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Mean Well LRS-50-3.3 Power Supply 50W 3.3V

Q: What loads is the LRS-50-3.3 suitable for at 3.3V?

The LRS-50-3.3 supplies 3.3V at 10A (33W), the standard core logic voltage for FPGAs, microcontrollers, and DDR memory modules. It suits embedded development boards, custom PCBs requiring a 3.3V rail, and low-power logic subsystems within larger equipment.

Q: How does the LRS-50-3.3 output power compare to other LRS-50 models?

The LRS-50-3.3 delivers 33W — the lowest wattage in the LRS-50 family due to the low voltage. By comparison: LRS-50-5 (50W), LRS-50-12 (50.4W), LRS-50-15 (51W), LRS-50-24 (52.8W), LRS-50-36 (52.2W), LRS-50-48 (52.8W). All share the same 99 × 82 × 30 mm case and 0.21 kg weight.

Q: Can the LRS-50-3.3 be used in cold environments?

The LRS-50-3.3 is rated for -30°C to +70°C operation. This low-end cold rating allows deployment in unheated industrial spaces, cold-storage control panels, or outdoor enclosures in temperate climates where temperatures drop near or below freezing.

Q: Is the LRS-50-3.3 appropriate as a standalone board-level power supply for custom electronics?

Yes. At 3.3V and 10A (33W), the LRS-50-3.3 can serve as a primary or auxiliary power supply for custom PCBs requiring a regulated 3.3V rail. Its compact 99 × 82 × 30 mm footprint and 0.21 kg weight allow tight integration inside enclosures.

most economical model, ultra compact and 1U low profile, withstand 5G vibration and 70°C operation

SKU:

LRS-50-3.3

Model

50W 3.3V

SKU: LRS-50-3.3

100W 3.3V

SKU: LRS-100-3.3

200W 3.3V

SKU: LRS-200-3.3

350W 3.3V

SKU: LRS-350-3.3

Product variants

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Description

No load power consumption <0.2W for 35W/50W; <0.3W for 75W/100WUniversal AC input / Full rangeWithstand 300VAC surge input for 5 secondsUltra compact and 1U low profileWithstand 5G vibration testHigh operating temperature up to 70oCProtections: Short circuit / Overload / Over voltageCooling by free air convectionCompliance to IEC/EN60335-1(PD3) and IEC/EN61558-1,-2-16 for household appliancesOperating altitude up to 5000 metersHigh efficiency, long life and high reliabilityLED indicator for power onLow cost3 years warranty

Key Features

✓85~264VAC; 120~370VDC
✓Cold start, 45A at 230VAC
✓±10% by potentiometer
✓110%~150%
✓Type Hiccup mode, auto-recovery
✓115%~135% rated output voltage
✓Shut down o/p voltage, re-power on to recover
✓3.75kVAC, I/P-FG: 2kVAC, O/P-FG: 1.25kVAC, 1 minute
✓-30~+70°C (refer to output derating curve)
✓UL60950-1, IEC/EN60950-1, IEC/EN61558-1, EN61558-2-16, IEC/EN60335-1, CCC GB4943 approved
✓EN55022 class B, EN55014, EN61000-3-2, 3, EN61000-4,2,3,4,5,6,8,11, GB9254
✓5P/9.5mm pitch terminal block
✓99x 82x 30

Specifications

Brand

Mean Well
Series

LRS Series
Power Rating

33 Watt
Output Voltage

3.3 Volt
Rated Current

10 Ampere
Input Voltage

85V~264V
Standards Met

BSMI,CB,CCC,CE,EAC,RCM,TUV,UL
Operation Mode

Constant Voltage
Operating Temperature

-30°C~70°C
Warranty

3 Year
Length

9.9 cm
Width

8.2 cm
Height

3 cm
Weight

0.21 kg

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Frequently Asked Questions

What loads is the LRS-50-3.3 suitable for at 3.3V?

The LRS-50-3.3 supplies 3.3V at 10A (33W), the standard core logic voltage for FPGAs, microcontrollers, and DDR memory modules. It suits embedded development boards, custom PCBs requiring a 3.3V rail, and low-power logic subsystems within larger equipment.

How does the LRS-50-3.3 output power compare to other LRS-50 models?

The LRS-50-3.3 delivers 33W — the lowest wattage in the LRS-50 family due to the low voltage. By comparison: LRS-50-5 (50W), LRS-50-12 (50.4W), LRS-50-15 (51W), LRS-50-24 (52.8W), LRS-50-36 (52.2W), LRS-50-48 (52.8W). All share the same 99 × 82 × 30 mm case and 0.21 kg weight.

Can the LRS-50-3.3 be used in cold environments?

The LRS-50-3.3 is rated for -30°C to +70°C operation. This low-end cold rating allows deployment in unheated industrial spaces, cold-storage control panels, or outdoor enclosures in temperate climates where temperatures drop near or below freezing.

Is the LRS-50-3.3 appropriate as a standalone board-level power supply for custom electronics?

Yes. At 3.3V and 10A (33W), the LRS-50-3.3 can serve as a primary or auxiliary power supply for custom PCBs requiring a regulated 3.3V rail. Its compact 99 × 82 × 30 mm footprint and 0.21 kg weight allow tight integration inside enclosures.

Model	Power	Voltage	Current
Mean Well LRS-50-5 Power Supply 50W 5V	50W	5V	10A	View
Mean Well LRS-50-12 Power Supply 50W 12V	50.4W	12V	4.2A	View
Mean Well LRS-50-48 Power Supply 50W 48V	52.8W	48V	1.1A	View

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Key Features

✓85~264VAC; 120~370VDC

✓Cold start, 45A at 230VAC

✓±10% by potentiometer

✓110%~150%

✓Type Hiccup mode, auto-recovery

✓115%~135% rated output voltage

✓Shut down o/p voltage, re-power on to recover

✓3.75kVAC, I/P-FG: 2kVAC, O/P-FG: 1.25kVAC, 1 minute

✓-30~+70°C (refer to output derating curve)

✓UL60950-1, IEC/EN60950-1, IEC/EN61558-1, EN61558-2-16, IEC/EN60335-1, CCC GB4943 approved

✓EN55022 class B, EN55014, EN61000-3-2, 3, EN61000-4,2,3,4,5,6,8,11, GB9254

✓5P/9.5mm pitch terminal block

✓99x 82x 30

Mean Well LRS-50-3.3 Power Supply 50W 3.3V

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Key Features

Specifications

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Frequently Asked Questions

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Mean Well LRS-50-3.3 Power Supply 50W 3.3V

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