, it is a practical choice for 12V monitoring, sensing, or signaling devices when the total load does not exceed 0.42A or 5.04W. Its 85-264VAC input also helps in control cabinets or equipment that may be used across different AC input ranges.

Can this 12V 5W power supply run a small embedded or automation controller?

It can support compact 12V embedded or automation hardware if the device's draw is within 0.42A and 5.04W. For controllers, I/O boards, or accessory modules above that level, a higher-output model in the same series is the safer fit.

How does the NFM-05-12 compare with the other Mean Well NFM series options?

Within the series, the 5W-class models are NFM-05-3.3 at 4.125W, 3.3V, 1.25A; NFM-05-5 at 5W, 5V, 1A; NFM-05-12 at 5.04W, 12V, 0.42A; NFM-05-15 at 4.95W, 15V, 0.33A; and NFM-05-24 at 5.52W, 24V, 0.23A. Higher-output siblings include NFM-10, NFM-15, and NFM-20 versions, such as 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, with corresponding 3.3V, 5V, 15V, and 24V variants also listed.

Is the NFM-05-12 suitable for indoor or outdoor equipment?

The listed operating temperature range is -20°C to +70°C, so the temperature spec supports a broad indoor equipment range. No IP rating is provided in the listed specs, so outdoor exposure, washdown, or weather-exposed use is not established by this product data alone.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

{ "id":8430825767211, "variants" :[{ "context":"default", "variant_id": 45664109986091, "sku":"NFM-05-12", "inventory_qty" : 0, "customer" :false, "custom_html" :"\u003ca class=\"text-current logged-out-price logged-out\" href=\"https:\/\/wellforces.co.nz\/customer_authentication\/redirect?locale=en\u0026region_country=NZ\"\u003e\n \u003cspan \u003ePlease \u003c\/span\u003e \u003cspan class=\"login-text\"\u003eLogin\u003c\/span\u003e \u003cspan\u003e for Pricing\u003c\/span\u003e\n \u003c\/a\u003e", "volume_html" :"\u003cvolume-pricing class=\"parent-display inside_product_form\" id=\"volume-pricing-main\" \u003e\u003c\/volume-pricing\u003e" } ] }
Mean Well

Mean Well NFM-05-12 Power Supply 5W 12V 420mA

Log in to see price

NFM-05-12 is the 12V output model of this series: rated current 0.42A, rated power 5.04W, typical efficiency 73%.

Features

  • Universal AC input / Full range
  • Protections: Short circuit / Overload / 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
View product

  • Call us

    0800 88 87 86

  • Email us

    contact@wellforces.co.nz

  • Business Hours

    Mon-Fri 8:30am-5:00pm

  • Wholesale and Trade Account

    Let's grow together
Back to top