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Mean Well PM-05-3.3 Power Supply 5W 3.3V 1.25A
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PM-05-3.3 is the 3.3V output model of this series: rated current 1.25A, rated power 4.125W, typical efficiency 67%.
Features
- Universal AC input / Full range
- Protections: Short circuit / Overload / Over voltage
- 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
- 1.25A
- CURRENT RANGE
- 0 ~ 1.25A
- RATED POWER
- 4.125W
- RIPPLE & NOISE (max.)Note.2
- 80mVp-p
- VOLTAGE TOLERANCENote.3
- ±3.0%
- 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.)
- 67%
- AC CURRENT (Typ.)
- 0.12A/115VAC 0.08A/230VAC
- INRUSH CURRENT (Typ.)
- COLD START 25A/115VAC 45A/230VAC
- LEAKAGE CURRENTNote.5
- Touch current < 80μ A/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
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
- 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
- 1513.4Khrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 62.85*50*19.7mm (L*W*H)
- PACKING
- 0.079Kg; 120pcs/10.5Kg/0.94CUFT
Test conditions and notes6
- 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. Touch current was measured from primary input to DC output.
- 6. 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 PM-05-3.3 to power a 3.3V microcontroller or embedded board from AC mains?
Yes, this model is sized for low-power 3.3V embedded electronics that need a constant-voltage DC output from 85-264VAC input. It delivers 3.3V at up to 1.25A, with 4.125W total output available.
Is the PM-05-3.3 a good choice for 3.3V industrial communication or logic circuits?
It can be a fit for 3.3V logic and communication circuits when the total draw stays within 1.25A and 4.125W. Its constant-voltage 3.3V output makes it more appropriate for control electronics than for loads requiring a higher-voltage rail.
Can this power supply run a small 3.3V IoT or monitoring device inside equipment?
Yes, for compact 3.3V monitoring or IoT hardware that remains inside the 4.125W limit. The 62.85 × 50.0 × 19.7 mm size supports use in small enclosures where a mains-powered 3.3V rail is needed.
Would the PM-05-3.3 work for low-voltage control electronics in an automation product?
It is appropriate for low-voltage control sections that are designed around a 3.3V constant-voltage rail. The key limit is output capacity: the connected electronics must stay at or below 1.25A and 4.125W.
Can the PM-05-3.3 be used in outdoor equipment or cold and hot environments?
The published operating temperature range is -20°C to +70°C, so its thermal range is defined. However, no IP rating is listed, so weather exposure or outdoor washdown use should not be assumed from the provided specs.
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Other PM-05 Models
4 other models| Model | Power | Voltage | Current | |
|---|---|---|---|---|
| Mean Well PM-05-5 Power Supply 5W 5V 1A | 5W | 5V | 1A | View |
| Mean Well PM-05-24 Power Supply 5W 24V 230mA | 5.52W | 24V | 0.23A | View |
| Mean Well PM-05-15 Power Supply 5W 15V 330mA | 4.95W | 15V | 0.33A | View |
| Mean Well PM-05-12 Power Supply 5W 12V 420mA | 5.04W | 12V | 0.42A | View |
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