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Mean Well NFM-15-3.3 Power Supply 15W 3.3V 3.5A

SKU NFM-15-3.3

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End of Life, Succeeded by MFM-15-3.3

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Overview

NFM-15-3.3 is the 3.3V output model of this series: rated current 3.5A, rated power 11.55W, typical efficiency 73%.

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-15-3.3Specifications from the official datasheet (2022-09-20 edition)

OUTPUT

DC VOLTAGE: 3.3V
RATED CURRENT: 3.5A
CURRENT RANGE: 0 ~ 3.5A
RATED POWER: 11.55W
RIPPLE & NOISE (max.)^Note.2: 80mVp-p
VOLTAGE ADJ. RANGE: 3 ~ 3.63V
VOLTAGE TOLERANCE^Note.3: ±2.0%
LINE REGULATION: ±1.0%
LOAD REGULATION: ±1.0%
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.): 0.35A/115VAC 0.2A/230VAC
INRUSH CURRENT (Typ.): COLD START 30A/115VAC 50A/230VAC
LEAKAGE CURRENT^Note.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: 3.8 ~ 4.95V Protection type : Shut off o/p voltage, clamping by zener diode
OVER TEMPERATURE^Note.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. All parameters NOT specially mentioned are measured at 230VAC 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 0.1uf & 47uf 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. The final equipment must be re-confirmed that it still meets EMC directives.
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. Touch current was measured from primary input to DC output.
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-15-3.3 Mechanical Specification — Mechanical Specification

NFM-15-3.3 Block Diagram — Block Diagram

NFM-15-3.3 Derating Curve — Derating Curve

Downloads

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the NFM-15-3.3 for a 3.3V embedded controller or logic board?

It is a constant-voltage 3.3V supply rated for up to 3.5A and 11.5W. That aligns with embedded control boards, logic sections, and low-voltage electronics that need regulated 3.3V DC within that load range.

Is the NFM-15-3.3 a good fit for 3.3V industrial sensors or communications electronics?

It can support 3.3V electronics that remain within 3.5A output current and 11.5W total power. For low-voltage sensing, monitoring, or communication hardware built around 3.3V rails, the output rating is appropriate if the load stays inside those limits.

Can this power supply run a 3.3V microprocessor or FPGA-based control assembly?

Yes, if the assembly requires constant 3.3V DC and its current draw does not exceed 3.5A. The 85-264VAC input range also makes it suitable for equipment that may be installed in regions with different AC input standards.

Is the NFM-15-3.3 meant for outdoor equipment or only indoor electronics?

The specified operating temperature range is -20°C to +70°C, so the temperature envelope is defined. However, no IP rating is listed in the provided specs, so the product data does not establish outdoor or moisture-exposed suitability.

How does the NFM-15-3.3 compare with other NFM models in the same series?

The provided siblings include NFM-05-3.3 at 4.125W, 3.3V, 1.25A and NFM-10-3.3 at 8.25W, 3.3V, 2.5A below this model, plus NFM-20-3.3 at 14.85W, 3.3V, 4.5A above it. Other listed outputs in the same family are 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; NFM-05-24 at 5.52W, 24V, 0.23A; NFM-10-5 at 10W, 5V, 2A; NFM-10-12 at 10.2W, 12V, 0.85A; NFM-10-15 at 10.05W, 15V, 0.67A; NFM-10-24 at 10.08W, 24V, 0.42A; NFM-15-5 at 15W, 5V, 3A; NFM-15-12 at 15W, 12V, 1.25A; NFM-15-15 at 15W, 15V, 1A; NFM-15-24 at 15.12W, 24V, 0.63A; NFM-20-5 at 22W, 5V, 4.4A; NFM-20-12 at 21.6W, 12V, 1.8A; NFM-20-15 at 14.85W in the provided data; and NFM-20-24 at 22.08W, 24V, 0.92A. This places the NFM-15-3.3 in the mid-range 3.3V position by current and power.

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Model	Power	Voltage	Current
Mean Well NFM-15-5 Power Supply 15W 5V 3A	15W	5V	3A	View
Mean Well NFM-15-24 Power Supply 15W 24V 630mA	15.12W	24V	0.63A	View
Mean Well NFM-15-15 Power Supply 15W 15V 1A	15W	15V	1A	View
Mean Well NFM-15-12 Power Supply 15W 12V 1.25A	15W	12V	1.25A	View

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Mean Well NFM-15-3.3 Power Supply 15W 3.3V 3.5A

Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC (Note 4)

OTHERS

Technical drawings

Downloads

Catalogues1

FAQ

Payment & Security

Other NFM-15 Models

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Mean Well NFM-15-3.3 Power Supply 15W 3.3V 3.5A

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