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Mean Well NFM-10-3.3 Power Supply 10W 3.3V 2.5A
Overview
NFM-10-3.3 is the 3.3V output model of this series: rated current 2.5A, rated power 8.25W, typical efficiency 66%.
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
OUTPUT
- DC VOLTAGE
- 3.3V
- RATED CURRENT
- 2.5A
- CURRENT RANGE
- 0 ~ 2.5A
- RATED POWER
- 8.25W
- RIPPLE & NOISE (max.)Note.2
- 150mVp-p
- VOLTAGE ADJ. RANGE
- 3 ~ 3.63V
- VOLTAGE TOLERANCENote.3
- ±2.0%
- LINE REGULATION
- ±1.0%
- LOAD REGULATION
- ±1.0%
- SETUP, RISE TIME
- 1800ms, 20ms/230VAC 1800ms, 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.)
- 66%
- AC CURRENT (Typ.)
- 0.25A/115VAC 0.15A/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
- 3.8 ~ 4.95V 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, 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
- 723.2Khrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 65*45*22mm (L*W*H)
- PACKING
- 0.045Kg; 120pcs/6.4Kg/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
Downloads
FAQ
Can I use the NFM-10-3.3 for a 3.3V embedded controller board?
Yes, it is a constant-voltage 3.3V supply for electronics that require regulated 3.3V power. Its output is rated at 2.5A and 8.25W, which makes it suitable for embedded control boards, logic sections, or communication modules within that load range. The load needs to stay below both the current and power limits.
Is this power supply a fit for 3.3V industrial communication or I/O modules?
It can be used where the module expects a stable 3.3V rail and the total demand does not exceed 2.5A. With 8.25W available, it is aimed at lower-power embedded or automation electronics rather than higher-power peripherals. The 85-264VAC input range supports use across common AC supply ranges.
Can the NFM-10-3.3 power 3.3V sensors and processor logic in one assembly?
It can support combined 3.3V logic and sensor loads as long as the total draw remains within 2.5A and 8.25W. That makes it practical for a compact control assembly where several low-voltage circuits share one regulated rail. It is not intended for loads that require a different output voltage.
Is the NFM-10-3.3 appropriate for outdoor equipment cabinets?
The operating temperature range is -20C to +70C, which covers a wide temperature span for equipment use. However, no IP rating is given in the supplied specs, so the listing does not state outdoor or water-ingress protection. That means outdoor suitability is not established by the product data here.
What is the difference between the NFM 3.3V models in this series?
The NFM-10-3.3 is rated at 8.25W and 2.5A. It provides more current than the 5W class model but less than the 15W and 20W versions. The NFM-10-3.3 is the second step in that progression.
Payment & Security
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Other NFM-10 Models
4 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well NFM-10-5 Power Supply 10W 5V 2A | 10W | 5V | 2A | IP20 | $19.11 | View |
| Mean Well NFM-10-24 Power Supply 10W 24V 420mA | 10.08W | 24V | 0.42A | IP20 | $19.11 | View |
| Mean Well NFM-10-15 Power Supply 10W 15V 670mA | 10.05W | 15V | 0.67A | IP20 | $19.11 | View |
| Mean Well NFM-10-12 Power Supply 10W 12V 850mA | 10.2W | 12V | 0.85A | IP20 | $19.11 | View |
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